1
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Xu DX, Zhao YM, Chen HX, Lu ZY, Tian YF, Xin S, Li G, Guo YG. Reduced Volume Expansion of Micron-Sized SiO x via Closed-Nanopore Structure Constructed by Mg-Induced Elemental Segregation. Angew Chem Int Ed Engl 2024:e202401973. [PMID: 38520059 DOI: 10.1002/anie.202401973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/04/2024] [Accepted: 03/22/2024] [Indexed: 03/25/2024]
Abstract
The inherently huge volume expansion during Li uptake has hindered the use of Si-based anodes in high-energy lithium-ion batteries. While some pore-forming and nano-architecting strategies show promises to effectively buffer the volume change, other parameters essential for practical electrode fabrication, such as compaction density, are often compromised. Here we propose a new in situ Mg doping strategy to form closed-nanopore structure into a micron-sized SiOx particle at a high bulk density. The doped Mg atoms promote the segregation of O, so that high-density magnesium silicates form to generate closed nanopores. By altering the mass content of Mg dopant, the average radii (ranged from 5.4 to 9.7 nm) and porosities (ranged from 1.4 % to 15.9 %) of the closed pores are precisely adjustable, which accounts for volume expansion of SiOx from 77.8 % to 22.2 % at the minimum. Benefited from the small volume variation, the Mg-doped micron-SiOx anode demonstrates improved Li storage performance towards realization of a 700-(dis)charge-cycle, 11-Ah-pouch-type cell at a capacity retention of >80 %. This work offers insights into reasonable design of the internal structure of micron-sized SiOx and other materials that undergo conversion or alloying reactions with drastic volume change, to enable high-energy batteries with stable electrochemistry.
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Affiliation(s)
- Di-Xin Xu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Yu-Ming Zhao
- Beijing iAmetal New Energy Technology Co., Ltd, Beijing, 100081, P. R. China
| | - Han-Xian Chen
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Zhuo-Ya Lu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Yi-Fan Tian
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Sen Xin
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Ge Li
- Beijing iAmetal New Energy Technology Co., Ltd, Beijing, 100081, P. R. China
| | - Yu-Guo Guo
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
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2
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Fang XX, Jiang C, Yue C, Hu F. Three-Dimensional Self-Supported Ge Anode for Advanced Lithium-Ion Batteries. Chemistry 2024:e202400063. [PMID: 38436136 DOI: 10.1002/chem.202400063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/03/2024] [Accepted: 03/03/2024] [Indexed: 03/05/2024]
Abstract
Three-dimensional (3D) self-supported Ge anode is one of the promising candidates to replace the traditional graphite anode material for high-performance binder-free lithium-ion batteries (LIBs). The enlarged surface area and the shortened ions/electrons transporting distance of the 3D electrode would greatly facilitate the rapid transfer of abundant lithium ions during cycling, thus achieve enhanced energy and power density during cycling. Cycle stability of the 3D self-supported Ge electrode would be improved due to the obtained enough space could effectively accommodate the large volume expansion of the Ge anode. In this review, we first describe the electrochemical properties and Li ions storage mechanism of Ge anode. Moreover, the recent advances in the 3D self-supported Ge anode architectures design are majorly illustrated and discussed. Challenges and prospects of the 3D self-supported Ge electrode are finally provided, which shed light on ways to design more reliable 3D Ge-based electrodes in energy storage systems.
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Affiliation(s)
- Xiang Xiang Fang
- Department of Microelectronics Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Chaoyan Jiang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China
| | - Chuang Yue
- Department of Microelectronics Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Fang Hu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi An Shi, Xian, 710054, PR China
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3
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Wang L, Li Q, Chen Z, Wang Y, Li Y, Chai J, Han N, Tang B, Rui Y, Jiang L. Metal Phosphide Anodes in Sodium-Ion Batteries: Latest Applications and Progress. Small 2024:e2310426. [PMID: 38229551 DOI: 10.1002/smll.202310426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/06/2024] [Indexed: 01/18/2024]
Abstract
Sodium-ion batteries (SIBs), as the next-generation high-performance electrochemical energy storage devices, have attracted widespread attention due to their cost-effectiveness and wide geographical distribution of sodium. As a crucial component of the structure of SIBs, the anode material plays a crucial role in determining its electrochemical performance. Significantly, metal phosphide exhibits remarkable application prospects as an anode material for SIBs because of its low redox potential and high theoretical capacity. However, due to volume expansion limitations and other factors, the rate and cycling performance of metal phosphides have gradually declined. To address these challenges, various viable solutions have been explored. In this paper, the recent research progress of metal phosphide materials for SIBs is systematically reviewed, including the synthesis strategy of metal phosphide, the storage mechanism of sodium ions, and the application of metal phosphide in electrochemical aspects. In addition, future challenges and opportunities based on current developments are presented.
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Affiliation(s)
- Longzhen Wang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Qingmeng Li
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Zhiyuan Chen
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Yiting Wang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Yifei Li
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Jiali Chai
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Ning Han
- Department of Materials Engineering, KU Leuven, Leuven, 3001, Belgium
| | - Bohejin Tang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Yichuan Rui
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Lei Jiang
- Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, Heverlee, B-3001, Belgium
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4
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Kim C, Hwang U, Lee S, Han YK. First-Principles Dynamics Investigation of Germanium as an Anode Material in Multivalent-Ion Batteries. Nanomaterials (Basel) 2023; 13:2868. [PMID: 37947713 PMCID: PMC10650491 DOI: 10.3390/nano13212868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/27/2023] [Accepted: 10/28/2023] [Indexed: 11/12/2023]
Abstract
Germanium, a promising electrode material for high-capacity lithium ion batteries (LIBs) anodes, attracted much attention because of its large capacity and remarkably fast charge/discharge kinetics. Multivalent-ion batteries are of interest as potential alternatives to LIBs because they have a higher energy density and are less prone to safety hazards. In this study, we probed the potential of amorphous Ge anodes for use in multivalent-ion batteries. Although alloying Al and Zn in Ge anodes is thermodynamically unstable, Mg and Ca alloys with Ge form stable compounds, Mg2.3Ge and Ca2.4Ge that exhibit higher capacities than those obtained by alloying Li, Na, or K with Ge, corresponding to 1697 and 1771 mA·h·g-1, respectively. Despite having a slightly lower capacity than Ca-Ge, Mg-Ge shows an approximately 150% smaller volume expansion ratio (231% vs. 389%) and three orders of magnitude higher ion diffusivity (3.0 × 10-8 vs. 1.1 × 10-11 cm2 s-1) than Ca-Ge. Furthermore, ion diffusion in Mg-Ge occurs at a rate comparable to that of monovalent ions, such as Li+, Na+, and K+. The outstanding performance of the Mg-Ge system may originate from the coordination number of the Ge host atoms and the smaller atomic size of Mg. Therefore, Ge anodes could be applied in multivalent-ion batteries using Mg2+ as the carrier ion because its properties can compete with or surpass monovalent ions. Here, we report that the maximum capacity, volume expansion ratio, and ion diffusivities of the alloying electrode materials can be understood using atomic-scale structural properties, such as the host-host and host-ion coordination numbers, as valuable indicators.
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Affiliation(s)
| | | | - Sangjin Lee
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (C.K.); (U.H.)
| | - Young-Kyu Han
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (C.K.); (U.H.)
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Rehman WU, Farooq U, Yousaf MZ, Altalbe A. Bismuth-Nanoparticles-Embedded Porous Carbon Derived from Seed Husks as High-Performance for Anode Energy Electrode. Materials (Basel) 2023; 16:6628. [PMID: 37895610 PMCID: PMC10608430 DOI: 10.3390/ma16206628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/08/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023]
Abstract
In energy application technology, the anode part of the electrode is typically composed of carbon-coated materials that exhibit excellent electrochemical performance. The carbon-coated electrodes facilitate electrochemical reactions involving the fuel and the oxidant. Energy electrodes are used in stationary power plants to generate electricity for the grid. These large-scale installations are known as distributed generation systems and contribute to grid stability and reliability. Understanding the practical applications of energy materials remains a significant hurdle in the way of commercialization. An anode electrode has one key limitation, specifically with alloy-type candidates, as they tend to exhibit rapid capacity degradation during cycling due to volume expansion. Herein, biomass-derived carbon from sunflowers (seeds husks) via pyrolysis and then bismuth nanoparticles are treated with carbon via a simple wet-chemical method. The electrode Bi@C offers several structural advantages, such as high capacity, good cycling stability, and exceptional capability at the current rate of 500 mA g-1, delivering a capacity of 731.8 mAh g-1 for 200 cycles. The biomass-derived carbon coating protects the bismuth nanoparticles and contributes to enhanced electronic conductivity. Additionally, we anticipate the use of low-cost biomass with hybrid composition has the potential to foster environment-friendly practices in the development of next-generation advanced fuel cell technology.
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Affiliation(s)
- Wasif ur Rehman
- Hubei Key Laboratory of Energy Storage and Power Battery, School of Mathematics, Physics and Opto-Electronic Engineering, Hubei University of Automotive Technology, Shiyan 442002, China;
| | - Umar Farooq
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321017, China
| | - Muhammad Zain Yousaf
- School of Electrical and Information Engineering, Hubei University of Automotive Technology, Shiyan 442002, China;
| | - Ali Altalbe
- Department of Computer Science, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
- Faculty of Computing and Information Technology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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6
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Baek K, Lee WG, Im E, Ha JH, Ahn S, Kim Y, Choi Y, Kang SJ. Gradient Lithium Metal Infusion in Ag-Decorated Carbon Fibers for High-Capacity Lithium Metal Battery Anodes. Nano Lett 2023; 23:8515-8523. [PMID: 37669534 DOI: 10.1021/acs.nanolett.3c02229] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Lithium (Li) metal is a promising anode material for high-energy-density Li batteries due to its high specific capacity. However, the uneven deposition of Li metal causes significant volume expansion and safety concerns. Here, we investigate the impact of a gradient-infused Li-metal anode using silver (Ag)-decorated carbonized cellulose fibers (Ag@CC) as a three-dimensional (3D) current collector. The loading level of the gradient-infused Li-metal anode is controlled by the thermal infusion time of molten Li. In particular, a 5 s infusion time in the Ag@CC current collector creates an appropriate space with a lithiophilic surface, resulting in improved cycling stability and a reduced volume expansion rate. Moreover, integrating a 5 s Ag@CC anode with a high-capacity cathode demonstrates superior electrochemical performance with minimal volume expansion. This suggests that a gradient-infused Li-metal anode using Ag@CC as a 3D current collector represents a novel design strategy for Li-metal-based high-capacity Li-ion batteries.
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Affiliation(s)
- Kyungeun Baek
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Wang-Geun Lee
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Eunmi Im
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Institute of Energy and Climate Research-Fundamental Electrochemistry (IEK-9), Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
| | - Jee Ho Ha
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Seokhoon Ahn
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Jeonbuk 55324, Republic of Korea
| | - Youngsik Kim
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yeonsik Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Seok Ju Kang
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
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7
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Xu D, Zhou N, Wang A, Xu Y, Liu X, Tang S, Luo J. Mechano-Electrochemically Promoting Lithium Atom Diffusion and Relieving Accumulative Stress for Deep-Cycling Lithium Metal Anodes. Adv Mater 2023; 35:e2302872. [PMID: 37204426 DOI: 10.1002/adma.202302872] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/16/2023] [Indexed: 05/20/2023]
Abstract
Lithium metal batteries (LMBs) can double the energy density of lithium-ion batteries. However, the notorious lithium dendrite growth and large volume change are not well addressed, especially under deep cycling. Here, an in-situ mechanical-electrochemical coupling system is built, and it is found that tensile stress can induce smooth lithium deposition. Density functional theory (DFT) calculation and finite element method (FEM) simulation confirm that the lithium atom diffusion energy barrier can be reduced when the lithium foils are under tensile strain. Then tensile stress is incorporated into lithium metal anodes by designing an adhesive copolymer layer attached to lithium in which the copolymer thinning can yield tensile stress to the lithium foil. Elastic lithium metal anode (ELMA) is further prepared via introducing a 3D elastic conductive polyurethane (CPU) host for the copolymer-lithium bilayer to release accumulated internal stresses and resist volume variation. The ELMA can withstand hundreds of compression-release cycles under 10% strain. LMBs paired with ELMA and LiNi0.8 Co0.1 Mn0.1 O2 (NCM811) cathode can operate beyond 250 cycles with 80% capacity retention under practical condition of 4 mAh cm-2 cathode capacity, 2.86 g Ah-1 electrolyte-to-capacity ratio (E/C) and 1.8 negative-to-cathode capacity ratio (N/P), five times of the lifetime using lithium foils.
