1
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Chen D, Mu S. Molten Salt-Assisted Synthesis of Catalysts for Energy Conversion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2408285. [PMID: 39246151 DOI: 10.1002/adma.202408285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/28/2024] [Indexed: 09/10/2024]
Abstract
A breakthrough in manufacturing procedures often enables people to obtain the desired functional materials. For the field of energy conversion, designing and constructing catalysts with high cost-effectiveness is urgently needed for commercial requirements. Herein, the molten salt-assisted synthesis (MSAS) strategy is emphasized, which combines the advantages of traditional solid and liquid phase synthesis of catalysts. It not only provides sufficient kinetic accessibility, but effectively controls the size, morphology, and crystal plane features of the product, thus possessing promising application prospects. Specifically, the selection and role of the molten salt system, as well as the mechanism of molten salt assistance are analyzed in depth. Then, the creation of the catalyst by the MSAS and the electrochemical energy conversion related application are introduced in detail. Finally, the key problems and countermeasures faced in breakthroughs are discussed and look forward to the future. Undoubtedly, this systematical review and insights here will promote the comprehensive understanding of the MSAS and further stimulate the generation of new and high efficiency catalysts.
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Affiliation(s)
- Ding Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Shichun Mu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
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2
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Yuan Y, Fan J, Yang Z, Mahurin SM, Luo H, Wang T, Dai S. A Mechanochemically-Triggered, Self-Powered Flash Heating Synthesis of Phosphorous/Caron Composites for Li-Ion Batteries. SMALL METHODS 2024:e2400460. [PMID: 39248667 DOI: 10.1002/smtd.202400460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 08/11/2024] [Indexed: 09/10/2024]
Abstract
"Flash heating" that transiently generates high temperatures above 1000 °C has great potential in synthesizing new materials with unprecedently properties. Up to now, the realization of "flash heating" still relies on the external power, which requires sophisticated setups for vast energy input. In this study, a mechanochemically triggered, self-powered flash heating approach is proposed by harnessing the enthalpy from chemical reactions themselves. Through a model reaction between Mg3N2/carbon and P2O5, it is demonstrated that this self-powered flash heating is controllable and compatible with conventional devices. Benefit from the self-powered flash heating, the resulting product has a nanoporous structure with a uniform distribution of phosphorus (P) nanoparticles in carbon (C) nanobowls with strong P─-C bonds. Consequently, the P/C composite demonstrates remarkable energy storage performance in lithium-ion batteries, including high capacity (1417 mAh g-1 at 0.2 A g-1), robust cyclic stability (935 mAh g-1 at 2 A g-1 after 800 cycles, 91.6% retention), high-rate capability (739 mAh g-1 at 20 A g-1), high loading performance (3.6 mAh cm-2 after 100 cycles), and full cell cyclic stability (90% retention after 100 cycles). This work broadens the flash heating concept and can potentially find application in various fields.
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Affiliation(s)
- Yating Yuan
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Juntian Fan
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Zhenzhen Yang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Shannon Mark Mahurin
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Huimin Luo
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Tao Wang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Sheng Dai
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
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3
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Wang F, Liu W, Li P, Guan Z, Li W, Wang D. Self-Assembly of Silicon Nanotubes Driven by a Biphasic Transition from the Natural Mineral Montmorillonite in Molten Salt Electrolysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311334. [PMID: 38402440 DOI: 10.1002/smll.202311334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/08/2024] [Indexed: 02/26/2024]
Abstract
Silicon nanotubes (SNTs) have been considered as promising anode materials for lithium-ion batteries (LIBs). However, the reported strategies for preparing SNTs generally have special requirements for either expensive templates or complex catalysts. It is necessary to explore a cost-effective and efficient approach for the preparation of high-performance SNTs. In this work, a biphasic transformation strategy involving "solid-state reduction" and "dissolution-deposition" in molten salts is developed to prepare SNTs using montmorillonite as a precursor. The rod-like intermediate of silicon-aluminum-calcium is initially reduced in solid state, which then triggers the continuous dissolution and deposition of calcium silicate in the inner space of the intermediate to form a hollow structure during the subsequent reduction process. The transition from solid to liquid is crucial for improving the kinetics of deoxygenation and induces the self-assembly of SNTs during electrolysis. When the obtained SNTs is used as anode materials for LIBs, they exhibit a high capacity of 2791 mAh g-1 at 0.2 A g-1, excellent rate capability of 1427 mA h g-1 at 2 A g-1, and stable cycling performance with a capacity of 2045 mAh g-1 after 200 cycles at 0.5 A g-1. This work provides a self-assembling, controllable, and cost-effective approach for fabricating SNTs.
