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电化学(中英文) ›› 2013, Vol. 19 ›› Issue (2): 184-188.  doi: 10.61558/2993-074X.2111

• 研究简报 • 上一篇    下一篇

PAni/Si/G/C复合材料的制备及电化学性能

张光辉1*,沈培康2,桑 革1,熊仁金1   

  1. 1. 中国工程物理研究院表面物理与化学重点实验室,四川 绵阳 621907;2. 中山大学 光电材料与技术国家重点实验室,广东 广州 510275
  • 收稿日期:2012-03-20 修回日期:2012-04-23 出版日期:2013-04-28 发布日期:2012-05-03
  • 通讯作者: 张光辉 E-mail:alexzhang084@yahoo.com.cn
  • 基金资助:

    广东省科学院产学研项目(No. 2009B091300025)资助

Synthesis and Electrochemical Performance of Si/C Composite Modified by PAni

ZHANG Guang-hui1*, SHEN Pei-kang2, SANG Ge1, XIONG Ren-jin1   

  1. 1. State Key Laboratory for Surface Physics & Chemistry, China Academy of Engineering Physics, Mianyang 621907, Sichuan, China; 2.The State Key Laboratory of Optoelectronic Material and Technologies , Sun Yat-Sen University, Guangzhou 510275, China
  • Received:2012-03-20 Revised:2012-04-23 Published:2013-04-28 Online:2012-05-03
  • Contact: ZHANG Guang-hui E-mail:alexzhang084@yahoo.com.cn

摘要: 通过球磨及高温固相法制得了Si/C复合材料,并氧化合成聚苯胺包覆于硅碳复合材料的表面. 采用XRD、SEM、红外和热重分析观察复合材料形貌、分析样品结构,循环伏安法和充放电测试表征PAni/Si/G/C电极电化学性能. 结果表明,PAni/Si/C复合材料表面覆盖了较为完整的片层状结构的聚苯胺膜,可逆容量高达784 mAh.g-1,50次周期循环后,嵌锂容量保持在690 mAh?g-1.

关键词: 锂离子电池, 负极材料, 硅, 聚苯胺

Abstract: Silicon/carbon (Si/C) composite materials were prepared through high-energy ball milling and high-temperature solid-phase method, and then coated with thin polyaniline (PAni) film by oxidation. The microstructure and component of the composites were characterized by SEM, XRD, IR, TG, and the electrochemical performance was investigated by cyclic voltammetry (CV) and galvanostatic charge-discharge tests. The results showed that the surface of PAni/Si/G/C composite was coating with complete lamellar structure of PAni film. Its reversible capacity was 784 mAh.g-1and 690 mAh.g-1 could be maintained after 50th charge-discharge cycles.

Key words: lithium-ion battery, anode materials, silicon, polyaniline

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