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Affiliation(s)
- Dehua Xu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Nian Zhou
- Guizhou Colleges and Universities Process Industry New Process Engineering Research Center, School of Materials and Energy Engineering, Guizhou Institute of Technology, Guiyang, 550000, China
| | - Aoxuan Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Yang Xu
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Xingjiang Liu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Shan Tang
- State Key Laboratory of Structural Analysis for Industrial Equipment Department of Mechanics, Dalian University of Technology, Dalian, 116024, China
| | - Jiayan Luo
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
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8
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Arima H, Hiraide S, Miyahara MT, Watanabe S. Validating the Mechanism Underlying the Slacking of the Gate-Opening Behavior in Flexible Metal-Organic Frameworks Arising from the Application of External Force. ACS Appl Mater Interfaces 2023. [PMID: 37477944 DOI: 10.1021/acsami.3c05923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Flexible metal-organic frameworks (MOFs) are innovative adsorbents expected to revolutionize conventional separation systems as they exhibit stepwise adsorption arising from structural transitions, commonly known as "gate opening." However, because MOFs are typically obtained in powder form, they require shaping for industrial applications. In our previous study, we reported that the stepwise uptake observed in the CO2 gate opening of ELM-11 ([Cu(BF4)2(4,4'-bipyridine)2]) became less distinct when molded with polymer binders and found that this slacking phenomenon could be caused by the polymer binder inhibiting the structural change of the ELM-11 particles. In this study, we aimed to fully validate and generalize the mechanism behind the slacking of gate adsorption from both theoretical and experimental perspectives. First, we conducted grand canonical molecular dynamics simulations for a simplified MOF model to directly calculate free energy profiles of the particle to validate the slacking theory without any assumptions. The results confirmed the fundamental assumption made in our previous study that the deformation of the flexible motifs within the MOF particles occurs sequentially, which is a key factor contributing to the slacking phenomenon. The second part of the study focused on the relationship between the volume expansion ratio of MOFs and the degree of slacking. The relationship predicted by the theory was experimentally validated by comparing ELM-11, which exhibits 30% volume expansion, to another MOF with a mutually interpenetrating jungle-gym structure, which exhibits 10% volume expansion. These findings strengthened and generalized the understanding of the mechanism underlying the slacking of gate adsorption induced upon the application of external force, which could guide the fabrication of molded MOFs while maintaining a high adsorption efficiency for various industrial applications.
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Affiliation(s)
- Homare Arima
- Department of Chemical Engineering, Kyoto University, Nishikyo, 615-8510 Kyoto, Japan
| | - Shotaro Hiraide
- Department of Chemical Engineering, Kyoto University, Nishikyo, 615-8510 Kyoto, Japan
| | - Minoru T Miyahara
- Department of Chemical Engineering, Kyoto University, Nishikyo, 615-8510 Kyoto, Japan
| | - Satoshi Watanabe
- Department of Chemical Engineering, Kyoto University, Nishikyo, 615-8510 Kyoto, Japan
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Cui M, Huang H, Zhang L, Yan J. Nanosecond Laser "Pulling" Patterning of Micro-Nano Structures on Zr-Based Metallic Glass. Small 2023; 19:e2206516. [PMID: 36604969 DOI: 10.1002/smll.202206516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Flexible and controllable fabrication of micro-nano structures on metallic glasses (MGs) endow them with more functional applications, but it is still challenging due to the unique mechanical, physical, and chemical properties of MGs. In this study, inspired by a new physical phenomenon observed in the nanosecond laser-MG interaction (i.e., the surface structure is transformed from the normally observed microgroove into the micro-nano bulge at a critical peak laser power intensity), a nanosecond laser "pulling" method is proposed to pattern the MG surface. The formation mechanism and evolution of the micro-nano bulge are investigated in detail, and accordingly, various micro-nano structures including the unidirectional stripe, pillar, cross-hatch patterns, "JLU", circle, triangle, and square, are derived and created on the MG surface, which affects the surface optical diffraction. Overall, this study provides a highly flexible and controllable method to fabricate micro-nano structures on MGs.
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Affiliation(s)
- Mingming Cui
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, Changchun, Jilin, 130022, China
| | - Hu Huang
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, Changchun, Jilin, 130022, China
| | - Lin Zhang
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, Yokohama, 223-8522, Japan
| | - Jiwang Yan
- Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, Yokohama, 223-8522, Japan
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10
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Wei Y, Yao R, Liu X, Chen W, Qian J, Yin Y, Li D, Chen Y. Understanding the Configurational Entropy Evolution in Metal-Phosphorus Solid Solution for Highly Reversible Li-Ion Batteries. Adv Sci (Weinh) 2023; 10:e2300271. [PMID: 36793114 PMCID: PMC10037993 DOI: 10.1002/advs.202300271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Indexed: 06/18/2023]
Abstract
The high-entropy materials (HEM) have attracted increasing attention in catalysis and energy storage due to their large configurational entropy and multiunique properties. However, it is failed in alloying-type anode due to their Li-inactive transition-metal compositions. Herein, inspired by high-entropy concept, the Li-active elements instead of transition-metal ones are introduced for metal-phosphorus synthesis. Interestingly, a new Znx Gey Cuz Siw P2 solid solution is successfully synthesized as proof of concept, which is first verified to cubic system in F-43m. More specially, such Znx Gey Cuz Siw P2 possesses wide-range tunable region from 9911 to 4466, in which the Zn0.5 Ge0.5 Cu0.5 Si0.5 P2 accounts for the highest configurational entropy. When served as anode, Znx Gey Cuz Siw P2 delivers large capacity (>1500 mAh g-1 ) and suitable plateau (≈0.5 V) for energy storage, breaking the conventional view that HEM is helpless for alloying anode due to its transition-metal compositions. Among them, the Zn0.5 Ge0.5 Cu0.5 Si0.5 P2 exhibits the highest initial coulombic efficiency (ICE) (93%), Li-diffusivity (1.11 × 10-10 ), lowest volume-expansion (34.5%), and best rate performances (551 mAh g-1 at 6400 mA g-1 ) owing to its largest configurational entropy. Possible mechanism reveals the high entropy stabilization enables good accommodation of volume change and fast electronic transportation, thus supporting superior cyclability and rate performances. This large configurational entropy strategy in metal-phosphorus solid solution may open new avenues to develop other high-entropy materials for advanced energy storage.
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Affiliation(s)
- Yaqing Wei
- State Key Laboratory of Marine Resource Utilization in South China SeaHainan Provincial Key Laboratory of Research on Utilization of Si‐Zr‐Ti ResourcesSchool of Materials Science and EngineeringHainan University58 Renmin RoadHaikouHainan570228P. R. China
| | - Runzhe Yao
- State Key Laboratory of Marine Resource Utilization in South China SeaHainan Provincial Key Laboratory of Research on Utilization of Si‐Zr‐Ti ResourcesSchool of Materials Science and EngineeringHainan University58 Renmin RoadHaikouHainan570228P. R. China
| | - Xuhao Liu
- State Key Laboratory of Marine Resource Utilization in South China SeaHainan Provincial Key Laboratory of Research on Utilization of Si‐Zr‐Ti ResourcesSchool of Materials Science and EngineeringHainan University58 Renmin RoadHaikouHainan570228P. R. China
| | - Wen Chen
- State Key Laboratory of Marine Resource Utilization in South China SeaHainan Provincial Key Laboratory of Research on Utilization of Si‐Zr‐Ti ResourcesSchool of Materials Science and EngineeringHainan University58 Renmin RoadHaikouHainan570228P. R. China
| | - Jiayao Qian
- State Key Laboratory of Marine Resource Utilization in South China SeaHainan Provincial Key Laboratory of Research on Utilization of Si‐Zr‐Ti ResourcesSchool of Materials Science and EngineeringHainan University58 Renmin RoadHaikouHainan570228P. R. China
| | - Yiyi Yin
- State Key Laboratory of Marine Resource Utilization in South China SeaHainan Provincial Key Laboratory of Research on Utilization of Si‐Zr‐Ti ResourcesSchool of Materials Science and EngineeringHainan University58 Renmin RoadHaikouHainan570228P. R. China
| | - De Li
- State Key Laboratory of Marine Resource Utilization in South China SeaHainan Provincial Key Laboratory of Research on Utilization of Si‐Zr‐Ti ResourcesSchool of Materials Science and EngineeringHainan University58 Renmin RoadHaikouHainan570228P. R. China
| | - Yong Chen
- Guangdong Key Laboratory for Hydrogen Energy TechnologiesSchool of Materials Science and Hydrogen EnergyFoshan UniversityFoshan528000P. R. China
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11
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Kim J, Kim SW, Kweon BC, Kim KH, Cha SW. Solid-State Surface Patterning on Polymer Using the Microcellular Foaming Process. Polymers (Basel) 2023; 15:polym15051153. [PMID: 36904394 PMCID: PMC10007601 DOI: 10.3390/polym15051153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/20/2023] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
This study proposes a novel process that integrates the molding and patterning of solid-state polymers with the force generated from the volume expansion of the microcellular-foaming process (MCP) and the softening of solid-state polymers due to gas adsorption. The batch-foaming process, which is one of the MCPs, is a useful process that can cause thermal, acoustic, and electrical characteristic changes in polymer materials. However, its development is limited due to low productivity. A pattern was imprinted on the surface using a polymer gas mixture with a 3D-printed polymer mold. The process was controlled with changing weight gain by controlling saturation time. A scanning electron microscope (SEM) and confocal laser scanning microscopy were used to obtain the results. The maximum depth could be formed in the same manner as the mold geometry (sample depth: 208.7 μm; mold depth: 200 μm). Furthermore, the same pattern could be imprinted as a layer thickness of 3D printing (sample pattern gap and mold layer gap: 0.4 mm), and surface roughness was increased according to increase in the foaming ratio. This process can be used as a novel method to expand the limited applications of the batch-foaming process considering that MCPs can impart various high-value-added characteristics to polymers.
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Sun Z, Li S, Li H, Liu M, Li Z, Liu X, Liu M, Liu Q, Huang Z. Corrosion Behavior of Cobalt Oxide and Lithium Carbonate on Mullite-Cordierite Saggar Used for Lithium Battery Cathode Material Sintering. Materials (Basel) 2023; 16:653. [PMID: 36676390 PMCID: PMC9865777 DOI: 10.3390/ma16020653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/25/2022] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Mullite-cordierite ceramic saggar is a necessary consumable material used in the synthesis process of LiCoO2 that is easily eroded during application. In our study, we systematically investigated the characteristics and surface corrosion behavior of waste saggar samples. We divided the cross sections of waste saggar into the attached layer, hardened layer, permeability layer, and matrix layer. Then, we examined the high-temperature solid-state reactions between saggar powder and lithium carbonate or cobalt oxide to identify erosion reactants correlating with an increase in the number of recycled saggars. The results of time-of-flight secondary ion mass spectrometric analysis (TOF-SIMS) prove that the maximum erosion penetration of lithium can reach 2 mm. However, our morphology and elemental distribution analysis results show that the erosion penetration of cobalt was only 200 μm. When enough lithium carbonate reacted, lithium aluminate and lithium silicate were the main phases. Our X-ray computed tomography (X-ray CT) analysis results show that the change in phase volume before and after the reaction, including the generation of oxygen and carbon dioxide gas, led to the internal crack expansion of the material-saggar interface. Our results can contribute to improving saggar and upgrading waste saggar utilization technology.
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Affiliation(s)
- Zhenhua Sun
- School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- CAS Key Laboratory of Green Process and Engineering, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Shaopeng Li
- CAS Key Laboratory of Green Process and Engineering, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Huiquan Li
- CAS Key Laboratory of Green Process and Engineering, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100149, China
| | - Mingkun Liu
- CAS Key Laboratory of Green Process and Engineering, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhanbing Li
- School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- CAS Key Laboratory of Green Process and Engineering, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Xianjie Liu
- School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
| | - Mingyong Liu
- School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
| | - Qiyun Liu
- School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
| | - Zhaohui Huang
- School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
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Garud SR, Lamdande AG, Tavanandi HA, Mohite NK, Nidoni U. Effect of physicochemical properties on popping characteristics of selected pearl millet varieties. J Sci Food Agric 2022; 102:7370-7378. [PMID: 35790006 DOI: 10.1002/jsfa.12104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 06/08/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Pearl millet, commonly known as 'Bajra', is a nutrigrain, mostly used in pulverized form to make unleavened pancakes, dumplings, porridge, etc., in India. Popping, a traditional method of millet processing, is used in making ready-to-eat snacks. Pearl millet is underutilized in India. The present work aims to study the effect of the parameters of pearl millet such as variety, chemical composition, pericarp thickness, amylose content, and processing temperature on the volume expansion ratio and sensory properties of popped pearl millet. METHODOLOGY A conventional salt-popping technique was used at three different temperatures (220 °C, 240 °C, and 260 °C) for five pearl millet varieties (ABPC 4-3, AHB 1269, AHB 1666, AIMP 92901, and PPC-6). Parameters such as color, diameter, density, amylose content, pericarp thickness, and proximate composition were analyzed. Popping characteristics such as volume expansion ratio, popping yield, and sensory properties of popped grains were studied. RESULTS It was observed that pericarp thickness and amylose content were positively correlated with the popping qualities of grains. AIMP 92901 offered more desirable properties such as suitable moisture content (87.5 g kg-1 ), lowest equivalent diameter (2.07 mm), highest bulk density (0.84 g cm-3 ), true density (1.41 g cm-3 ), pericarp thickness (30.82 μm), and amylose content (19.75 g kg-1 ) than the other varieties that were studied. Hence, the highest popping yield (72.83%) and expansion ratio (6.15) was observed in the AIMP 92901 pearl millet variety at 260 °C. CONCLUSION Conventional salt popping at 260 °C yielded the best popping characteristics. Pearl millet variety AIMP-92 901 developed by VNMKV (Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani), Parbhani was found to have more desirable popping characteristics (in terms of all the parameters explained in results). © 2022 Society of Chemical Industry.