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Affiliation(s)
- Fan Wang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan, 430072, P. R. China
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, 311300, P. R. China
| | - Wei Liu
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan, 430072, P. R. China
| | - Peng Li
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan, 430072, P. R. China
| | - Ziheng Guan
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan, 430072, P. R. China
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, 311300, P. R. China
| | - Wei Li
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan, 430072, P. R. China
| | - Dihua Wang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan, 430072, P. R. China
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4
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Zhang J, Wang W, Chen X, Jin J, Yan X, Huang J. Single-Atom Ni Supported on TiO 2 for Catalyzing Hydrogen Storage in MgH 2. J Am Chem Soc 2024; 146:10432-10442. [PMID: 38498436 DOI: 10.1021/jacs.3c13970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
As an efficient and clean energy carrier, hydrogen is expected to play a key role in future energy systems. However, hydrogen-storage technology must be safe with a high hydrogen-storage density, which is difficult to achieve. MgH2 is a promising solid-state hydrogen-storage material owing to its large hydrogen-storage capacity (7.6 wt %) and excellent reversibility, but its large-scale utilization is restricted by slow hydrogen-desorption kinetics. Although catalysts can improve the hydrogen-storage kinetics of MgH2, they reduce the hydrogen-storage capacity. Single-atom catalysts maximize the atom utilization ratio and the number of interfacial sites to boost the catalytic activity, while easy aggregation at high temperatures limits further application. Herein, we designed a single-atom Ni-loaded TiO2 catalyst with superior thermal stability and catalytic activity. The optimized 15wt%-Ni0.034@TiO2 catalyst reduced the onset dehydrogenation temperature of MgH2 to 200 °C. At 300 °C, the H2 released and absorbed 4.6 wt % within 5 min and 6.53 wt % within 10 s, respectively. The apparent activation energies of MgH2 dehydrogenation and hydrogenation were reduced to 64.35 and 35.17 kJ/mol of H2, respectively. Even after 100 cycles of hydrogenation and dehydrogenation, there was still a capacity retention rate of 97.26%. The superior catalytic effect is attributed to the highly synergistic catalytic activity of single-atom Ni, numerous oxygen vacancies, and multivalent Tix+ in the TiO2 support, in which the single-atom Ni plays the dominant role, accelerating electron transfer between Mg2+ and H- and weakening the Mg-H bonds. This work paves the way for superior hydrogen-storage materials for practical unitization and also extends the application of single-atom catalysis in high-temperature solid-state reactions.
