能源化学(英文) ›› 2014, Vol. 23 ›› Issue (3): 315-323.DOI: 10.1016/S2095-4956(14)60153-4

• ARTICLES • 上一篇    下一篇

Interconnected sandwich structure carbon/Si-SiO2/carbon nanospheres composite as high performance anode material for lithium-ion batteries

Yuanjin Du, Mengyan Hou, Dandan Zhou, Yonggang Wang, Congxiao Wang, Yongyao Xia   

  1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, Fudan University, Shanghai 200433, China
  • 收稿日期:2013-12-09 修回日期:2014-04-02 出版日期:2014-05-24 发布日期:2014-05-25
  • 通讯作者: Congxiao Wang, Yongyao Xia
  • 基金资助:

    This work was partially supported by the State Key Basic Research Program of PRC (2011CB935903), the National Natural Science Foundation of China (No.20925312) and Shanghai Science Technology Committee (13JC1407900). Copyright

Interconnected sandwich structure carbon/Si-SiO2/carbon nanospheres composite as high performance anode material for lithium-ion batteries

Yuanjin Du, Mengyan Hou, Dandan Zhou, Yonggang Wang, Congxiao Wang, Yongyao Xia   

  1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, Fudan University, Shanghai 200433, China
  • Received:2013-12-09 Revised:2014-04-02 Online:2014-05-24 Published:2014-05-25
  • Supported by:

    This work was partially supported by the State Key Basic Research Program of PRC (2011CB935903), the National Natural Science Foundation of China (No.20925312) and Shanghai Science Technology Committee (13JC1407900). Copyright

摘要: In the present work, an interconnected sandwich carbon/Si-SiO2/carbon nanospheres composite was prepared by template method and carbon thermal vapor deposition (TVD). The carbon conductive layer can not only efficiently improve the electronic conductivity of Si-based anode, but also play a key role in alleviating the negative effect from huge volume expansion over discharge/charge of Si-based anode. The resulting material delivered a reversible capacity of 1094 mAh/g, and exhibited excellent cycling stability. It kept a reversible capacity of 1050 mAh/g over 200 cycles with a capacity retention of 96%.

关键词: silicon, carbon, anode materials, lithium-ion batteries, template method, carbon thermal vapor deposition

Abstract: In the present work, an interconnected sandwich carbon/Si-SiO2/carbon nanospheres composite was prepared by template method and carbon thermal vapor deposition (TVD). The carbon conductive layer can not only efficiently improve the electronic conductivity of Si-based anode, but also play a key role in alleviating the negative effect from huge volume expansion over discharge/charge of Si-based anode. The resulting material delivered a reversible capacity of 1094 mAh/g, and exhibited excellent cycling stability. It kept a reversible capacity of 1050 mAh/g over 200 cycles with a capacity retention of 96%.

Key words: silicon, carbon, anode materials, lithium-ion batteries, template method, carbon thermal vapor deposition