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Li Y, Wu S, Liu C, Liu Z, Yang W, Zhang Y, Fan H. Topochemical and phase transformation induced Co 9S 8/NC nanosheets for high-performance sodium-ion batteries. Dalton Trans 2023; 52:16519-16524. [PMID: 37877818 DOI: 10.1039/d3dt02449k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
In this paper, a cobalt-based sulfide nanosheet structure (Co9S8/NC) was successfully synthesized by topochemical and phase transformation processes from a dodecahedral cobalt-based imidazole skeleton (ZIF-67) as a self-template. The 2D sheet structure facilitates full contact of electrode materials with the electrolyte and shortens the diffusion distance for electrons and ions. In addition, the nitrogen-doped carbon framework derived from ZIF-67 promotes electron transfer and provides a reliable skeleton to buffer volume expansion during discharging and charging. Finally, Co9S8/NC exhibits excellent rate capability and stable cycling performance for the anode of a sodium ion battery, delivering a specific capacity remaining at 530 mA h g-1 after 130 cycles at a current density of 1 A g-1.
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Affiliation(s)
- Yining Li
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Shimei Wu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Chilin Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Zhiting Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Wei Yang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Yufei Zhang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Haosen Fan
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
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2
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Guo Z, Dong G, Zhang M, Gao M, Shao L, Chen M, Liu H, Ni M, Cao D, Zhu K. Sulfur-Decorated Ti 3 C 2 T X MXene for High-Performance Sodium/Potassium-Ion Batteries. Chem Asian J 2023; 18:e202300336. [PMID: 37555803 DOI: 10.1002/asia.202300336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/06/2023] [Indexed: 08/10/2023]
Abstract
As post-lithium ion batteries, both sodium-ion batteries (SIBs) and potassium ion batteries (PIBs) possess great potential for large scale energy storage. However, the application of both SIBs and PIBs are hindered by the lack of suitable electrode materials. Here, we synthesized the sulfur decorated Ti3 C2 Tx (S-T3 C2 Tx ) MXene as electrode material for SIBs and PIBs. Thanks to the sulfur functional group and the formation of Ti-S bond, which facilitates the sodium in-/desertion and strengthens the potassium ion adsorption ability, as well as enhances ion reaction kinetics and improved structure stability, the S-T3 C2 Tx exhibit excellent sodium/potassium storage performance, high reversible capacities of 151 and 101 mAh g-1 at 0.1 mA g-1 were achieved for SIBs and PIBs, respectively. Moreover, the S-T3 C2 Tx exhibits remarkable long-term capacity stability at a high density of 500 mA g-1 , providing an impressive storage of 88 mAh g-1 for SIBs and 41 mAh g-1 for PIBs even after 2000 cycles. This work could give a deep comprehension of the heteroatom modification influence on the MXene-based framework and promote the application of MXene electrodes.
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Affiliation(s)
- Zhendong Guo
- College of Science, Northeast Electric Power University, Jilin, P. R China
| | - Guangsheng Dong
- Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education), College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Man Zhang
- Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education), College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Musen Gao
- Dongying Kunyu Power Technology Co., Ltd, Dongying, P. R. China
| | - Leijun Shao
- Hanghai Aerospace Power Technology Co., Shanghai, 201114, P. R. China
| | - Meng Chen
- Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education), College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Hongli Liu
- College of Science, Northeast Electric Power University, Jilin, P. R China
| | - Mingchen Ni
- College of Science, Northeast Electric Power University, Jilin, P. R China
| | - Dianxue Cao
- Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education), College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Kai Zhu
- Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education), College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
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Lee TY, Liu WR. Reduced Graphene Oxide-Wrapped Novel CoIn 2S 4 Spinel Composite Anode Materials for Li-ion Batteries. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4367. [PMID: 36558220 PMCID: PMC9781618 DOI: 10.3390/nano12244367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
In this study, we proposed a novel CoIn2S4/reduced graphene oxide (CoIn2S4/rGO) composite anode using a hydrothermal method. By introducing electronic-conductive reduced graphene oxide (rGO) to buffer the extreme volume expansion of CoIn2S4, we prevented its polysulfide dissolution during the lithiation/de-lithiation processes. After 100 cycles, the pristine CoIn2S4 electrode demonstrated poor cycle performance of only 120 mAh/g at a current density of 0.1 A/g. However, the composition-optimized CoIn2S4/rGO composite anode demonstrated a reversible capacity of 580 mAh/g for 100 cycles, which was an improvement of 4.83 times. In addition, the ex situ XRD measurements of the CoIn2S4/rGO electrode were conducted to determine the reaction mechanism and electrochemical behavior. These results suggest that the as-synthesized CoIn2S4/rGO composite anode is a promising anode material for lithium ion batteries.