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Affiliation(s)
- Shyam Ramkrishna Garud
- Department of Agricultural Process Engineering, College of Agricultural Engineering & Technology, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, India
| | - Archana Gopalrao Lamdande
- Department of Food Processing & Technology, College of Community Science, University of Agricultural Sciences, Dharwad, India
| | - Hrishikesh A Tavanandi
- Department of Food Engineering, CSIR-Central Food Technological Research Institute (CFTRI), Mysore, India
| | - Nilesh Kailas Mohite
- Department of Agricultural Process Engineering, College of Agricultural Engineering & Technology, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, India
| | - Udaikumar Nidoni
- Department of Processing & Food Engineering, College of Agricultural Engineering, University of Agricultural Sciences, Raichur, India
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Miller WL, Fudim M, Mullan BP. Blood volume and chronic kidney disease in heart failure - Can volume expansion help balance the Cardio-Renal Axis for better clinical outcomes? Physiol Rep 2022; 10:e15526. [PMID: 36461656 PMCID: PMC9718939 DOI: 10.14814/phy2.15526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/07/2022] [Accepted: 11/13/2022] [Indexed: 06/17/2023] Open
Abstract
Intravascular volume is largely regulated by the kidneys but how differences in intravascular volume profiles interact with chronic kidney disease (CKD) to influence outcomes in chronic heart failure (HF) has not been explored. Our hypothesis was that a greater degree of volume expansion (VE) would moderate the impact of CKD on HF-related clinical outcomes. Quantitative blood volume (BV) data were available in 137 patients at the time of hospital discharge using a nuclear medicine radiolabeled albumin indicator-dilution technique. The study patients were stratified by the cohort median glomerular filtration rate (GFR, 44 ml/min/1.73 m2 ). An a priori cut-point of ≥+25% above normal BV was then used to further stratify the two GFR subgroups and prospectively analyzed for 1-year HF-related mortality or 1st re-hospitalization. Persistent BV expansions ≥+25% were present in 51% of the cohort. In the subgroup with GFR above the median (N = 68) greater or lesser BV expansion from +25% did not differentiate outcomes. However, in the subgroup with GFR below the median (N = 69), BV expansion-stratified risk (log-rank p = 0.022) with <+25% VE associated with poorer outcomes, while VE ≥ + 25% was associated with lower risk and comparable to GFR above the median. In patients with chronic HF, significant intravascular VE and CKD are common co-existing conditions. The presence of larger VE, however, appears to be a factor mitigating the impact of declining renal function on clinical outcomes, and as an element of volume pathophysiology warrants further study.
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Affiliation(s)
- Wayne L. Miller
- Department of Cardiovascular MedicineMayo ClinicRochesterMinnesotaUSA
| | - Marat Fudim
- Division of CardiologyDuke University Medical CenterDurhamNorth CarolinaUSA
| | - Brian P. Mullan
- Division of Diagnostic Radiology and Nuclear MedicineMayo ClinicRochesterMinnesotaUSA
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Huang Y, Yang X, Wang S, Liu Z, Liu L, Xu B. Evaluating Cement Treated Aggregate Base Containing Steel Slag: Mechanical Properties, Volume Stability and Environmental Impacts. Materials (Basel) 2022; 15:8277. [PMID: 36499774 PMCID: PMC9741465 DOI: 10.3390/ma15238277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/10/2022] [Accepted: 11/08/2022] [Indexed: 06/17/2023]
Abstract
Steel slag has been commonly used in road engineering as cementitious material; however, its application in base course is not widely reported. Four contents of steel slag (0%, 30%, 50%, 75% by volume) were blended into different cement (3%, 4%, 5%, 6% by weight)-treated aggregates. Mechanical properties, volume stability, economic benefits and environmental influences of steel slag mixtures were investigated for the feasibility of applying steel slag in semi-rigid base course. Abrasion, crushing and elongated particle content were compared against limestone aggregate, showing that steel slag has the potential of replacing natural aggregate in concrete. Steel slag is beneficial for reinforcement of the strength and stiffness. The mixture has the highest strength and stiffness when bended with 50% steel slag at 4% cement content. By treating steel slag with CH3COOH or adding silica fume, volume expansion of steel slag can effectively be controlled. Larger size steel slag (>4.75 mm) and higher cement content are recommended due to heavy metal leaching risk, especially in salty humid areas. Steel slag has sound economic benefits due to the relatively low price. Environmental benefits can also be achieved given that the transport CO2eq emission of steel slag is accounted for. With proper control in production process, steel slag is a very promising alternative material to be utilized in cement-stabilized base course in road engineering.
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Affiliation(s)
- You Huang
- Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education, Changsha University of Science & Technology, Changsha 410114, China
- School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Xin Yang
- School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Shuai Wang
- School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Zhaohui Liu
- School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Li Liu
- School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Bo Xu
- Power China Guiyang Engineering Co., Ltd., Guiyang 550000, China
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Yuan F, Hu J, Lei Y, Zhao R, Gao C, Wang H, Li B, Kang F, Zhai D. Key Factor Determining the Cyclic Stability of the Graphite Anode in Potassium-Ion Batteries. ACS Nano 2022; 16:12511-12519. [PMID: 35943345 DOI: 10.1021/acsnano.2c03955] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Graphite is the most commonly used anode material for not only commercialized lithium-ion batteries (LIBs) but also the emerging potassium-ion batteries (PIBs). However, the graphite anode in PIBs using traditional dilute ester-based electrolyte systems shows obvious capacity fading, which is in contrast with the extraordinary cyclic stability in LIBs. More interestingly, the graphite in concentrated electrolytes for PIBs exhibits outstanding cyclic stability. Unfortunately, this significant difference in cycling performance has not raised concern up to now. In this work, by comparing the cyclic stability and graphitization degree of the graphite anode upon cycling, we reveal that the underlying mechanism of the capacity fading of the graphite anode in PIBs is not the larger volume expansion of graphite caused by the intercalation of potassium ions but the continual accumulation of the solid electrolyte interphase (SEI) on the surface of graphite. By X-ray photoelectron and nuclear magnetic resonance spectroscopies combined with chemical synthesis, it is concluded that the accumulation of the SEI may mainly come from the continual deposition of a kind of oligomer component, which blocks intercalation and deintercalation of potassium ions in graphite anodes. The designed SEI-cleaning experiment further verifies the above conclusion. This finding clarifies the crucial factor determining the cyclic stability of graphite and provides scientific guidance for application of the graphite anode for PIBs.
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Affiliation(s)
- Fu Yuan
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Junyang Hu
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Yu Lei
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Rongyi Zhao
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Chongwei Gao
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Huwei Wang
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Baohua Li
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Feiyu Kang
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Dengyun Zhai
- Shenzhen Geim Graphene Center, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
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Zhang X, Weng J, Ye C, Liu M, Wang C, Wu S, Tong Q, Zhu M, Gao F. Strategies for Controlling or Releasing the Influence Due to the Volume Expansion of Silicon inside Si-C Composite Anode for High-Performance Lithium-Ion Batteries. Materials (Basel) 2022; 15:4264. [PMID: 35744323 DOI: 10.3390/ma15124264] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 02/01/2023]
Abstract
Currently, silicon is considered among the foremost promising anode materials, due to its high capacity, abundant reserves, environmental friendliness, and low working potential. However, the huge volume changes in silicon anode materials can pulverize the material particles and result in the shedding of active materials and the continual rupturing of the solid electrolyte interface film, leading to a short cycle life and rapid capacity decay. Therefore, the practical application of silicon anode materials is hindered. However, carbon recombination may remedy this defect. In silicon/carbon composite anode materials, silicon provides ultra-high capacity, and carbon is used as a buffer, to relieve the volume expansion of silicon; thus, increasing the use of silicon-based anode materials. To ensure the future utilization of silicon as an anode material in lithium-ion batteries, this review considers the dampening effect on the volume expansion of silicon particles by the formation of carbon layers, cavities, and chemical bonds. Silicon-carbon composites are classified herein as coated core-shell structure, hollow core-shell structure, porous structure, and embedded structure. The above structures can adequately accommodate the Si volume expansion, buffer the mechanical stress, and ameliorate the interface/surface stability, with the potential for performance enhancement. Finally, a perspective on future studies on Si-C anodes is suggested. In the future, the rational design of high-capacity Si-C anodes for better lithium-ion batteries will narrow the gap between theoretical research and practical applications.
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Wang H, Wei D, He Y, Deng H, Wu B, Yan L, Gang H, Cao Y, Jin L, Zhang L. Carbon Nanoarchitectonics with Bi Nanoparticle Encapsulation for Improved Electrochemical Deionization Performance. ACS Appl Mater Interfaces 2022; 14:13177-13185. [PMID: 35262320 DOI: 10.1021/acsami.1c19665] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Electrochemical deionization (EDI) is hopefully the next generation of water treatment technology. Bismuth (Bi) is a promising anode material for EDI, due to its high capacity and selectivity toward Cl-, but the large volume expansion and severe pulverization aggressively attenuated the EDI cycling performance of Bi electrodes. Herein, carbon-layer-encapsulated nano-Bi composites (Bi@C) were prepared by a simple pyrolysis method using a Bi-based metal-organic framework as a precursor. Bi nanoparticles are uniformly coated within the carbon layer, in which the Bi-O-C bond enhances the interaction between Bi and C. Such a structure effectively relieves the stress caused by volume expansion by the encapsulation effect of the carbon layer. Moreover, the introduction of a carbon skeleton provides a conductive network. As a consequence, the Bi@C composite delivered excellent electrochemical performance with a capacity of 537.6 F g-1 at 1 mV s-1. The Cl- removal capacity was up to 133.5 mg g-1 at 20 mA g-1 in 500 mg L-1 NaCl solution. After 100 cycles, the Bi@C electrode still maintains 71.8% of its initial capacity, which is much higher than the 26.3% of the pure Bi electrode. This study provides a promising strategy for improving EDI electrode materials.
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Affiliation(s)
- Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha 410083, China
| | - Dun Wei
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yingjie He
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haoyu Deng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Bichao Wu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Lvji Yan
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haiyin Gang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yiyun Cao
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Linfeng Jin
- School of Material Science and Engineering, Central South University, Changsha 410083, P. R. China
| | - Liyuan Zhang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
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She Z, Uceda M, Pope MA. Encapsulating a Responsive Hydrogel Core for Void Space Modulation in High-Stability Graphene-Wrapped Silicon Anodes. ACS Appl Mater Interfaces 2022; 14:10363-10372. [PMID: 35175023 DOI: 10.1021/acsami.1c23356] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Due to its formidably high theoretical capacity (3590 mAh/g at room temperature), silicon (Si) is expected to replace graphite as the dominant anode for higher energy density lithium (Li)-ion batteries. However, stability issues stemming from silicon's significant volume expansion (∼300%) upon lithiation have slowed down commercialization. Herein, we report the design of a scalable process to engineer core-shell structures capable of buffering this volume expansion, which utilize a core made up of a poly(ethylene oxide)-carboxymethyl cellulose hydrogel and silicon protected by a crumpled graphene shell. The volume expansion of the hydrogel upon exposure to water creates a void space between the Si-Si and Si-rGO interfaces within the core when the gel dries. Unlike sacrificial spacers, the dehydrated hydrogel remains in the core and acts as an elastic Li-ion conductor, which improves the stability and high rate performance. The optimized composite electrodes retain ∼81.7% of their initial capacity (1055 mAh/(grGO+gel+Si)) after 320 cycles when an active material loading of 1 mg/cm2 is used. At more practical mass loadings (2.5 mg/cm2), the electrodes achieve 2.04 mAh/cm2 and retain 79% of this capacity after 200 cycles against a lithium half-cell. Full cells assembled using a lithium ion phosphate cathode lose only 6.7% of their initial capacity over 100 cycles, demonstrating the potential of this nanocomposite anode for use in next-generation Li-ion batteries.
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Affiliation(s)
- Zimin She
- Quantum-Nano Centre, Department of Chemical Engineering, University of Waterloo, Waterloo N2L 3G1, Canada
| | - Marianna Uceda
- Quantum-Nano Centre, Department of Chemical Engineering, University of Waterloo, Waterloo N2L 3G1, Canada
| | - Michael A Pope
- Quantum-Nano Centre, Department of Chemical Engineering, University of Waterloo, Waterloo N2L 3G1, Canada
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Wu A, Wolley MJ, Wu Q, Cowley D, Palmfeldt J, Welling PA, Fenton RA, Stowasser M. Acute Intravenous NaCl and Volume Expansion Reduces Sodium-Chloride Cotransporter Abundance and Phosphorylation in Urinary Extracellular Vesicles. Kidney360 2022; 3:910-921. [PMID: 36128481 PMCID: PMC9438418 DOI: 10.34067/kid.0000362022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 02/28/2022] [Indexed: 01/12/2023]
Abstract
Background Sodium chloride (NaCl) loading and volume expansion suppress the renin-angiotensin-aldosterone system to reduce renal tubular reabsorption of NaCl and water, but effects on the sodium-chloride cotransporter (NCC) and relevant renal transmembrane proteins that are responsible for this modulation in humans are less well investigated. Methods We used urinary extracellular vesicles (uEVs) as an indirect readout to assess renal transmembrane proteins involved in NaCl and water homeostasis in 44 patients with hypertension who had repeatedly raised aldosterone/renin ratios undergoing infusion of 2 L of 0.9% saline over 4 hours. Results When measured by mass spectrometry in 13 patients, significant decreases were observed in NCC (median fold change [FC]=0.70); pendrin (FC=0.84); AQP2 (FC=0.62); and uEV markers, including ALIX (FC=0.65) and TSG101 (FC=0.66). Immunoblotting reproduced the reduction in NCC (FC=0.54), AQP2 (FC=0.42), ALIX (FC=0.52), and TSG101 (FC=0.55) in the remaining 31 patients, and demonstrated a significant decrease in phosphorylated NCC (pNCC; FC=0.49). However, after correction for ALIX, the reductions in NCC (FC=0.90) and pNCC (FC=1.00) were no longer apparent, whereas the significant decrease in AQP2 persisted (FC=0.62). Conclusion We conclude that (1) decreases in NCC and pNCC, induced by acute NaCl loading and volume expansion, may be due to diluted post-test urines; (2) the lack of change of NCC and pNCC when corrected for ALIX, despite a fall in plasma aldosterone, may be due to the lack of change in plasma K+; and (3) the decrease in AQP2 may be due to a decrease in vasopressin in response to volume expansion.