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Affiliation(s)
- Jiyue Zhang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
| | - Wenda Wang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
| | - Xiaowei Chen
- School of Science, Jimei University, Xiamen 361021, China
| | - Jinlong Jin
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
| | - Xiaojun Yan
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
- National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, Beijing 100191, China
- Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China
| | - Jianmei Huang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
- National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, Beijing 100191, China
- Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China
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5
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Choi JH, Kumari N, Kumar A, Acharya A, Ahn J, Kim J, Hwang H, Joo T, Kim JK, Lee IS. Stratum-Confined Solid-State Reaction (SC-SSR) toward Colloidal Silicon-Based Hollow Nanostructures for Bioapplications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301190. [PMID: 37096899 DOI: 10.1002/smll.202301190] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/03/2023] [Indexed: 05/03/2023]
Abstract
Silicon nanostructures (SiNSs) can provide multifaceted bioapplications; but preserving their subhundred nm size during high-temperature silica-to-silicon conversion is the major bottleneck. The SC-SSR utilizes an interior metal-silicide stratum space at a predetermined radial distance inside silica nanosphere to guide the magnesiothermic reduction reaction (MTR)-mediated synthesis of hollow and porous SiNSs. In depth mechanistic study explores solid-to-hollow transformation encompassing predefined radial boundary through the participation of metal-silicide species directing the in-situ formed Si-phase accumulation within the narrow stratum. Evolving thin-porous Si-shell remains well protected by the in-situ segregated MgO emerging as a protective cast against the heat-induced deformation and interparticle sintering. Retrieved hydrophilic SiNSs (<100 nm) can be conveniently processed in different biomedia as colloidal solutions and endocytosized inside cells as photoluminescence (PL)-based bioimaging probes. Inside the cell, rattle-like SiNSs encapsulated with Pd nanocrystals can function as biorthogonal nanoreactors to catalyze intracellular synthesis of probe molecules through C-C cross coupling reaction.
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Affiliation(s)
- Jeong Hun Choi
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Nitee Kumari
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Amit Kumar
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Anubhab Acharya
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Jungsoo Ahn
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Jaerim Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Hyeonwoong Hwang
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Jong Kyu Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - In Su Lee
- Center for Nanospace-confined Chemical Reactions (NCCR), Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University, Seoul, 03722, South Korea
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6
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Chen X, Li M, Hou J, Lu K, Yue X, Li Y, Chen L, Liu Z, Yang X. Molten salt method synthesis of multivalent cobalt and oxygen vacancy modified Nitrogen-doped MXene as highly efficient hydrogen and oxygen Evolution reaction electrocatalysts. J Colloid Interface Sci 2022; 615:831-839. [PMID: 35180631 DOI: 10.1016/j.jcis.2022.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/28/2022] [Accepted: 02/03/2022] [Indexed: 11/18/2022]
Abstract
Nitrogen-doped Ti3C2Ty MXene with multivalent cobalt and oxygen vacancy (Vo) modification was obtained by using molten salt method and greatly improved electrocatalytic performance. The structural properties of MXene and the valence state of cobalt were adjusted by controlling the molten salt temperature. When the molten salt treatment temperature was 377 °C, the obtained 377-CoOxN1-x-Ti3C2Ty maintained the chemical structure of MXene well, and also has high Co2+ content and Vo content. Electrochemical test results showed that 377-CoOxN1-x-Ti3C2Ty had the lowest Hydrogen Evolution Reaction (HER) overpotential of 87.73 mV and good electrocatalytic stability. X-ray Photoelectron Spectroscopy (XPS) results and Density Functional Theory (DFT) calculations showed that the introduction of polyvalent cobalt and Vo in the nitrogen-doped Ti3C2Ty structure effectively reduced the energy barrier of the electrocatalytic reaction of MXene.
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Affiliation(s)
- Xunxin Chen
- College of Science/Key Laboratory of Ecophysics and Department of Physics, Shihezi University, Shihezi 832003, Xinjiang, China; School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Meishan Li
- College of Science/Key Laboratory of Ecophysics and Department of Physics, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Juan Hou
- College of Science/Key Laboratory of Ecophysics and Department of Physics, Shihezi University, Shihezi 832003, Xinjiang, China.
| | - Ke Lu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Xuanyu Yue
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Yafei Li
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Long Chen
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Zhiyong Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Xiaodong Yang
- College of Science/Key Laboratory of Ecophysics and Department of Physics, Shihezi University, Shihezi 832003, Xinjiang, China.