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Affiliation(s)
| | - Wei-Ren Liu
- Correspondence: ; Tel.: +886-3-2653315; Fax: 886-3-2653399
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4
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Liang C, Huang Z, Wang H, Yang T, Liu N, Liao T, Wang F, Wang X. Synthesis of Porous Hollow Spheres Co@TiO 2-x-Carbon Composites for Highly Efficient Lithium-Ion Batteries. NANOSCALE RESEARCH LETTERS 2022; 17:86. [PMID: 36063251 PMCID: PMC9445113 DOI: 10.1186/s11671-022-03719-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
The hollow TiO2 anode material has received great attention for next-generation LIBs because of its excellent stability, environmental friendly, and low volume change during lithiation/delithiation. However, there are some problems associated with the current anatase TiO2 anode materials in practical application owing to low lithium-ion diffusivity and poor reversible theoretical capacities. The introduction of defects has been turned out to be a significant and effective method to improve electronic conductivity, especially oxygen vacancies. In this paper, a facile hydrothermal reaction and subsequent chemical vapor deposition method were successfully used to fabricate Co@TiO2-x-carbon hollow nanospheres. These results suggest that the synthesized product exhibits good rate performance and superior cycling stability.
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Affiliation(s)
- Chunyong Liang
- Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Engineering and Applications, Quanzhou Normal University, Quanzhou, 362000 Fujian China
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130 China
- Changzhou Blon Minimally Invasive Medical Devices Technology Co. Ltd., Changzhou, 213100 Jiangsu China
| | - Zhongliang Huang
- Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Engineering and Applications, Quanzhou Normal University, Quanzhou, 362000 Fujian China
| | - Hongshui Wang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130 China
| | - Tai Yang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130 China
| | - Ning Liu
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130 China
| | - Tingdi Liao
- Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Engineering and Applications, Quanzhou Normal University, Quanzhou, 362000 Fujian China
| | - Feng Wang
- Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Engineering and Applications, Quanzhou Normal University, Quanzhou, 362000 Fujian China
- College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou, 362000 Fujian China
| | - Xi Wang
- China Center for Information Industry Development, Beijing, 100048 China
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5
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Ding F, Liu H, Jiang X, Jiang Y, Tu Y, Xiao W, Yan X, Li C. Co9S8 nanoparticles encapsulated in N,S co-doped hierarchical carbon as an efficient oxygen reduction electrocatalyst for microbial fuel cells. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Ren LL, Wang LH, Qin YF, Li Q. One-Pot Synthesized Amorphous Cobalt Sulfide With Enhanced Electrochemical Performance as Anodes for Lithium-Ion Batteries. Front Chem 2022; 9:818255. [PMID: 35071194 PMCID: PMC8766978 DOI: 10.3389/fchem.2021.818255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 12/13/2021] [Indexed: 11/27/2022] Open
Abstract
In order to solve the poor cycle stability and the pulverization of cobalt sulfides electrodes, a series of amorphous and crystalline cobalt sulfides were prepared by one-pot solvothermal synthesis through controlling the reaction temperatures. Compared to the crystalline cobalt sulfide electrodes, the amorphous cobalt sulfide electrodes exhibited superior electrochemical performance. The high initial discharge and charge capacities of 2,132 mAh/g and 1,443 mAh/g at 200 mA/g were obtained. The reversible capacity was 1,245 mAh/g after 200 cycles, which is much higher than the theoretical capacity. The specific capability was 815 mAh/g at 800 mA/g and increased to 1,047 mAh/g when back to 100 mA/g, indicating the excellent rate capability. The outstanding electrochemical performance of the amorphous cobalt sulfide electrodes could result from the unique characteristics of more defects, isotropic nature, and the absence of grain boundaries for amorphous nanostructures, indicating the potential application of amorphous cobalt sulfide as anodes for lithium-ion batteries.