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Affiliation(s)
- Aihua Wu
- Endocrine Hypertension Research Centre, University of Queensland Diamantina Institute, Greenslopes and Princess Alexandra Hospitals, Brisbane, Australia
| | - Martin J. Wolley
- Endocrine Hypertension Research Centre, University of Queensland Diamantina Institute, Greenslopes and Princess Alexandra Hospitals, Brisbane, Australia,Department of Nephrology, Royal Brisbane and Women’s Hospital, Brisbane, Australia
| | - Qi Wu
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Diane Cowley
- Endocrine Hypertension Research Centre, University of Queensland Diamantina Institute, Greenslopes and Princess Alexandra Hospitals, Brisbane, Australia
| | - Johan Palmfeldt
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Paul A. Welling
- Department of Medicine and Physiology, Johns Hopkins University, Baltimore, Maryland
| | | | - Michael Stowasser
- Endocrine Hypertension Research Centre, University of Queensland Diamantina Institute, Greenslopes and Princess Alexandra Hospitals, Brisbane, Australia
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Okamoto S, Shinozuka T, Endo T. Molecular Design of Isocyanurate Core-Based Acrylates Undergoing Volume Expansion on Radical Photo-Polymerization. Macromol Rapid Commun 2022; 43:e2200014. [PMID: 35142042 DOI: 10.1002/marc.202200014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/02/2022] [Indexed: 11/08/2022]
Abstract
We report the synthesis of acrylates with an isocyanurate substituent that show significant volume expansion on radical photo-polymerization. The acrylate consisting of benzyl bisurethane moieties exhibits the largest volume expansion among them and contributes to restrict volume change upon its radical photo-copolymerization with a diacrylate exhibiting volume shrinkage. Furthermore, it is revealed that the correlation between the volume change behavior and the polymer structure through the radical photo-polymerization of the isocyanurate core-based diacrylate with benzyl bisurethane moieties under various concentration conditions. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Shusuke Okamoto
- Molecular Engineering Institute, Kyushu Institute of Technology, Sensui-cho 1-1, Tobata-ku, Kitakyushu, Fukuoka, 804-8550, Japan
| | - Toyofumi Shinozuka
- Applied Materials Department Information Media Materials Development Laboratory R & D Division, ADEKA Corporation, Higashiogu 7-2-34, Arakawa-ku, Tokyo, 116-8553, Japan
| | - Takeshi Endo
- Molecular Engineering Institute, Kyushu Institute of Technology, Sensui-cho 1-1, Tobata-ku, Kitakyushu, Fukuoka, 804-8550, Japan
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22
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Kim C, Kim H, Sadan MK, Jeon M, Cho G, Ahn J, Kim K, Cho K, Ahn H. Development and Evaluation of Sn Foil Anode for Sodium-Ion Batteries. Small 2021; 17:e2102618. [PMID: 34655151 DOI: 10.1002/smll.202102618] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Metal foil electrodes are simple to prepare and have a high active material loading, making them well suited for the fabrication of inexpensive high-energy-density batteries. Herein, Sn metal foil is used as a binder- and conductive additive-free anode for sodium-ion batteries, achieving a high reversible specific capacity of 692 mAh g-1 and coulombic efficiency of 99% after 100 cycles at a rate of 0.1 C. During the first discharge process, the anode undergoes area expansion. It then splits into multiple parts during the first-charge process. Upon cycling, the separated parts reconnect and form a single piece with a porous and robust coral structure owing to the self-healing nature of the anode. A full cell with a Sn foil anode and Na3 V2 (PO4 )3 cathode shows a stable cycle life of 100 mAh g-1 for 300 cycles. Thus, the cracking or pulverization of the Sn anode is not the principal origin of poor cycling properties. The adopted strategy will promote the development and commercialization of high-capacity metal foil anodes that undergo volume changes during charge/discharge cycling.
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Affiliation(s)
- Changhyeon Kim
- Daejoo Electronic Materials Co., LTD., Seohaean 148, Siheung, Gyeonggi-do, 15094, Republic of Korea
| | - Huihun Kim
- YoulChon Chemical, Doyeongwan, 112 Yeouidaebang-ro, Dongjak-gu, Seoul, 07057, Republic of Korea
| | - Milan K Sadan
- Department of Materials Engineering and Convergence Technology, RIGET, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Minyeong Jeon
- Department of Materials Engineering and Convergence Technology, RIGET, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Gyubong Cho
- Department of Materials Engineering and Convergence Technology, RIGET, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Jouhyeon Ahn
- Department of Materials Engineering and Convergence Technology, RIGET, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Kiwon Kim
- Department of Materials Engineering and Convergence Technology, RIGET, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Kwonkoo Cho
- Department of Materials Engineering and Convergence Technology, RIGET, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Hyojun Ahn
- Department of Materials Engineering and Convergence Technology, RIGET, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
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23
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Tong H, Chen S, Yang P, Wang C, Lu J, Zeng X, Tu J, Wang P, Cheng Z, Chen Q. Cage-Confinement Pyrolysis Strategy to Synthesize Hollow Carbon Nanocage-Coated Copper Phosphide for Stable and High-Capacity Potassium-Ion Storage. ACS Appl Mater Interfaces 2021; 13:52697-52705. [PMID: 34704731 DOI: 10.1021/acsami.1c16641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Metal phosphides with a high theoretical capacity and low redox potential have been proposed as promising anodes for potassium-ion batteries (PIBs). A reasonable configuration design and introduction of a hollow structure with adequate internal void spaces are effective strategies to overcome the volume expansion of metal phosphides in potassium-ion batteries. Herein, we report a cage-confinement pyrolysis strategy to obtain hollow nanocage-structured nitrogen/phosphorus dual-doped carbon-coated copper phosphide (Cu3P/CuP2@NPC), which exhibits a high initial charge capacity (409 mA h g-1 at 100 mA g-1) and an outstanding cycle performance (100 mA h g-1 after 5000 cycles at 1000 mA g-1) as an anode material for PIBs. The novel hollow nanocage structure could prevent volume expansion during cycling and reduce the electron/ion diffusion distance. Besides, the nitrogen/phosphorus dual-doped carbon-coated layer could promote electronic conductivity. In situ X-ray diffraction (XRD) measurements are conducted to study the potassiation/depotassiation mechanism of Cu3P/CuP2@NPC and reveal the structure stability during the cycle process, which further proves that the design ideas of the conductive carbon layer and the hollow structure with adequate internal void spaces are successful.
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Affiliation(s)
- Huigang Tong
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Shi Chen
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Pengpeng Yang
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Changlai Wang
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
- Center of Super-Diamond and Advanced Films (COSDAF), Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong, China
| | - Jian Lu
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xuehao Zeng
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - JinWei Tu
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Pengcheng Wang
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zhiyu Cheng
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Qianwang Chen
- Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
- High Magnetic Field Laboratory of Chinese, Academy of Sciences, Hefei 230031, China
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24
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Ramasubramanian B, Reddy MV, Zaghib K, Armand M, Ramakrishna S. Growth Mechanism of Micro/Nano Metal Dendrites and Cumulative Strategies for Countering Its Impacts in Metal Ion Batteries: A Review. Nanomaterials (Basel) 2021; 11:2476. [PMID: 34684917 PMCID: PMC8538702 DOI: 10.3390/nano11102476] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/01/2021] [Accepted: 09/15/2021] [Indexed: 01/09/2023]
Abstract
Metal-ion batteries are capable of delivering high energy density with a longer lifespan. However, they are subject to several issues limiting their utilization. One critical impediment is the budding and extension of solid protuberances on the anodic surface, which hinders the cell functionalities. These protuberances expand continuously during the cyclic processes, extending through the separator sheath and leading to electrical shorting. The progression of a protrusion relies on a number of in situ and ex situ factors that can be evaluated theoretically through modeling or via laboratory experimentation. However, it is essential to identify the dynamics and mechanism of protrusion outgrowth. This review article explores recent advances in alleviating metal dendrites in battery systems, specifically alkali metals. In detail, we address the challenges associated with battery breakdown, including the underlying mechanism of dendrite generation and swelling. We discuss the feasible solutions to mitigate the dendrites, as well as their pros and cons, highlighting future research directions. It is of great importance to analyze dendrite suppression within a pragmatic framework with synergy in order to discover a unique solution to ensure the viability of present (Li) and future-generation batteries (Na and K) for commercial use.
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Affiliation(s)
| | - M. V. Reddy
- Centre of Excellence in Transportation Electrification and Energy Storage (CETEES), Institute of Research Hydro-Québec, 1806, Lionel-Boulet Blvd., Varennes, QC J3X 1S1, Canada
| | - Karim Zaghib
- Department of Mining and Materials Engineering, McGill University, Wong Building, 3610 University Street, Montreal, QC H3A OC5, Canada;
| | - Michel Armand
- Centre for Cooperative Research on Alternative Energies, Basque Research and Technology Alliance, Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain;
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117576, Singapore
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25
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Eiby YA, Lingwood BE, Wright IMR. Plasma Leak From the Circulation Contributes to Poor Outcomes for Preterm Infants: A Working Hypothesis. Front Neurol 2021; 12:636740. [PMID: 34408716 PMCID: PMC8364946 DOI: 10.3389/fneur.2021.636740] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 07/09/2021] [Indexed: 11/13/2022] Open
Abstract
Preterm infants are at high risk of death and disability resulting from brain injury. Impaired cardiovascular function leading to poor cerebral oxygenation is a significant contributor to these adverse outcomes, but current therapeutic approaches have failed to improve outcome. We have re-examined existing evidence regarding hypovolemia and have concluded that in the preterm infant loss of plasma from the circulation results in hypovolemia; and that this is a significant driver of cardiovascular instability and thus poor cerebral oxygenation. High capillary permeability, altered hydrostatic and oncotic pressure gradients, and reduced lymphatic return all combine to increase net loss of plasma from the circulation at the capillary. Evidence is presented that early hypovolemia occurs in preterm infants, and that capillary permeability and pressure gradients all change in a way that promotes rapid plasma loss at the capillary. Impaired lymph flow, inflammation and some current treatment strategies may further exacerbate this plasma loss. A framework for testing this hypothesis is presented. Understanding these mechanisms opens the way to novel treatment strategies to support cardiovascular function and cerebral oxygenation, to replace current therapies, which have been shown not to change outcomes.
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Affiliation(s)
- Yvonne A Eiby
- Faculty of Medicine, Perinatal Research Centre, Centre for Clinical Research, The University of Queensland, Brisbane, QLD, Australia
| | - Barbara E Lingwood
- Faculty of Medicine, Perinatal Research Centre, Centre for Clinical Research, The University of Queensland, Brisbane, QLD, Australia.,Department of Neonatology, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - Ian M R Wright
- Faculty of Medicine, Perinatal Research Centre, Centre for Clinical Research, The University of Queensland, Brisbane, QLD, Australia.,The School of Medicine, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia.,Australian Institute of Tropical Health and Medicine, The College of Medicine and Dentistry, James Cook University, Cairns, QLD, Australia
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26
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Doerrer C, Capone I, Narayanan S, Liu J, Grovenor CRM, Pasta M, Grant PS. High Energy Density Single-Crystal NMC/Li 6PS 5Cl Cathodes for All-Solid-State Lithium-Metal Batteries. ACS Appl Mater Interfaces 2021; 13:37809-37815. [PMID: 34324288 PMCID: PMC8397257 DOI: 10.1021/acsami.1c07952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
To match the high capacity of metallic anodes, all-solid-state batteries require high energy density, long-lasting composite cathodes such as Ni-Mn-Co (NMC)-based lithium oxides mixed with a solid-state electrolyte (SSE). However in practice, cathode capacity typically fades due to NMC cracking and increasing NMC/SSE interface debonding because of NMC pulverization, which is only partially mitigated by the application of a high cell pressure during cycling. Using smart processing protocols, we report a single-crystal particulate LiNi0.83Mn0.06Co0.11O2 and Li6PS5Cl SSE composite cathode with outstanding discharge capacity of 210 mA h g-1 at 30 °C. A first cycle coulombic efficiency of >85, and >99% thereafter, was achieved despite a 5.5% volume change during cycling. A near-practical discharge capacity at a high areal capacity of 8.7 mA h cm-2 was obtained using an asymmetric anode/cathode cycling pressure of only 2.5 MPa/0.2 MPa.
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Affiliation(s)
| | - Isaac Capone
- Department
of Materials, University of Oxford, Oxford OX1 3PH, U.K.
| | | | - Junliang Liu
- Department
of Materials, University of Oxford, Oxford OX1 3PH, U.K.
| | - Chris R. M. Grovenor
- Department
of Materials, University of Oxford, Oxford OX1 3PH, U.K.
- The
Faraday Institution, Quad One, Becquerel Avenue, Harwell Campus, Didcot OX11 0RA, U.K.
| | - Mauro Pasta
- Department
of Materials, University of Oxford, Oxford OX1 3PH, U.K.
- The
Faraday Institution, Quad One, Becquerel Avenue, Harwell Campus, Didcot OX11 0RA, U.K.
| | - Patrick S. Grant
- Department
of Materials, University of Oxford, Oxford OX1 3PH, U.K.
- The
Faraday Institution, Quad One, Becquerel Avenue, Harwell Campus, Didcot OX11 0RA, U.K.