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7
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Wang T, Luo H, Fan J, Thapaliya BP, Bai Y, Belharouak I, Dai S. Flux upcycling of spent NMC 111 to nickel-rich NMC cathodes in reciprocal ternary molten salts. iScience 2022; 25:103801. [PMID: 35243215 PMCID: PMC8859547 DOI: 10.1016/j.isci.2022.103801] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/21/2021] [Accepted: 01/19/2022] [Indexed: 12/25/2022] Open
Abstract
The proper handling of end-of-life (EOL) lithium-ion batteries (LIBs) has become an urgent and challenging issue with the surging use of LIBs, in which recovering high-value cathodes not only relieves the pressure on the raw material supply chain but also minimizes environmental pollution. Beyond direct recycling of spent cathodes to their pristine states, the direct upcycling of spent cathodes to the next-generation cathodes is of great significance to maximize the value of spent materials and to sustain the fast development of LIBs. Herein, a “reciprocal ternary molten salts” (RTMS) system was developed to directly upcycle spent NMC 111 to Ni-rich NMCs by simultaneously realizing the addition of Ni and the relithiation of Li in spent NMC 111. After RTMS flux upcycling, the obtained Ni-rich NMCs exhibited an α-NaFeO2-type layered structure, restored Li content, and excellent performance, which is very similar to that of the pristine NMC 622. A “reciprocal ternary molten salts” (RTMS) system is developed for upcycling Directly upcycling of spent NMC 111 to Ni-rich NMC (NMC 622) is realized in air RTMS provides the Li source and a flux oxygen-rich environment for upcycling
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8
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Zhong YK, Liu YL, Liu K, Wang L, Mei L, Gibson JK, Chen JZ, Jiang SL, Liu YC, Yuan LY, Chai ZF, Shi WQ. In-situ anodic precipitation process for highly efficient separation of aluminum alloys. Nat Commun 2021; 12:5777. [PMID: 34599195 PMCID: PMC8486879 DOI: 10.1038/s41467-021-26119-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 09/10/2021] [Indexed: 11/18/2022] Open
Abstract
Electrorefining process has been widely used to separate and purify metals, but it is limited by deposition potential of the metal itself. Here we report in-situ anodic precipitation (IAP), a modified electrorefining process, to purify aluminium from contaminants that are more reactive. During IAP, the target metals that are more cathodic than aluminium are oxidized at the anode and forced to precipitate out in a low oxidation state. This strategy is fundamentally based on different solubilities of target metal chlorides in the NaAlCl4 molten salt rather than deposition potential of metals. The results suggest that IAP is able to efficiently and simply separate components of aluminum alloys with fast kinetics and high recovery yields, and it is also a valuable synthetic approach for metal chlorides in low oxidation states. Traditional electrorefining process is limited by deposition potential of the metal itself. Here, the authors explore an in-situ anodic precipitation process based on different solubility of target metal chlorides that can efficiently separate components of aluminum alloys.
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Affiliation(s)
- Yu-Ke Zhong
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Ya-Lan Liu
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China.
| | - Kui Liu
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, 519000, Zhuhai, China
| | - Lin Wang
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China
| | - John K Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA, 94720, USA
| | - Jia-Zhuang Chen
- Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, 315201, Ningbo, China
| | - Shi-Lin Jiang
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yi-Chuan Liu
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China
| | - Li-Yong Yuan
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China
| | - Zhi-Fang Chai
- Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, 315201, Ningbo, China
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China.
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9
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Electrochemical preparation of porous ZnCuNi by electrodeposition in ethaline deep eutectic solvent followed by anodic or cathodic dealloying in alkaline aqueous solutions for higher nitrate reduction activity. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Weng W, Yang J, Zhou J, Gu D, Xiao W. Template-Free Electrochemical Formation of Silicon Nanotubes from Silica. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001492. [PMID: 32995133 PMCID: PMC7507395 DOI: 10.1002/advs.202001492] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 05/30/2023]
Abstract
Silicon, with its elaborate microstructure, plays important roles in energy materials. In operando engineering of microstructure during extraction is an ideal protocol to develop advanced Si-based materials. A template-free electrochemical preparation of silicon nanotubes (Si-NT) is herein achieved by co-electrolysis of SiO2 and AgCl in molten NaCl-CaCl2 at 850 °C. The in situ electrodeposited Ag facilitates the generation of a liquid Ag-Si intermediate, triggering a liquid-solid mechanism to direct the growth of Si-NT. An automatic separation of Ag from Si then occurs in the following cooling process, resulting in Ag deposits on the Ni current collector and recycling of Ag. Such a facile and smart preparation of Si-NT from affordable silica guarantees an enhanced current efficiency of 74%, a decreased energy consumption of 12.1 kW h kgSi -1, and enhanced lithium-storage capability of the electrolytic Si-NT. An in situ coating of Ag over the Si-NT can also be fulfilled by simply introducing soluble AgCl in the melts. The present study provides a template-free preparation and an in situ surface modification of Si-NT.
