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High Initial Reversible Capacity and Long Life of Ternary SnO2-Co-carbon Nanocomposite Anodes for Lithium-Ion Batteries.
Deng, Pan; Yang, Jing; Li, Shengyang; Fan, Tian-E; Wu, Hong-Hui; Mou, Yun; Huang, Hui; Zhang, Qiaobao; Peng, Dong-Liang; Qu, Baihua.
Afiliação
  • Deng P; Pen-Tung Sah Institute of Micro-Nano Science and Technology, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, People's Republic of China.
  • Yang J; Pen-Tung Sah Institute of Micro-Nano Science and Technology, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, People's Republic of China.
  • Li S; Pen-Tung Sah Institute of Micro-Nano Science and Technology, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, People's Republic of China.
  • Fan TE; College of Automation and Key Laboratory of Industrial Internet of Things and Networked Control, Ministry of Education, Chongqing University of Posts and Telecommunications, Chongqing, 400065, People's Republic of China. fante@cqupt.edu.cn.
  • Wu HH; Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.
  • Mou Y; School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
  • Huang H; Pen-Tung Sah Institute of Micro-Nano Science and Technology, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, People's Republic of China.
  • Zhang Q; Pen-Tung Sah Institute of Micro-Nano Science and Technology, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, People's Republic of China. zhangqiaobao@xmu.edu.cn.
  • Peng DL; Pen-Tung Sah Institute of Micro-Nano Science and Technology, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, People's Republic of China.
  • Qu B; Pen-Tung Sah Institute of Micro-Nano Science and Technology, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, People's Republic of China. bhqu@xmu.edu.cn.
Nanomicro Lett ; 11(1): 18, 2019 Mar 01.
Article em En | MEDLINE | ID: mdl-34137978
The two major limitations in the application of SnO2 for lithium-ion battery (LIB) anodes are the large volume variations of SnO2 during repeated lithiation/delithiation processes and a large irreversible capacity loss during the first cycle, which can lead to a rapid capacity fade and unsatisfactory initial Coulombic efficiency (ICE). To overcome these limitations, we developed composites of ultrafine SnO2 nanoparticles and in situ formed Co(CoSn) nanocrystals embedded in an N-doped carbon matrix using a Co-based metal-organic framework (ZIF-67). The formed Co additives and structural advantages of the carbon-confined SnO2/Co nanocomposite effectively inhibited Sn coarsening in the lithiated SnO2 and mitigated its structural degradation while facilitating fast electronic transport and facile ionic diffusion. As a result, the electrodes demonstrated high ICE (82.2%), outstanding rate capability (~ 800 mAh g-1 at a high current density of 5 A g-1), and long-term cycling stability (~ 760 mAh g-1 after 400 cycles at a current density of 0.5 A g-1). This study will be helpful in developing high-performance Si (Sn)-based oxide, Sn/Sb-based sulfide, or selenide electrodes for LIBs. In addition, some metal organic frameworks similar to ZIF-67 can also be used as composite templates.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nanomicro Lett Ano de publicação: 2019 Tipo de documento: Article País de publicação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nanomicro Lett Ano de publicação: 2019 Tipo de documento: Article País de publicação: Alemanha