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27
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Park HI, Park YK, Kim SK, Jang HD, Kim H. Hollow Graphene as an Expansion-Inhibiting Electrical Interconnector for Silicon Electrodes in Lithium-Ion Batteries. ACS Appl Mater Interfaces 2021; 13:35759-35766. [PMID: 34289303 DOI: 10.1021/acsami.1c08969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Huge volume changes of silicon particles upon alloying and dealloying reactions with lithium are a major reason for the poor cycle performance of silicon-based anodes for lithium-ion batteries. To suppress dimensional changes of silicon is a key strategy in attempts to improve the electrochemical performance of silicon-based anodes. Here, we demonstrate that a conductive agent can be exploited to offset the mechanical strain imposed on silicon electrodes caused by volume expansion of silicon associated with lithiation. Hollow graphene particles as a conductive agent inhibit volume expansion by absorbing the swelling of silicon upon lithiation through flattening the free voids surrounded by the graphene shell. As a result, silicon electrodes with hollow graphene showed a height expansion of 20.4% after full lithiation with a capacity retention of 69% after 200 cycles, while the silicon electrode with conventional carbon black showed an expansion of 76.8% under the same conditions with a capacity retention of 38%. Some of the deflated hollow graphene returns to its initial shape on delithiation due to the mechanical flexibility of the graphene shell layer. Such a robust microstructure of a silicon electrode incorporating hollow graphene that serves as both an expansion inhibitor and a conductive agent greatly improves capacity retention compared with silicon electrodes with the conventionally used carbon black.
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Affiliation(s)
- Hyeong-Il Park
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - You Kyung Park
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Sun Kyung Kim
- Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea
| | - Hee Dong Jang
- Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea
| | - Hansu Kim
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
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28
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Martin C, Piekarski F, Mutlak H, Schalk R, Dubinski D, Zacharowski K, Raimann F. Influence of temperature on volume, weight and density changes of i-gel masks. Anaesthesiol Intensive Ther 2020; 52:119-25. [PMID: 32191829 DOI: 10.5114/ait.2020.93416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The i-gel mask is a second-generation, single-use supraglottic airway device which does not have an inflatable cuff. The cuff consists of a thermoplastic elastomer and its mechanism of sealing still remains unclear. Various theories such as temperature-dependent changes in hardness and volume expansion as well as fluid absorption have been discussed. The aim of the present study is to investigate changes in volume, weight and density caused by temperature changes. MATERIAL AND METHODS Three i-gel masks (sizes 3, 4 and 5) were heated in a water bath from 10°C to 50°C in 5°C steps. The changes in weight, volume, and density were measured at each temperature step. In a second study, the identical parameters of masks (n = 5 of sizes 3, 4 and 5) used in patients were investigated. Results of volume and density between benchtop and patient measurements were examined for correlation. RESULTS All masks investigated, regardless of the size, showed a significant linear temperature-dependent volume expansion (sizes 3, 4 and 5: P < 0.001), a weight increase (sizes 3: P = 0.018; 4: P = 0.027; and 5: P = 0.006) and a linear decrease in density (sizes 3, 4 and 5: P < 0.001). There was a very strong correlation between the results of benchtop and patient measurements (volume: P < 0.001; density: P < 0.001). CONCLUSIONS We observed significant changes in all three properties investigated. Thus, a temperature-dependent volume expansion and weight increasement was observed, which can be considered as a further explanation for improved sealing after insertion.
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Saini SS, Sundaram V, Kumar P, Rohit MK. Functional echocardiographic preload markers in neonatal septic shock. J Matern Fetal Neonatal Med 2021; 35:6815-6822. [PMID: 33985398 DOI: 10.1080/14767058.2021.1926447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND There are no established clinical or laboratory markers of preload adequacy and fluid responsiveness in management of neonatal shock. Functional echocardiographic preload markers are evaluated in children and adults, but there is no data in neonatal septic shock. We evaluated five functional echocardiographic preload markers during intravenous volume resuscitation in neonatal septic shock. OBJECTIVE (1) To compare baseline functional echocardiographic preload markers between neonates with septic shock and their "matched" healthy controls. (2) To compare echocardiographic preload markers before and after intravenous volume resuscitation. METHODS In this cohort study, we enrolled neonates with septic shock (cases) and recorded five preload markers - inferior vena cava collapsibility index (IVC-CI), left ventricular end-diastolic (LVEDV) & end-systolic volume (LVESV) and their indices (LVEDVI, LVESVI) - before initiation of intravenous fluid resuscitation (baseline evaluation). An equal number of "matched hemodynamically stable" controls were recruited, who underwent functional echocardiographic assessment once. In neonates with shock, we recorded these markers again after volume resuscitation. RESULTS We analyzed 46 neonates (23 cases and 23 controls). Neonates with shock had significantly elevated baseline IVC-CI as compared to controls [53% (21, 100) vs. 20% (15, 24) respectively, p-value = .01). Rest 4 echocardiographic markers (LVEDV, LVESV, LVEDVI, and LVESVI) were comparable between cases and controls. Sixteen neonates (70% of 23) received intravenous fluid resuscitation and rest 7 (30%) were started directly on vasoactive drugs. None of the preload markers changed significantly after volume resuscitation as compared to the baseline values including IVC-CI, which was almost significant [74% (33, 100) at baseline to 48% (13, 93) after 10 mL/kg and 50% (40, 69) after 20 mL/kg, (p = .05). All preload markers were comparable between survivors and non-survivors. CONCLUSION Neonates with septic shock had significantly elevated IVC-CI at baseline as compared to hemodynamically stable neonates. None of the preload markers changed significantly after volume resuscitation as compared to the baseline values including IVC-CI, which was almost significant.
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Affiliation(s)
- Shiv Sajan Saini
- Division of Neonatology, Department of Paediatrics, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Venkataseshan Sundaram
- Division of Neonatology, Department of Paediatrics, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Praveen Kumar
- Division of Neonatology, Department of Paediatrics, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Manoj Kumar Rohit
- Department of Cardiology, Post Graduate Institute of Medical Education & Research, Chandigarh, India
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Dalmagro TL, Teixeira-Neto FJ, Celeita-Rodríguez N, Garofalo NA, López-Castañeda B, Nascimento-Junior PD. Comparison between pulse pressure variation and systolic pressure variation measured from a peripheral artery for accurately predicting fluid responsiveness in mechanically ventilated dogs. Vet Anaesth Analg 2021; 48:501-508. [PMID: 34020897 DOI: 10.1016/j.vaa.2021.01.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 12/17/2020] [Accepted: 01/08/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To compare pulse pressure variation (PPV) and systolic pressure variation (SPV) measured from a peripheral artery to predict fluid responsiveness in anesthetized healthy dogs. STUDY DESIGN Prospective study. ANIMALS A total of 39 dogs (13.8-26.8 kg) anesthetized with isoflurane for elective ovariohysterectomy. METHODS Ventilation was controlled (tidal volume 12 mL kg-1; 40% inspiratory pause). PPV and SPV were recorded from a dorsal pedal artery catheter using an automated algorithm. A fluid challenge (FC) with lactated Ringer's solution (20 mL kg-1 over 15 minutes) was administered once (21 animals) or twice (18 animals) before surgery. Increases in transpulmonary thermodilution stroke volume index > 15% from values recorded before each FC defined responders to volume expansion. Final fluid responsiveness status was based on the response to single FC or second FC. Predictive ability of PPV and SPV was compared by receiver operating characteristic (ROC) curve analysis and by the range of cut-off values associated with uncertain results (gray zone). RESULTS All animals after the single FC were responders; all animals administered two FCs were nonresponders after the second FC. The area under the ROC curve (AUROC) of PPV (0.968) did not differ from that of SPV (0.937) (p = 0.45). Best cut-off thresholds to discriminate responders from nonresponders were >11.7% (PPV) and >7.4 mmHg (SPV). The gray zone of PPV and SPV was 8.2-14.6% and 7.0-7.4 mmHg, respectively. The percentage of animals with PPV and SPV values within the gray zone was less for SPV (10.2%) than for PPV (30.8%). CONCLUSIONS AND CLINICAL RELEVANCE PPV and SPV obtained from the dorsal pedal artery are useful predictors of fluid responsiveness in dogs. Using an automated algorithm, SPV may more accurately predict fluid responsiveness than PPV, with responders identifiable by PPV > 14.6% and SPV > 7.4 mmHg.
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Affiliation(s)
- Tábata L Dalmagro
- Faculdade de Medicina, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
| | - Francisco J Teixeira-Neto
- Faculdade de Medicina, Universidade Estadual Paulista (UNESP), Botucatu, Brazil; Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista (UNESP), Botucatu, Brazil.
| | | | - Natache A Garofalo
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista (UNESP), Botucatu, Brazil
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Hu G, Yu R, Liu Z, Yu Q, Zhang Y, Chen Q, Wu J, Zhou L, Mai L. Surface Oxidation Layer-Mediated Conformal Carbon Coating on Si Nanoparticles for Enhanced Lithium Storage. ACS Appl Mater Interfaces 2021; 13:3991-3998. [PMID: 33439618 DOI: 10.1021/acsami.0c19673] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Si is a well-known high-capacity lithium-ion battery anode material; however, it suffers from conductivity and volume expansion issues. Herein, we develop a "surface oxidation" strategy to introduce a SiOx layer on Si nanoparticles for subsequent carbon coating. It is found that the surface SiOx layer could facilitate the conformal resin coating process through strong interactions with phenolic resin, and well-defined core@double-shell-structured Si@SiOx@C can be obtained after further carbonization. Without the surface SiOx layer, only a negligible fraction of Si nanoparticles can be encapsulated into the carbon matrix. With enhanced conductivity and confined volume change, Si@SiOx@C demonstrates high reversible capacity as well as long-term durability.
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Affiliation(s)
- Guangwu Hu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Ruohan Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Zhenhui Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Qiang Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Yuanyuan Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Qiang Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Jinsong Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
- Nanostructure Research Centre (NRC), Wuhan University of Technology, Wuhan 430070, China
| | - Liang Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
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Zhang JY, You HZ, Wang MJ, Zhang Q, Dong XY, Liu JF, Chen J. High-phosphorus diet controlled for sodium elevates blood pressure in healthy adults via volume expansion. J Clin Hypertens (Greenwich) 2021; 23:849-859. [PMID: 33486869 PMCID: PMC8678725 DOI: 10.1111/jch.14182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/23/2020] [Accepted: 01/03/2021] [Indexed: 01/26/2023]
Abstract
Whether increasing exposure to dietary phosphorus can lead to adverse clinical outcomes in healthy people is not clear. In this open‐label prospective cross‐over study, we are to explore the impact of various dietary phosphorus intake on mineral, sodium metabolisms and blood pressure in young healthy adults. There were 3 separate study periods of 5 days, each with a 5 days washout period between different diets interventions. Six young healthy male volunteers with normal nutrition status were recruited in Phase I Clinical Research Center and sequentially exposed to the following diets: (a) normal‐phosphorus diet (NPD): 1500 mg/d, (b) low‐phosphorus diet (LPD): 500 mg/d, (c) high‐phosphorus diet (HPD): 2300 mg/d. HPD induced a significant rise in daily average serum phosphate (1.47 ± 0.02 mmol/L [4.56 ± 0.06 mg/dl]) compared to NPD (1.34 ± 0.02 mmol/L [4.15 ± 0.06 mg/dL]) and LPD (1.17 ± 0.02 mmol/L [3.63 ± 0.06 mg/dL]) (p < .05). Daily average levels of serum parathyroid hormone and fibroblast growth factor 23 in HPD were significantly higher, and serum 1,25(OH)2D3 was remarkably lower than those in LPD. HPD induced a significant decrease in daily average serum aldosterone and an increase in daily average atrial natriuretic peptide level compared to LPD. The 24‐hour urine volume in HPD subjects was less than that in LPD subjects. HPD significantly increased daily average systolic blood pressure by 6.02 ± 1.24 mm Hg compared to NPD and by 8.58 ± 1.24mm Hg compared to LPD (p < .05). Our study provides the first evidence that 5‐day high‐phosphorus diet can induce elevation in SBP in young healthy adults, which may due to volume expansion.
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Affiliation(s)
- Jia-Ying Zhang
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China.,Division of Nutrition, Huashan Hospital, Fudan University, Shanghai, China.,National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Huai-Zhou You
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China.,National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Meng-Jing Wang
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China.,National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Qian Zhang
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China.,National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Xin-Yu Dong
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jing-Fang Liu
- Division of Nutrition, Huashan Hospital, Fudan University, Shanghai, China.,National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Jing Chen
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China.,National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
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AlMarabeh S, O'Neill J, Cavers J, Lucking EF, O'Halloran KD, Abdulla MH. Chronic intermittent hypoxia impairs diuretic and natriuretic responses to volume expansion in rats with preserved low-pressure baroreflex control of the kidney. Am J Physiol Renal Physiol 2021; 320:F1-F16. [PMID: 33166181 DOI: 10.1152/ajprenal.00377.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/26/2020] [Accepted: 11/03/2020] [Indexed: 12/17/2022] Open
Abstract
We examined the effects of exposure to chronic intermittent hypoxia (CIH) on baroreflex control of renal sympathetic nerve activity (RSNA) and renal excretory responses to volume expansion (VE) before and after intrarenal transient receptor potential vanilloid 1 (TRPV1) blockade by capsaizepine (CPZ). Male Wistar rats were exposed to 96 cycles of hypoxia per day for 14 days (CIH) or normoxia. Urine flow and absolute Na+ excretion during VE were less in CIH-exposed rats, but the progressive decrease in RSNA during VE was preserved. Assessment of the high-pressure baroreflex revealed an increase in the operating and response range of RSNA and decreased slope in CIH-exposed rats with substantial hypertension [+19 mmHg basal mean arterial pressure (MAP)] but not in a second cohort with modest hypertension (+12 mmHg). Intrarenal CPZ caused diuresis, natriuresis, and a reduction in MAP in sham-exposed (sham) and CIH-exposed rats. After intrarenal CPZ, diuretic and natriuretic responses to VE in CIH-exposed rats were equivalent to those of sham rats. TRPV1 expression in the renal pelvic wall was similar in both experimental groups. Exposure to CIH did not elicit glomerular hypertrophy, renal inflammation, or oxidative stress. We conclude that exposure to CIH 1) does not impair the low-pressure baroreflex control of RSNA; 2) has modest effects on the high-pressure baroreflex control of RSNA, most likely indirectly due to hypertension; 3) can elicit hypertension in the absence of kidney injury; and 4) impairs diuretic and natriuretic responses to fluid overload. Our results suggest that exposure to CIH causes renal dysfunction, which may be relevant to obstructive sleep apnea.