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Affiliation(s)
- Wei Weng
- College of Chemistry and Molecular SciencesHubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan430072P. R. China
- School of Resource and Environmental SciencesHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan430072P. R. China
| | - Jiarong Yang
- School of Resource and Environmental SciencesHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan430072P. R. China
| | - Jing Zhou
- The Institute of Advanced StudiesWuhan UniversityWuhan430072P. R. China
| | - Dong Gu
- The Institute of Advanced StudiesWuhan UniversityWuhan430072P. R. China
| | - Wei Xiao
- College of Chemistry and Molecular SciencesHubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan430072P. R. China
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11
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Weng W, Wang S, Xiao W, Lou XWD. Direct Conversion of Rice Husks to Nanostructured SiC/C for CO 2 Photoreduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001560. [PMID: 32529684 DOI: 10.1002/adma.202001560] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/09/2020] [Indexed: 05/26/2023]
Abstract
A one-step and template-free synthesis of a SiC nanowires/C (SiC-NW/C) composite from rice husks (RHs) is realized via a molten-salt-assisted electrochemical method. The process integrates simultaneously carbonization, electrodeoxidation, nanostructuring, and self-purification for converting RHs to a SiC-NW/C hybrid that is assembled from SiC NWs embedded in porous N-doped graphitic carbon with strong coupling. The SiC-NW/C nanostructure enables efficient CO2 adsorption and fast separation and transfer of charge carriers. Benefiting from the structural and compositional merits, the SiC-NW/C composite shows superior activity for photoreduction of CO2 to CO, in the absence of any additional cocatalysts or sacrificial agents. The process proposed herein might help to bridge a closed-loop carbon cycle in the whole production-utilization of biomass.
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Affiliation(s)
- Wei Weng
- College of Chemistry and Molecular Sciences, Hubei Key Laboratory of Electrochemical Power Sources, Wuhan University, Wuhan, 430072, P. R. China
| | - Sibo Wang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Wei Xiao
- College of Chemistry and Molecular Sciences, Hubei Key Laboratory of Electrochemical Power Sources, Wuhan University, Wuhan, 430072, P. R. China
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
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12
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Ge M, Tang Y, Malyi OI, Zhang Y, Zhu Z, Lv Z, Ge X, Xia H, Huang J, Lai Y, Chen X. Mechanically Reinforced Localized Structure Design to Stabilize Solid-Electrolyte Interface of the Composited Electrode of Si Nanoparticles and TiO 2 Nanotubes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002094. [PMID: 32529784 DOI: 10.1002/smll.202002094] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/20/2020] [Indexed: 06/11/2023]
Abstract
Silicon anode with extremely high theoretical specific capacity (≈4200 mAh g-1 ), experiences huge volume changes during Li-ion insertion and extraction, causing mechanical fracture of Si particles and the growth of a solid-electrolyte interface (SEI), which results in a rapid capacity fading of Si electrodes. Herein, a mechanically reinforced localized structure is designed for carbon-coated Si nanoparticles (C@Si) via elongated TiO2 nanotubes networks toward stabilizing Si electrode via alleviating mechanical strain and stabilizing the SEI layer. Benefited from the rational localized structure design, the carbon-coated Si nanoparticles/TiO2 nanotubes composited electrode (C@Si/TiNT) exhibits an ideal electrode thickness swelling, which is lower than 1% after the first cycle and increases to about 6.6% even after 1600 cycles. While for traditional C@Si/carbon nanotube composited electrode, the initial swelling ratio is about 16.7% and reaches ≈190% after 1600 cycles. As a result, the C@Si/TiNT electrode exhibits an outstanding capacity of 1510 mAh g-1 at 0.1 A g-1 with high rate capability and long-time cycling performance with 95% capacity retention after 1600 cycles. The rational design on mechanically reinforced localized structure for silicon electrode will provide a versatile platform to solve the current bottlenecks for other alloyed-type electrode materials with large volume expansion toward practical applications.