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Affiliation(s)
- Long-Long Ren
- College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian, China
| | - Lin-Hui Wang
- College of Information Science and Engineering, Shandong Agricultural University, Taian, China
| | - Yu-Feng Qin
- College of Information Science and Engineering, Shandong Agricultural University, Taian, China
| | - Qiang Li
- College of Physics, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao, China
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7
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Qian M, Tang Y, Liu L, Zhang Y, Gao Y, Li X, Liu T. Optimizing the rate performance and cycle life of Li2MTi3O8 (M=Mn, Co, Zn)/CNTs for lithium-ion battery anodes by constructing one-dimensional carbon-based hybrid structure. Dalton Trans 2022; 51:14032-14035. [DOI: 10.1039/d2dt02395d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-dimensional nanohybrids Li2MTi3O8/CNTs (M = Mn, Co, Zn), i.e., Li2MTi3O8 nanoparticles embedded in carbon nanotubes, are synthesized by the combined means involving in sol-gel, solid phase grinding and calcination. As...
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Wang J, Zhao S, Xian X. Co9S8@partly-graphitized carbon composites obtained through catalytic graphitization strategy as anode materials for lithium-ions batteries. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115569] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Li X, Li J, Zhuo W, Li Z, Ma L, Ji Z, Pan L, Mai W. In Situ Monitoring the Potassium-Ion Storage Enhancement in Iron Selenide with Ether-Based Electrolyte. NANO-MICRO LETTERS 2021; 13:179. [PMID: 34406514 PMCID: PMC8374025 DOI: 10.1007/s40820-021-00708-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/25/2021] [Indexed: 05/19/2023]
Abstract
As one of the promising anode materials, iron selenide has received much attention for potassium-ion batteries (KIBs). Nevertheless, volume expansion and sluggish kinetics of iron selenide result in the poor reversibility and stability during potassiation-depotassiation process. In this work, we develop iron selenide composite matching ether-based electrolyte for KIBs, which presents a reversible specific capacity of 356 mAh g-1 at 200 mA g-1 after 75 cycles. According to the measurement of mechanical properties, it is found that iron selenide composite also exhibits robust and elastic solid electrolyte interphase layer in ether-based electrolyte, contributing to the improvement in reversibility and stability for KIBs. To further investigate the electrochemical enhancement mechanism of ether-based electrolyte in KIBs, we also utilize in situ visualization technique to monitor the potassiation-depotassiation process. For comparison, iron selenide composite matching carbonate-based electrolyte presents vast morphology change during potassiation-depotassiation process. When changing to ether-based electrolyte, a few minor morphology changes can be observed. This phenomenon indicates an occurrence of homogeneous electrochemical reaction in ether-based electrolyte, which results in a stable performance for potassium-ion (K-ion) storage. We believe that our work will provide a new perspective to visually monitor the potassium-ion storage process and guide the improvement in electrode material performance.
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Affiliation(s)
- Xiaodan Li
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, People's Republic of China
| | - Jinliang Li
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, People's Republic of China.
| | - Wenchen Zhuo
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, People's Republic of China
| | - Zhibin Li
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, People's Republic of China
| | - Liang Ma
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, People's Republic of China
| | - Zhong Ji
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, People's Republic of China
| | - Likun Pan
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai, 200241, People's Republic of China
| | - Wenjie Mai
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, People's Republic of China.
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10
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Feng S, Ma L, Lin J, Lu X, Xu L, Wu J, Yan X, Fan X. SnS nanoparticles anchored on nitrogen-doped carbon sheets derived from metal-organic-framework precursors as anodes with enhanced electrochemical sodium ions storage. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138535] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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11
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Zhu W, Cheng Y, Wang C, Pinna N, Lu X. Transition metal sulfides meet electrospinning: versatile synthesis, distinct properties and prospective applications. NANOSCALE 2021; 13:9112-9146. [PMID: 34008677 DOI: 10.1039/d1nr01070k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
One-dimensional (1D) electrospun nanomaterials have attracted significant attention due to their unique structures and outstanding chemical and physical properties such as large specific surface area, distinct electronic and mass transport, and mechanical flexibility. Over the past years, the integration of metal sulfides with electrospun nanomaterials has emerged as an exciting research topic owing to the synergistic effects between the two components, leading to novel and interesting properties in energy, optics and catalysis research fields for example. In this review, we focus on the recent development of the preparation of electrospun nanomaterials integrated with functional metal sulfides with distinct nanostructures. These functional materials have been prepared via two efficient strategies, namely direct electrospinning and post-synthesis modification of electrospun nanomaterials. In this review, we systematically present the chemical and physical properties of the electrospun nanomaterials integrated with metal sulfides and their application in electronic and optoelectronic devices, sensing, catalysis, energy conversion and storage, thermal shielding, adsorption and separation, and biomedical technology. Additionally, challenges and further research opportunities in the preparation and application of these novel functional materials are also discussed.