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Affiliation(s)
- Sara AlMarabeh
- Department of Physiology, School of Medicine, College of Medicine and Health, University College Cork, Cork, Ireland
| | - Julie O'Neill
- Department of Physiology, School of Medicine, College of Medicine and Health, University College Cork, Cork, Ireland
| | - Jeremy Cavers
- Department of Physiology, School of Medicine, College of Medicine and Health, University College Cork, Cork, Ireland
| | - Eric F Lucking
- Department of Physiology, School of Medicine, College of Medicine and Health, University College Cork, Cork, Ireland
| | - Ken D O'Halloran
- Department of Physiology, School of Medicine, College of Medicine and Health, University College Cork, Cork, Ireland
| | - Mohammed H Abdulla
- Department of Physiology, School of Medicine, College of Medicine and Health, University College Cork, Cork, Ireland
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Ewalts M, Dawkins T, Boulet LM, Thijssen D, Stembridge M. The influence of increased venous return on right ventricular dyssynchrony during acute and sustained hypoxaemia. Exp Physiol 2020; 106:925-937. [PMID: 33369788 DOI: 10.1113/ep088657] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 12/19/2020] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? Right ventricular dyssynchrony is a marker of function that is elevated in healthy individuals exposed to acute hypoxia, but does it remain elevated during sustained exposure to high altitude hypoxia, and can it be normalised by augmenting venous return? What is the main finding and its importance? For the first time it is demonstrated that (i) increasing venous return in acute hypoxia restores the synchrony of right ventricular contraction and (ii) dyssynchrony is evident after acclimatisation to high altitude, and remains sensitive to changes in venous return. Therefore, the interpretation of right ventricular dyssynchrony requires consideration the prevailing haemodynamic state. ABSTRACT Regional heterogeneity in timing of right ventricular (RV) contraction (RV dyssynchrony; RVD) occurs when pulmonary artery systolic pressure (PASP) is increased during acute hypoxia. Interestingly, RVD is not observed during exercise, a stimulus that increases both PASP and venous return. Therefore, we hypothesised that RVD in healthy humans is sensitive to changes in venous return, and examined whether (i) increasing venous return in acute hypoxia lowers RVD and (ii) if RVD is further exaggerated in sustained hypoxia, given increased PASP is accompanied by decreased ventricular filling at high altitude. RVD, PASP and right ventricular end-diastolic area (RVEDA) were assessed using transthoracic two-dimensional and speckle-tracking echocardiography during acute normobaric hypoxia ( F i O 2 = 0.12) and sustained exposure (5-10 days) to hypobaric hypoxia (3800 m). Venous return was augmented with lower body positive pressure at sea level (LBPP; +10 mmHg) and saline infusion at high altitude. PASP was increased in acute hypoxia (20 ± 6 vs. 28 ± 7, P < 0.001) concomitant to an increase in RVD (18 ± 7 vs. 38 ± 10, P < 0.001); however, the addition of LBPP during hypoxia decreased RVD (38 ± 0 vs. 26 ± 10, P < 0.001). Sustained hypoxia increased PASP (20 ± 4 vs. 26 ± 5, P = 0.008) and decreased RVEDA (24 ± 4 vs. 21 ± 2, P = 0.042), with RVD augmented (14 ± 5 vs. 31 ± 12, P = 0.001). Saline infusion increased RVEDA (21 ± 2 vs. 23 ± 3, P = 0.008) and reduced RVD (31 ± 12 vs. 20 ± 9, P = 0.001). In summary, an increase in PASP secondary to acute and sustained exposure to hypoxia augments RVD, which can be at least partly reduced via increased venous return.
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Affiliation(s)
- Michiel Ewalts
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK.,Department of Physiology, Radboudumc, Nijmegen, The Netherlands
| | - Tony Dawkins
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - Lindsey M Boulet
- Centre for Heart Lung and Vascular Health, University of British Columbia, Kelowna, British Columbia, Canada
| | - Dick Thijssen
- Department of Physiology, Radboudumc, Nijmegen, The Netherlands
| | - Mike Stembridge
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
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Huang C, AlMarabeh S, Cavers J, Abdulla MH, Johns EJ. Effects of intracerebroventricular leptin and orexin-A on the baroreflex control of renal sympathetic nerve activity in conscious rats fed a normal or high-fat diet. Clin Exp Pharmacol Physiol 2020; 48:585-596. [PMID: 33352624 DOI: 10.1111/1440-1681.13451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/21/2020] [Accepted: 12/01/2020] [Indexed: 11/30/2022]
Abstract
This study examined the effect of leptin and orexin-A on autonomic baroreflex control in conscious Wistar rats exposed to high-fat (45% fat) or normal (3.4%) diet for 4 weeks. Renal sympathetic nerve activity (RSNA), mean arterial pressure (MAP) and heart rate (HR) were monitored during the generation of baroreflex gain curves and acute volume expansion (VEP). Intracerebroventricular (ICV) leptin (1 μg/min) increased RSNA in the normal diet group (0.31 ± 0.04 vs 0.23 ± 0.03 mV/s) and MAP in the high-fat diet group (115 ± 5 vs 105 ± 5 mm Hg, P < .05). Orexin-A (50 ng/min) increased RSNA, HR and MAP in the high-fat diet group (0.26 ± 0.03 vs 0.22 ± 0.02 mV/s, 454 ± 8 vs 417 ± 12 beats/min, 117 ± 1 vs 108 ± 1 mm Hg) and the normal diet group (0.18 ± 0.05 vs 0.17 ± 0.05 mV/s, 465 ± 10 vs 426 ± 6 beats/min, 116 ± 2 vs 104 ± 3 mm Hg). Baroreflex sensitivity for RSNA was increased during ICV leptin by 50% in the normal diet group, compared to 14% in the high-fat diet group (P < .05). Similarly, orexin-A increased baroreflex sensitivity by 56% and 50% in the high-fat and normal diet groups, respectively (all P < .05). During ICV saline, VEP decreased RSNA by 31 ± 5% (P < .05) after 10 minutes and the magnitude of this response was blunted during ICV infusion of leptin (17 ± 2%, P < .05) but not orexin-A in the normal diet group. RSNA response to VEP was not changed during ICV leptin or orexin-A in the high-fat diet group. These findings indicate possible central roles for leptin and orexin-A in modulating the baroreflexes under normal or increased fat intake in conscious rats and potential therapeutic approaches for obesity associated hypertension.
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Affiliation(s)
- Chunlong Huang
- Department of Physiology, Western Gateway Building, University College Cork, Cork, Ireland
| | - Sara AlMarabeh
- Department of Physiology, Western Gateway Building, University College Cork, Cork, Ireland
| | - Jeremy Cavers
- Department of Physiology, Western Gateway Building, University College Cork, Cork, Ireland
| | - Mohammed H Abdulla
- Department of Physiology, Western Gateway Building, University College Cork, Cork, Ireland
| | - Edward J Johns
- Department of Physiology, Western Gateway Building, University College Cork, Cork, Ireland
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Lei X, An M, Wang Y, Yi S, Zhu Y, Hu S, Li Y, Zhu S. The Effects of Acute and Chronic Inflammation on the Dynamics of Fluid Shift of Ringer's Solution and Hemodynamics during Surgery. Biol Pharm Bull 2020; 43:1455-1462. [PMID: 32759599 DOI: 10.1248/bpb.b19-00631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to investigate the influences of acute and chronic inflammation on the dynamics of fluid shift of Ringer's solution and hemodynamics in patients during surgery. Thirty-seven patients with the American Society of Anesthesiologists (ASA) grades I-II were enrolled and allocated to two study groups according to the type of disease and operation and inflammation, including patients undergoing emergency appendectomy (Acute group, n = 19) and patients undergoing elective cholecystectomy (Chronic group, n = 18). All of the patients were administered 15 mL/kg of Ringer's lactated (LR) solution at a constant rate over 35 min before the induction of anesthesia. Plasma dilution (PD), volume expansion (VE), volume expansion efficiency (VEE), and extravascular volume (EVV) were calculated based on the concentration of hemoglobin within 2 h post-infusion. Heart rate (HR), arterial blood pressure and urine output were also recorded. PD and VE peaked at the end of infusion, while VEE peaked at the beginning of infusion in all of the patients. After infusion, PD, VE and VEE in the Acute group were all higher than those in the Chronic group (p < 0.05). PD and VE were higher during anesthesia or surgery than during awake or non-surgery (p < 0.001). The mean arterial pressure (MAP) and diastolic pressure (DBP) in the Acute group were significantly lower (p < 0.001) and HR was significantly higher (p < 0.001) than in the Chronic group during the study periods. It was suggested that patients with acute inflammation be treated with individualized fluid therapy during surgery.
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Affiliation(s)
- Xiuzhen Lei
- Department of Anesthesiology, the First Affiliated Hospital, College of Medicine, Zhejiang University
| | - Manli An
- Department of Anesthesiology, the First Affiliated Hospital, College of Medicine, Zhejiang University
| | - Yulong Wang
- Department of Anesthesiology, the First Affiliated Hospital, College of Medicine, Zhejiang University
| | - Shenghua Yi
- Department of Anesthesiology and Clinical Research Center, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University)
| | - Yeke Zhu
- Department of Anesthesiology, the First Affiliated Hospital, College of Medicine, Zhejiang University
| | - Shuangyan Hu
- Department of Anesthesiology and Clinical Research Center, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University)
| | - Yuhong Li
- Department of Anesthesiology and Clinical Research Center, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University)
| | - Shengmei Zhu
- Department of Anesthesiology, the First Affiliated Hospital, College of Medicine, Zhejiang University
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Karuppiah S, Keller C, Kumar P, Jouneau PH, Aldakov D, Ducros JB, Lapertot G, Chenevier P, Haon C. A Scalable Silicon Nanowires-Grown-On-Graphite Composite for High-Energy Lithium Batteries. ACS Nano 2020; 14:12006-12015. [PMID: 32902949 DOI: 10.1021/acsnano.0c05198] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Silicon (Si) is the most promising anode candidate for the next generation of lithium-ion batteries but difficult to cycle due to its poor electronic conductivity and large volume change during cycling. Nanostructured Si-based materials allow high loading and cycling stability but remain a challenge for process and engineering. We prepare a Si nanowires-grown-on-graphite one-pot composite (Gt-SiNW) via a simple and scalable route. The uniform distribution of SiNW and the graphite flakes alignment prevent electrode pulverization and accommodate volume expansion during cycling, resulting in very low electrode swelling. Our designed nanoarchitecture delivers outstanding electrochemical performance with a capacity retention of 87% after 250 cycles at 2C rate with an industrial electrode density of 1.6 g cm-3. Full cells with NMC-622 cathode display a capacity retention of 70% over 300 cycles. This work provides insights into the fruitful engineering of active composites at the nano- and microscales to design efficient Si-rich anodes.
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Affiliation(s)
- Saravanan Karuppiah
- Université Grenoble Alpes, CEA, CNRS, IRIG, SYMMES, STEP, 38000 Grenoble, France
- Université Grenoble Alpes, CEA, LITEN, DEHT, 38000 Grenoble, France
| | - Caroline Keller
- Université Grenoble Alpes, CEA, CNRS, IRIG, SYMMES, STEP, 38000 Grenoble, France
- Université Grenoble Alpes, CEA, LITEN, DEHT, 38000 Grenoble, France
| | - Praveen Kumar
- Université Grenoble Alpes, CEA, IRIG, MEM, LEMMA, 38000 Grenoble, France
| | | | - Dmitry Aldakov
- Université Grenoble Alpes, CEA, CNRS, IRIG, SYMMES, STEP, 38000 Grenoble, France
| | | | - Gérard Lapertot
- Université Grenoble Alpes, CEA, IRIG, PHELIQS, IMAPEC, 38000 Grenoble, France
| | - Pascale Chenevier
- Université Grenoble Alpes, CEA, CNRS, IRIG, SYMMES, STEP, 38000 Grenoble, France
| | - Cédric Haon
- Université Grenoble Alpes, CEA, LITEN, DEHT, 38000 Grenoble, France
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Nandi P, Howe JM. Determining the Volume Expansion at Grain Boundaries Using Extended Energy-Loss Fine Structure Analysis. Microsc Microanal 2019; 25:1130-1138. [PMID: 31407643 DOI: 10.1017/s1431927619014740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Grain boundaries (GBs) play an important role in material behavior, so considerable effort has gone into determining their structure and properties. Studies of GBs have revealed a correlation between the GB energy and expansion of the planes normal to the GB, or the so-called normal volume expansion. In this investigation, the volume expansion at several GBs was experimentally determined using extended energy-loss fine structure (EXELFS) analysis in a scanning/transmission electron microscope, allowing changes in the nearest-neighbor (n.n.) distances to be determined with nanometer spatial resolution. EXELFS performed on three-model GBs showed that the average n.n. distances at the GBs increased with increasing GB energy. Additionally, the total volume expansion at the GBs, calculated using complementary plasmon energy profiles, showed excellent agreement with volume expansions measured using other experimental techniques. Hence, this study demonstrates that EXELFS is a useful technique to measure the normal volume expansion at GBs. When combined with the results from complementary studies on the same GBs using valence electron energy-loss spectroscopy, this work further shows that the GB energy increases in relation to both the decrease in electron density at the GB and an accompanying increase in specific volume expansion at the GB.