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Affiliation(s)
- Mingzheng Ge
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, School of Textile and Clothing, Nantong University, Nantong, 226019, P. R. China
| | - Yuxin Tang
- Institute of Applied Physics and Materials Engineering, University of Macau, Macau, 999078, P. R. China
| | - Oleksandr I Malyi
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yanyan Zhang
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Zhiqiang Zhu
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Zhisheng Lv
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Xiang Ge
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Huarong Xia
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Jianying Huang
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yuekun Lai
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiaodong Chen
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
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13
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Yu Z, Fang S, Zhang J, Shi B, Shi Z, Yang J. In Situ Formation of Nickel Nanoparticles from Nickel Formate for Preparation of Straight Silicon Nanowires by Molten Salt Electrolysis. ChemistrySelect 2020. [DOI: 10.1002/slct.202001009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhanglong Yu
- China Automotive Battery Research Institute Co. Ltd. North 3rd ring road Beijing 100088 People's Republic of China
- General Research Institute for Nonferrous Metals North 3rd ring road Beijing 100088 People's Republic of China
| | - Sheng Fang
- China Automotive Battery Research Institute Co. Ltd. North 3rd ring road Beijing 100088 People's Republic of China
| | - Jie Zhang
- China Automotive Battery Research Institute Co. Ltd. North 3rd ring road Beijing 100088 People's Republic of China
| | - Bimeng Shi
- China Automotive Battery Research Institute Co. Ltd. North 3rd ring road Beijing 100088 People's Republic of China
| | - Zhixia Shi
- GRINM Resources and Environment Tech. Co.Ltd. North 3rd ring road Beijing 100088 People's Republic of China
- General Research Institute for Nonferrous Metals North 3rd ring road Beijing 100088 People's Republic of China
| | - Juanyu Yang
- China Automotive Battery Research Institute Co. Ltd. North 3rd ring road Beijing 100088 People's Republic of China
- National Engineering Research Center for Rare Earth Materials North 3rd ring road Beijing 100088 People's Republic of China
- General Research Institute for Nonferrous Metals North 3rd ring road Beijing 100088 People's Republic of China
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14
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Xiao M, Zhang L, Luo B, Lyu M, Wang Z, Huang H, Wang S, Du A, Wang L. Molten‐Salt‐Mediated Synthesis of an Atomic Nickel Co‐catalyst on TiO
2
for Improved Photocatalytic H
2
Evolution. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001148] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mu Xiao
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Lei Zhang
- School of Chemistry, Physics and Mechanical Engineering Science and Engineering Faculty Queensland University of Technology Brisbane City QLD 4000 Australia
| | - Bin Luo
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Miaoqiang Lyu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Zhiliang Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Hengming Huang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Songcan Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Aijun Du
- School of Chemistry, Physics and Mechanical Engineering Science and Engineering Faculty Queensland University of Technology Brisbane City QLD 4000 Australia
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
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15
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Xiao M, Zhang L, Luo B, Lyu M, Wang Z, Huang H, Wang S, Du A, Wang L. Molten‐Salt‐Mediated Synthesis of an Atomic Nickel Co‐catalyst on TiO
2
for Improved Photocatalytic H
2
Evolution. Angew Chem Int Ed Engl 2020; 59:7230-7234. [DOI: 10.1002/anie.202001148] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Mu Xiao
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Lei Zhang
- School of Chemistry, Physics and Mechanical Engineering Science and Engineering Faculty Queensland University of Technology Brisbane City QLD 4000 Australia
| | - Bin Luo
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Miaoqiang Lyu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Zhiliang Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Hengming Huang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Songcan Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Aijun Du
- School of Chemistry, Physics and Mechanical Engineering Science and Engineering Faculty Queensland University of Technology Brisbane City QLD 4000 Australia
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
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16
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Zhu G, Jiang W, Yang J. Engineering Carbon Distribution in Silicon-Based Anodes at Multiple Scales. Chemistry 2020; 26:1488-1496. [PMID: 31603568 DOI: 10.1002/chem.201903454] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/30/2019] [Indexed: 11/07/2022]
Abstract
The successful commercialization of promising silicon-based anode materials has been hampered by their poor cycling stability caused by the huge volume change. Integration of the carbon matrix with silicon-based (C/Si-based) anode materials has been demonstrated to be a powerful solution to achieve satisfactory electrochemical performance. This minireview aims to outline recent developments on C/Si-based composites, with the emphasis on the importance of carbon distribution at multiple scales. In addition, the forms of the carbon framework (carbon sources and doping of heteroatoms) have been summarized. Particularly, a novel C/Si-based hybrid with carbon distributed at the atomic scale has been highlighted.