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Affiliation(s)
- Wendong Zhu
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Ya Cheng
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Ce Wang
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Nicola Pinna
- Institut für Chemie and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
| | - Xiaofeng Lu
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
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12
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Wang Z, Li F, Ding W, Tang X, Xu F, Ding Y. Structural evolution of Si-based anode materials during the lithiation reaction. NANOTECHNOLOGY 2021; 32:315707. [PMID: 33882458 DOI: 10.1088/1361-6528/abfa54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Si-based materials have been intensively investigated as anode materials for Li-ion batteries. However, the structural evolution of the materials during the lithiation reaction is still unrevealed. In this paper, the structural parameters and mechanical properties of Si, SiOx(0 < x < 2) and SiO2during the lithiation reaction are studied by first-principle calculation based on density functional theory. The relationship between the Li number and expansion coefficient, elastic constant, modulus, and Poisson's ratio is systematically calculated.
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Affiliation(s)
- Zuozhang Wang
- Institute of Rheological Mechanics, Xiangtan University, Hunan 411105, People's Republic of China
| | - Feng Li
- Institute of Rheological Mechanics, Xiangtan University, Hunan 411105, People's Republic of China
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei 230027, People's Republic of China
| | - Wenyu Ding
- College of Mathematics and Computational Science, Xiangtan University, Hunan 411105, People's Republic of China
| | - Xianqiong Tang
- Institute of Rheological Mechanics, Xiangtan University, Hunan 411105, People's Republic of China
| | - Fu Xu
- Institute of Rheological Mechanics, Xiangtan University, Hunan 411105, People's Republic of China
| | - Yanhuai Ding
- Institute of Rheological Mechanics, Xiangtan University, Hunan 411105, People's Republic of China
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Zhang Y, Li J, Gong Z, Xie J, Lu T, Pan L. Nitrogen and sulfur co-doped vanadium carbide MXene for highly reversible lithium-ion storage. J Colloid Interface Sci 2020; 587:489-498. [PMID: 33387843 DOI: 10.1016/j.jcis.2020.12.044] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/05/2020] [Accepted: 12/14/2020] [Indexed: 01/06/2023]
Abstract
As an emerging group of two-dimensional (2D) layered material, MXenes have received significant attention in the direction of energy storage. However, the restacking of MXene flakes severely hinders the ion transport within electrodes, which limits their application for lithium-ion batteries (LIBs). To address this issue, herein, we rationally designed and optimized the structure of N, S co-doped V2CTx MXene, which exhibits excellent electrochemical performance with a high reversible capacity of 590 mAh g-1 after 100 cycles at 0.1 A g-1 when used as anode of LIBs. Even at a high current density of 2 A g-1, a reversible capacity of 298 mAh g-1 is obtained after 300 cycles, which outperforms most of the V2CTx-based anode materials reported so far. The lithium-ion storage mechanism of N, S co-doped V2CTx MXene was studied by a series of characterizations. The results show that the significant improvement of electrochemical performance should be attributed to the facilitated charge transfer after N and S co-doping in V2CTx MXene, which can effectively improve the ion transfer kinetics during the lithiation-delithiation process. Furthermore, the expanded interlayer spacing of N, S co-doped V2CTx provides more active sites for the adsorption of lithium ions, promoting the insertion capacity of lithium ions. This work indicates that the N, S co-doped 2D V2CTx MXene should be a promising anode material for high-performance LIBs.
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Affiliation(s)
- Yajuan Zhang
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Jinliang Li
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, China.
| | - Zhiwei Gong
- School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Junpeng Xie
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, China
| | - Ting Lu
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Likun Pan
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China.
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