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Affiliation(s)
- Proloy Nandi
- Department of Materials Science and Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, VA 22904-4745, USA
| | - James M Howe
- Department of Materials Science and Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, VA 22904-4745, USA
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Ghazi ZA, Sun Z, Sun C, Qi F, An B, Li F, Cheng HM. Key Aspects of Lithium Metal Anodes for Lithium Metal Batteries. Small 2019; 15:e1900687. [PMID: 30972975 DOI: 10.1002/smll.201900687] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/04/2019] [Indexed: 05/18/2023]
Abstract
Rechargeable batteries are considered promising replacements for environmentally hazardous fossil fuel-based energy technologies. High-energy lithium-metal batteries have received tremendous attention for use in portable electronic devices and electric vehicles. However, the low Coulombic efficiency, short life cycle, huge volume expansion, uncontrolled dendrite growth, and endless interfacial reactions of the metallic lithium anode are major obstacles in their commercialization. Extensive research efforts have been devoted to address these issues and significant progress has been made by tuning electrolyte chemistry, designing electrode frameworks, discovering nanotechnology-based solutions, etc. This Review aims to provide a conceptual understanding of the current issues involved in using a lithium metal anode and to unveil its electrochemistry. The most recent advancements in lithium metal battery technology are outlined and suggestions for future research to develop a safe and stable lithium anode are presented.
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Affiliation(s)
- Zahid Ali Ghazi
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences Shenyang, Liaoning, 110016, China
| | - Zhenhua Sun
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences Shenyang, Liaoning, 110016, China
| | - Chengguo Sun
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences Shenyang, Liaoning, 110016, China
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, China
| | - Fulai Qi
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences Shenyang, Liaoning, 110016, China
| | - Baigang An
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, China
| | - Feng Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences Shenyang, Liaoning, 110016, China
| | - Hui-Ming Cheng
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences Shenyang, Liaoning, 110016, China
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, 518055, China
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Assersen KB, Høilund‐Carlsen PF, Olsen MH, Greve SV, Gam‐Hadberg JC, Braad P, Damkjaer M, Bie P. The exaggerated natriuresis of essential hypertension occurs independently of changes in renal medullary blood flow. Acta Physiol (Oxf) 2019; 226:e13266. [PMID: 30770642 DOI: 10.1111/apha.13266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/10/2019] [Accepted: 02/12/2019] [Indexed: 01/20/2023]
Abstract
AIMS In patients with essential hypertension, abnormal renal sodium handling includes exaggerated natriuresis in response to extracellular volume expansion. We tested the hypothesis that exaggerated natriuresis is associated with increases in medullary and/or cortical renal blood flow. METHODS Patients with mild essential hypertension, but no signs of end organ damage, and control subjects were studied after 4 days of dietary standardization (<60 mmol Na+ day-1 ) preceded in patients by a 14-day drug washout period. On the study day, subjects received a 4-hour intravenous volume expansion with saline (2.1% of body mass). Renal medullary and cortical blood flows were measured by PET scanning using H2 15 O as tracer; anatomical regions of interest were defined by contrast-enhanced CT scanning. RESULTS In patients, arterial blood pressure increased during volume expansion (107 ± 2-114 ± 3 mm Hg, P < 0.05) in contrast to the control group (92 ± 2-92 ± 2 mm Hg). Renal sodium excretion increased more in patients than in controls (+133 ± 31 µmol min-1 vs +61 ± 14 µmol min-1 , respectively, P < 0.05) confirming exaggerated natriuresis. During volume expansion, renal medullary blood flow did not change significantly in patients (2.8 ± 0.4-2.5 ± 0.5 mL (g tissue)-1 min-1 ) or in controls (3.2 ± 0.3-3.1 ± 0.2 mL (g tissue)-1 min-1 ). In control subjects, renal cortical blood flow fell during volume expansion (4.1 ± 0.3-3.7 ± 0.2 mL (g tissue)-1 min-1 , P < 0.05) in contrast to patients in which deviations remained insignificant. CONCLUSION Exaggerated natriuresis, a hallmark of essential hypertension, is not mediated by increases in regional, renal blood flow.
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Affiliation(s)
- Kasper B. Assersen
- Cardiovascular and Renal Research, Institute of Molecular Medicine University of Southern Denmark Odense Denmark
| | | | | | - Sara V. Greve
- Department of Endocrinology Odense University Hospital Svendborg Denmark
| | | | - Poul‐Erik Braad
- Department of Nuclear Medicine Odense University Hospital Odense Denmark
| | - Mads Damkjaer
- Hans Christian Andersen Children's Hospital Odense University Hospital Odense Denmark
| | - Peter Bie
- Cardiovascular and Renal Research, Institute of Molecular Medicine University of Southern Denmark Odense Denmark
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Hrib J, Chylikova Krumbholcova E, Duskova-Smrckova M, Hobzova R, Sirc J, Hruby M, Michalek J, Hodan J, Lesny P, Smucler R. Hydrogel Tissue Expanders for Stomatology. Part II. Poly(styrene-maleic anhydride) Hydrogels. Polymers (Basel) 2019; 11:polym11071087. [PMID: 31247964 PMCID: PMC6680895 DOI: 10.3390/polym11071087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/14/2019] [Accepted: 06/22/2019] [Indexed: 11/16/2022] Open
Abstract
Self-inflating soft tissue expanders represent a valuable modality in reconstructive surgery. For this purpose, particularly synthetic hydrogels that increase their volume by swelling in aqueous environment are used. The current challenge in the field is to deliver a material with a suitable protracted swelling response, ideally with an induction period (for sutured wound healing) followed by a linear increase in volume lasting several days for required tissue reconstruction. Here, we report on synthesis, swelling, thermal, mechanical and biological properties of novel hydrogel tissue expanders based on poly(styrene-alt-maleic anhydride) copolymers covalently crosslinked with p-divinylbenzene. The hydrogels exerted hydrolysis-driven swelling response with induction period over the first two days with minimal volume change and gradual volume growth within 30 days in buffered saline solution. Their final swollen volume reached more than 14 times the dry volume with little dependence on the crosslinker content. The mechanical coherence of samples during swelling and in their fully swollen state was excellent, the compression modulus of elasticity being between 750 and 850 kPa. In vitro cell culture experiments and in vivo evaluation in mice models showed excellent biocompatibility and suitable swelling responses meeting thus the application requirements as soft tissue expanders.
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Affiliation(s)
- Jakub Hrib
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | | | | | - Radka Hobzova
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Jakub Sirc
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Martin Hruby
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Jiri Michalek
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Jiri Hodan
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Petr Lesny
- Institute of Hematology and Blood Transfusion, U nemocnice 2094/1, 128 20 Prague 2, Czech Republic
| | - Roman Smucler
- 1st Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic
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Qin B, Diemant T, Zhang H, Hoefling A, Behm RJ, Tübke J, Varzi A, Passerini S. Revisiting the Electrochemical Lithiation Mechanism of Aluminum and the Role of Li-rich Phases (Li 1+x Al) on Capacity Fading. ChemSusChem 2019; 12:2609-2619. [PMID: 30896892 DOI: 10.1002/cssc.201900597] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/21/2019] [Indexed: 06/09/2023]
Abstract
Aluminum is an appealing anode material for high-energy-density lithium-ion batteries (LIBs), owing to its low cost, environmental benignity, high specific capacity, and lower relative volume expansion compared with other alloying materials. However, both, the working and capacity fading processes are not yet consistently and comprehensively understood, which has largely hindered its development. In this study, the electrochemical alloying process of aluminum anodes with lithium is systematically studied by the combination of several in situ and ex situ techniques, providing new insights into phase transitions, electrode dynamics, and surface chemistry. Particular attention is paid to the role of the Li-rich alloys (Li1+x Al). Its existence on the surface of the Al electrode is unexpectedly observed, and its growth in the electrode bulk is found to be strictly correlated with cell failure. Interestingly, cell failure can be delayed by choosing an appropriate electrolyte. This work contributes to a solid and comprehensive understanding of the puzzling Al (de-)lithiation processes, which is fundamental and highly enlightening for future research work on Al and other alloyed anodes.
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Affiliation(s)
- Bingsheng Qin
- Helmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Helmholtzstrasse 11, 89081, Ulm, Germany
- Karlsruhe Institute of Technology (KIT), PO Box 3640, 76021, Karlsruhe, Germany
| | - Thomas Diemant
- Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, 89081, Ulm, Germany
| | - Huang Zhang
- Helmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Helmholtzstrasse 11, 89081, Ulm, Germany
- Karlsruhe Institute of Technology (KIT), PO Box 3640, 76021, Karlsruhe, Germany
| | - Alexander Hoefling
- Helmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Helmholtzstrasse 11, 89081, Ulm, Germany
| | - R Jürgen Behm
- Helmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Helmholtzstrasse 11, 89081, Ulm, Germany
- Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, 89081, Ulm, Germany
| | - Jens Tübke
- Karlsruhe Institute of Technology (KIT), PO Box 3640, 76021, Karlsruhe, Germany
| | - Alberto Varzi
- Helmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Helmholtzstrasse 11, 89081, Ulm, Germany
- Karlsruhe Institute of Technology (KIT), PO Box 3640, 76021, Karlsruhe, Germany
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Helmholtzstrasse 11, 89081, Ulm, Germany
- Karlsruhe Institute of Technology (KIT), PO Box 3640, 76021, Karlsruhe, Germany
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43
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Dai F, Yi R, Yang H, Zhao Y, Luo L, Gordin ML, Sohn H, Chen S, Wang C, Zhang S, Wang D. Minimized Volume Expansion in Hierarchical Porous Silicon upon Lithiation. ACS Appl Mater Interfaces 2019; 11:13257-13263. [PMID: 30810309 DOI: 10.1021/acsami.9b01501] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Silicon (Si) remains one of the most promising anode materials for next-generation lithium-ion batteries (LIBs). The key challenge for Si anodes is the huge volume change during lithiation-delithiation cycles that leads to electrode pulverization and rapid capacity fading. Here, we report a hierarchical porous Si (hp-Si) with a tailored porous structure [tunable primary pores (20-200 nm) and secondary nanopores (∼3-10 nm)] that can effectively minimize the volume expansion. An in situ transmission electron microscopy (TEM) study revealed that the hp-Si material with the same porosity but larger primary pores can more effectively accommodate lithiation-induced volume expansion, giving rise to a much reduced apparent volume expansion on both material and electrode levels. Chemomechanical modeling revealed that because of the different relative stiffnesses of the lithiated and unlithiated Si phases, the primary pore size plays a key role in accommodating the volume expansion of lithiated Si. The higher structural stability of the hp-Si materials with larger primary pores also maintains the fast diffusion channels of the connective pores, giving rise to better power capability and capacity retention upon electrochemical cycling. Our findings point toward an optimized hp-Si material with minimal volume change during electrochemical cycling for next-generation LIBs.
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Affiliation(s)
| | | | | | | | - Langli Luo
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
| | | | - Hiesang Sohn
- Department of Chemical Engineering , Kwangwoon University , Seoul 01897 , Republic of Korea
| | | | - Chongmin Wang
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
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Celeita-Rodríguez N, Teixeira-Neto FJ, Garofalo NA, Dalmagro TL, Girotto CH, Oliveira GCV, Santos IF. Comparison of the diagnostic accuracy of dynamic and static preload indexes to predict fluid responsiveness in mechanically ventilated, isoflurane anesthetized dogs. Vet Anaesth Analg 2019; 46:276-288. [PMID: 30979542 DOI: 10.1016/j.vaa.2018.12.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 12/03/2018] [Accepted: 12/12/2018] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To compare the diagnostic accuracy of pulse pressure variation (PPV), stroke volume variation from pulse contour analysis (SVVPCA), plethysmographic variability index (PVI), central venous pressure (CVP) and global end-diastolic volume index measured by transpulmonary thermodilution (GEDVITPTD) to predict fluid responsiveness (FR) in dogs. STUDY DESIGN Prospective study. ANIMALS A group of 40 bitches (13.8-26.8 kg) undergoing ovariohysterectomy. METHODS Anesthesia was maintained with isoflurane under volume-controlled ventilation (tidal volume 12 mL kg-1; inspiratory pause during 40% of inspiratory time; inspiration:expiration ratio 1:1.5). Transpulmonary thermodilution cardiac output was recorded through a femoral artery catheter. FR was evaluated by a fluid challenge (lactated Ringer's, 20 mL kg-1 over 15 minutes) administered once (n = 21) or twice (n = 18) before surgery. Individuals were responders if stroke volume index measured by transpulmonary thermodilution increased >15% after the last fluid challenge. RESULTS Of the 39 animals studied, 21 were responders and 18 were nonresponders. Area under the receiver operating characteristics curve (AUROC) was 0.976, 0.906, 0.868 and 0.821 for PPV, PVI, CVP and SVVPCA, respectively (p < 0.0001 from AUROC = 0.5). GEDVITPTD failed to predict FR (AUROC: 0.660, p = 0.078). Best cut-off thresholds discriminating responders and nonresponders, with respective zones of diagnostic uncertainty (gray zones) were: PPV >16% (15-16%), PVI >11% (10-13%), SVVPCA >10% (9-18%) and CVP ≤1 mmHg (0-3 mmHg). Percentage of animals within gray zone limits was 13% (PPV), 28% (PVI), 51% (SVVPCA) and 67% (CVP). CONCLUSIONS AND CLINICAL RELEVANCE PPV has better diagnostic accuracy to predict FR (conclusive results in nearly 90% of population) than other preload indexes in healthy dogs. When invasive blood pressure is unavailable, PVI will predict FR with reasonable accuracy (conclusive results in approximately 70% of the population). PPV and PVI values above gray zone limits (>16% and >13%, respectively) can reliably predict responders to volume expansion.