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Affiliation(s)
- Guanjia Zhu
- State Key Laboratory for Modification of, Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620, P. R. China
| | - Wan Jiang
- State Key Laboratory for Modification of, Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620, P. R. China.,School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333001, Jiangxi, P. R. China
| | - Jianping Yang
- State Key Laboratory for Modification of, Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620, P. R. China
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17
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Yu Z, Wang N, Fang S, Qi X, Gao Z, Yang J, Lu S. Pilot-Plant Production of High-Performance Silicon Nanowires by Molten Salt Electrolysis of Silica. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04430] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhanglong Yu
- China Automotive Battery Research Institute Company Ltd., Beijing 100088, China
| | - Ning Wang
- China Automotive Battery Research Institute Company Ltd., Beijing 100088, China
| | - Sheng Fang
- China Automotive Battery Research Institute Company Ltd., Beijing 100088, China
| | - Xiaopeng Qi
- China Automotive Battery Research Institute Company Ltd., Beijing 100088, China
| | - Zhefeng Gao
- China Automotive Battery Research Institute Company Ltd., Beijing 100088, China
| | - Juanyu Yang
- China Automotive Battery Research Institute Company Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Shigang Lu
- China Automotive Battery Research Institute Company Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
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18
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Zhou X, Liu Y, Du C, Ren Y, Xiao R, Zuo P, Yin G, Ma Y, Cheng X, Gao Y. Layer-by-Layer Engineered Silicon-Based Sandwich Nanomat as Flexible Anode for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39970-39978. [PMID: 31592626 DOI: 10.1021/acsami.9b13353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Lithium-ion batteries with high electrochemical performance and stable mechanical compliance are pivotal to propel the advanced wearable electronics forward. Herein, a high-conductive flexible electrode densified from multilayer lamellar unit cells with the silicon-based sandwich structure is rationally designed by molecular engineering. Silicon nanoparticles can be uniformly anchored to the surface of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized bacterial cellulose (TOBC) aerogel through hydrogen bonding, which effectively relaxes the drastic volume expansion of the Si-based anode. The graphite microsheets (GMs) attached on silicon nanoparticles allow the porous aerogel network to maintain excellent electrical connection in all directions, and after being switched to compact film, the conductive network enables a robust contact with silicon nanoparticles. As a result, the Si-based nanomat anode exhibits reliable cycling stability (639.4 mA h g-1 after 400 cycles at 1.0 A g-1) and enhanced rate capability (298.6 mA h g-1 at 1.6 A g-1). Notably, instead of conventional polyolefin separators, TOBC-reinforced silica aerogel is fabricated as an advanced separator to integrate the flexible all-in-one full-cell with freestanding GM/TOBC/silicon (GM/TOBC/Si) anode and GM/TOBC/LiFePO4 cathode. Driven by the unique structure and functional component, the flexible all-in-one lithium-ion batteries showcase exceptional deformation tolerance yet impressive charge/discharge behavior.
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19
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Li T, Yu D, Liu J, Wang F. Atomic Pt Promoted N-Doped Carbon as Novel Negative Electrode for Li-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2019; 11:37559-37566. [PMID: 31547655 DOI: 10.1021/acsami.9b10533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, platinum single-atom enhanced mushroom-based carbon (Pt1/MC) materials have been facilely synthesized and served as novel electrode materials in lithium-ion batteries (LIBs). The as-synthesized Pt1/MC active material shows a uniform dispersion of isolated Pt atoms on an MC support with high specific surface area and large total pore volume. As a negative electrode material for LIBs, the Pt1/MC exhibits excellent electrochemical properties, which retains a capacity of 846 mA h g-1 after 800 cycles at 2 A g-1 and 349 mA h g-1 (near to the theoretical capacity of graphite) after 6000 cycles at a high current density of 5 A g-1. The remarkable high capacity and excellent cycling stability can be attributed to their porous nanostructures and atomic-Pt-enhanced lithium-ion storage. Atomic Pt can compound with Li+ ions to form a platinum-lithium alloy during the discharge and charge process. Density functional theory (DFT) calculations are performed to verify that the PtLi5 alloy is the most stable intermedium on the MC substrate, which further enhances the lithiation and delithiation kinetics. This novel perspective is helpful to explore next-generation negative electrode materials with high capacities and good stabilities for LIBs.
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Affiliation(s)
- Tuanfeng Li
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Donglin Yu
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Jingjun Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Feng Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials , Beijing University of Chemical Technology , Beijing 100029 , China
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20
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Weng W, Zeng C, Xiao W. In Situ Pyrolysis Concerted Formation of Si/C Hybrids during Molten Salt Electrolysis of SiO 2@Polydopamine. ACS APPLIED MATERIALS & INTERFACES 2019; 11:9156-9163. [PMID: 30789694 DOI: 10.1021/acsami.9b00265] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Aiming to enhanced productivity and improved functionality of electrolytic silicon from electroreduction of solid silica in molten salts, we herein report a one-pot electrochemical preparation of Si/C hybrids via pyrolysis-cum-electrolysis (PCE) of SiO2@polydopamine (SiO2@PDA) in molten NaCl-CaCl2 at 800 °C. The obtained hybrids, denoted Si@C@Si, are composed of outmost silicon thin layers due to electrodeposition, sandwiched N-doped carbon hollow spheres derived from pyrolysis of PDA, and encapsulated silicon nanoparticles stemming from direct electrodeoxidation of SiO2. The PCE protocol shows intriguing merits on accelerated electroreduction of SiO2 and retarded generation of inconvenient SiC. The preparation conditions of Si@C@Si are optimized by varying electrolysis time and applied voltage, with the optimal conditions being identified as PCE at 2.6 V for 2 h. When evaluated as an anode for lithium-ion batteries, the obtained Si@C@Si exhibits a reversible specific capacity of 904 mAh g-1 after 100 galvanostatic charge/discharge cycles at 500 mA g-1. The proposed PCE method is highlighted as an intensified Si extraction method for advanced lithium-ion batteries, promising practical applications.
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Affiliation(s)
- Wei Weng
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy , Wuhan University , Wuhan 430072 , P. R. China
| | - Chen Zeng
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy , Wuhan University , Wuhan 430072 , P. R. China
| | - Wei Xiao
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy , Wuhan University , Wuhan 430072 , P. R. China
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21
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Zhang F, Zhu G, Wang K, Li M, Yang J. Encapsulation of core–satellite silicon in carbon for rational balance of the void space and capacity. Chem Commun (Camb) 2019; 55:10531-10534. [DOI: 10.1039/c9cc05515k] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A novel core–satellite architecture with an elaborate structural design for rational balance of the void space and capacity.
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Affiliation(s)
- Fangzhou Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
| | - Guanjia Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
| | - Kai Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
| | - Minhan Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai
- P. R. China
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