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Affiliation(s)
| | - Francisco J Teixeira-Neto
- Faculdade de Medicina, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil; Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil.
| | - Natache A Garofalo
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil
| | - Tábata L Dalmagro
- Faculdade de Medicina, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil
| | - Carolina H Girotto
- Faculdade de Medicina, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil
| | | | - Ivan Fc Santos
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil
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Domi Y, Usui H, Yamaguchi K, Yodoya S, Sakaguchi H. Silicon-Based Anodes with Long Cycle Life for Lithium-Ion Batteries Achieved by Significant Suppression of Their Volume Expansion in Ionic-Liquid Electrolyte. ACS Appl Mater Interfaces 2019; 11:2950-2960. [PMID: 30608119 DOI: 10.1021/acsami.8b17123] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Elemental Si has a high theoretical capacity and has attracted attention as an anode material for high energy density lithium-ion batteries. Rapid capacity fading is the main problem with Si-based electrodes; this is mainly because of a massive volume change in Si during lithiation-delithiation. Here, we report that combining an ionic-liquid electrolyte with a charge capacity limit of 1000 mA h g-1 significantly suppresses Si volume expansion, improving the cycle life. Phosphorus-doping of Si also enhances the suppression and increases the Li+ diffusion coefficient. In contrast, the Si layer expands significantly in an organic electrolyte even with the charge capacity limit and even in an ionic-liquid electrolyte without the limit. We demonstrated that the homogeneously distributed Si lithiation-delithiation, phase-transition control from the Si to Li-rich Li-Si alloy phases, formation of a surface film with structural and/or mechanical stability, and faster Li+ diffusion contribute to suppressing Si volume expansion.
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Affiliation(s)
- Yasuhiro Domi
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN) , National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba , Ibaraki 305-0044 , Japan
| | - Hiroyuki Usui
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN) , National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba , Ibaraki 305-0044 , Japan
| | - Kazuki Yamaguchi
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN) , National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba , Ibaraki 305-0044 , Japan
| | - Shuhei Yodoya
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN) , National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba , Ibaraki 305-0044 , Japan
| | - Hiroki Sakaguchi
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN) , National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba , Ibaraki 305-0044 , Japan
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46
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Lankadeva YR, Evans RG, Kosaka J, Booth LC, Iguchi N, Bellomo R, May CN. Alterations in regional kidney oxygenation during expansion of extracellular fluid volume in conscious healthy sheep. Am J Physiol Regul Integr Comp Physiol 2018; 315:R1242-R1250. [PMID: 30332304 DOI: 10.1152/ajpregu.00247.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Expansion of extracellular fluid volume with crystalloid solutions is a common medical intervention, but its effects on renal cortical and medullary oxygenation are poorly understood. Therefore, we instrumented sheep under general anesthesia to enable continuous measurement of systemic and renal hemodynamics, global renal oxygen delivery and consumption, and intrarenal tissue perfusion and oxygen tension (Po2) in conscious animals ( n = 7). The effects of three sequential intermittent infusions of 500 ml of compound sodium lactate solution, administered at hourly intervals, were determined. Volume expansion induced transient increases in mean arterial pressure (+7 ± 2%), central venous pressure (+50 ± 19%), and cardiac output (+15 ± 3%). There were sustained increases in renal medullary tissue Po2 (+35 ± 10%) despite increases in global renal oxygen consumption (+66 ± 18%) and renal oxygen extraction (+64 ± 8%). Volume expansion did not significantly alter renal blood flow, renal oxygen delivery, or medullary perfusion. The sustained increase in medullary Po2 was paralleled by increased bladder urine Po2 (34 ± 4%). Cortical perfusion and Po2 did not change significantly. Our findings indicate that extracellular fluid volume expansion can increase renal medullary oxygenation, providing a potential mechanistic basis for its use as prophylaxis against iatrogenic acute kidney injury. They also indicate that continuous measurement of bladder urine Po2 could be used to monitor the effects of volume expansion on medullary oxygenation. However, the mechanisms mediating increased medullary oxygenation during volume expansion remain to be determined.
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Affiliation(s)
- Yugeesh R Lankadeva
- Florey Institute of Neuroscience and Mental Health , Victoria , Australia.,Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne , Victoria , Australia
| | - Roger G Evans
- Cardiovascular Disease Program, Biomedicine Discovery Institute and Department of Physiology, Monash University , Victoria , Australia
| | - Junko Kosaka
- Florey Institute of Neuroscience and Mental Health , Victoria , Australia
| | - Lindsea C Booth
- Florey Institute of Neuroscience and Mental Health , Victoria , Australia
| | - Naoya Iguchi
- Florey Institute of Neuroscience and Mental Health , Victoria , Australia
| | - Rinaldo Bellomo
- School of Medicine, University of Melbourne , Victoria , Australia
| | - Clive N May
- Florey Institute of Neuroscience and Mental Health , Victoria , Australia.,Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne , Victoria , Australia
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47
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Abstract
Contrast-induced acute kidney injury, also called contrast-induced nephropathy, is one of the main causes of acute renal failure/acute kidney injury (AKI) in hospitalized patients within 48 to 72 hours of contrast media administration during various radiologic procedures. Several factors can be responsible for contrast-induced acute tubular necrosis (ATN); however, patient and procedure-related factors play the lead role in determining the development of contrast-induced nephropathy. There is no definitive treatment and hydration remains the mainstay preventive strategy. This article will review the incidence, criteria for definitive diagnosis, and an effective approach on how to prevent contrast-induced nephropathy in a clinical setup.
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Affiliation(s)
- Asad Ali
- Medicine, CMH Lahore Medical College and Institute of Dentistry, Lahore, PAK
| | - Chandur Bhan
- Internal Medicine, Chandka Medical College Hospital, Larkana, PAK
| | | | | | - Shahzad Ahmed Sami
- Internal Medicine, CMH Lahore Medical College and Institute of Dentistry, Lahore, PAK
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48
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Jacquet-Lagrèze M, Tiberghien N, Evain JN, Hanna N, Courtil-Teyssedre S, Lilot M, Baudin F, Chardonnal L, Bompard D, Koffel C, Portefaix A, Javouhey E, Fellahi JL. Diagnostic accuracy of a calibrated abdominal compression to predict fluid responsiveness in children. Br J Anaesth 2018; 121:1323-1331. [PMID: 30442260 DOI: 10.1016/j.bja.2018.06.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 05/24/2018] [Accepted: 06/27/2018] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Fluid administration to increase stroke volume index (SVi) is a cornerstone of haemodynamic resuscitation. We assessed the accuracy of SVi variation during a calibrated abdominal compression manoeuvre (ΔSVi-CAC) to predict fluid responsiveness in children. METHODS Patients younger than 8 yr with acute circulatory failure, regardless of their ventilation status, were selected. SVi, calculated as the average of five velocity-time integrals multiplied by the left ventricular outflow tract surface area, was recorded at four different steps: baseline, after an abdominal compression with a calibrated pressure of 25 mm Hg, after return to baseline, and then after a volume expansion (VE) of 10 ml kg-1 lactated Ringer solution over 10 min. Patients were classified as responders if SVi variation after volume expansion (ΔSVi-VE) increased by at least 15%. RESULTS The 39 children included had a median [inter-quartile range (IQR)] age of 9 [5-31] months. Twenty patients were fluid responders and 19 were non-responders. ΔSVi-CAC correlated with ΔSVi-VE (r=0.829; P<0.001). The area under the receiver operating characteristic curve (ROCAUC) was 0.94 [95% confidence interval (CI), 0.85-0.99]. The best threshold for ΔSVi-CAC was 11% with a specificity of 95% [95% CI, 84-100] and a sensitivity of 75% [95% CI, 55-95]. ROCAUC of respiratory variation of IVC diameter (ΔIVC) was 0.53 [95% CI, 0.32-0.72]. CONCLUSION ΔSVi-CAC during abdominal compression was a reliable method to predict fluid responsiveness in children with acute circulatory failure regardless of their ventilation status. CLINICAL TRIALS REGISTRATION CPP Lyon sud est II: n° ANSM 2015-A00388-41 Clinicaltrial.gov: NCT02505646.
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Affiliation(s)
- M Jacquet-Lagrèze
- Département d'Anesthésie Réanimation, Centre Hospitalier Louis Pradel, Bron, France; Université Claude-Bernard Lyon 1, Campus Lyon Santé Est, Lyon, France.
| | - N Tiberghien
- Département d'Anesthésie Réanimation, Centre Hospitalier Louis Pradel, Bron, France
| | - J-N Evain
- Département de Réanimation Pédiatrique, Centre Hospitalier Femme Mère Enfant, Bron, France
| | - N Hanna
- Département d'Anesthésie Réanimation, Centre Hospitalier Louis Pradel, Bron, France
| | - S Courtil-Teyssedre
- Département de Réanimation Pédiatrique, Centre Hospitalier Femme Mère Enfant, Bron, France
| | - M Lilot
- Département d'Anesthésie Pédiatrique, Centre Hospitalier Femme Mère Enfant, Bron, France; Université Claude-Bernard Lyon 1, Campus Lyon Santé Est, Lyon, France; Centre Lyonnais d'Enseignement par Simulation en Santé, SAMSEI, Lyon, France; Health Services and Performance Research Laboratory, Université Claude Bernard Lyon 1, Lyon, France
| | - F Baudin
- Département de Réanimation Pédiatrique, Centre Hospitalier Femme Mère Enfant, Bron, France; Université Claude-Bernard Lyon 1, Campus Lyon Santé Est, Lyon, France
| | - L Chardonnal
- Département d'Anesthésie Réanimation, Centre Hospitalier Louis Pradel, Bron, France
| | - D Bompard
- Département d'Anesthésie Réanimation, Centre Hospitalier Louis Pradel, Bron, France
| | - C Koffel
- Département d'Anesthésie Réanimation, Centre Hospitalier Louis Pradel, Bron, France
| | - A Portefaix
- EPICIME-CIC 1407 de Lyon, Inserm, Hospices Civils de Lyon, Bron, France
| | - E Javouhey
- Département de Réanimation Pédiatrique, Centre Hospitalier Femme Mère Enfant, Bron, France; Université Claude-Bernard Lyon 1, Campus Lyon Santé Est, Lyon, France
| | - J-L Fellahi
- Département d'Anesthésie Réanimation, Centre Hospitalier Louis Pradel, Bron, France; Université Claude-Bernard Lyon 1, Campus Lyon Santé Est, Lyon, France
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49
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Mallamaci F, Tripepi G. [Pulmonary congestion and hypertension in hemodialysis patients]. G Ital Nefrol 2017; 34:36-40. [PMID: 28682027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Mild to moderate volume expansion is a frequent complication in dialysis patients and acute volume overload, such as acute pulmonary oedema, is one of the most worrying medical emergency in these patients. Estimated systolic blood pressure in the pulmonary artery (ePASP) is an important risk factor of mortality and cardiovascular (CV) events in the general population and in patients on dialysis. Therefore, the assessment of body water in dialysis patients is useful both from the clinical point of view for monitoring fluids as well as for prognostic purposes. However, there is still debated about what is the most suitable instrument to measure the circulating volume in clinical practice in dialysis patients. Pulmonary ultrasound is a new application of ultrasound to evaluate the content of water in the lungs and it has been recently used in high risk patients. The B-lines are a promising technique that has to be properly tested before being used and appropriately implemented in everyday clinical practice.
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Affiliation(s)
- Francesca Mallamaci
- Nephrology, Dialysis and Transplantation Unit & CNR-IFC, Reggio Calabria, Italy
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50
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Wang J, Luo H, Liu Y, He Y, Fan F, Zhang Z, Mao SX, Wang C, Zhu T. Tuning the Outward to Inward Swelling in Lithiated Silicon Nanotubes via Surface Oxide Coating. Nano Lett 2016; 16:5815-5822. [PMID: 27536960 DOI: 10.1021/acs.nanolett.6b02581] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Electrochemically induced mechanical degradation hinders the application of Si anodes in advanced lithium-ion batteries. Hollow structures and surface coatings have been often used to mitigate the degradation of Si-based anodes. However, the structural change and degradation mechanism during lithiation/delithiation of hollow Si structures with coatings remain unclear. Here, we combine in situ TEM experiment and chemomechanical modeling to study the electrochemically induced swelling of amorphous-Si (a-Si) nanotubes with different thicknesses of surface SiOx layers. Surprisingly, we find that no inward expansion occurs at the inner surface during lithiation of a-Si nanotubes with native oxides. In contrast, inward expansion can be induced by increasing the thickness of SiOx on the outer surface, thus reducing the overall outward swelling of the lithiated nanotube. Moreover, both the sandwich lithiation mechanism and the two-stage lithiation process in a-Si nanotubes remain unchanged with the increasing thickness of surface coatings. Our chemomechanical modeling reveals the mechanical confinement effects in lithiated a-Si nanotubes with and without SiOx coatings. This work not only provides insights into the degradation of nanotube anodes with surface coatings but also sheds light onto the optimal design of hollow anodes for high-performance lithium-ion batteries.
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Affiliation(s)
- Jiangwei Wang
- Center of Electron Microscopy and State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States
| | - Hao Luo
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Yang Liu
- Department of Materials Science and Engineering, North Carolina State University , Raleigh, North Carolina 27695, United States
| | - Yang He
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States
| | - Feifei Fan
- Department of Mechanical Engineering, University of Nevada , Reno, Nevada 89557, United States
| | - Ze Zhang
- Center of Electron Microscopy and State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Scott X Mao
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States
| | - Chongmin Wang
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , Richland, Washington 99352, United States
| | - Ting Zhu
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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