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电化学(中英文) ›› 1996, Vol. 2 ›› Issue (4): 413-419. 

• 研究论文 • 上一篇    下一篇

锂离子电池负极碳材料的表面改性与修饰Ⅰ.表面的氧化、还原处理对碳材料电极性能的影响

马树华,国汉举,李季,梁洪泽,景遐斌,王佛松   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1996-11-28 修回日期:1996-11-28 出版日期:1996-11-28 发布日期:1996-11-28

Surface Modifications of Carbon Materials Used as Anode of Lithium Ion Battery Ⅰ.Influences of Oxidation and Reduction Pretreatment on Anode Performance

Ma Shuhua * Guo Hanju Li Ji Liang Hongze Jing Xiabin Wang Fosong   

  1. (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1996-11-28 Revised:1996-11-28 Published:1996-11-28 Online:1996-11-28

摘要: 通过各种氧化/还原体系对碳材料进行表面氧化、还原处理,研究了碳材料表面的痕量有机含氧官能团对以碳材料作为锂离子电池负极的电池性能的影响.结果表明,碳材料表面大量有机含氧官能团的存在将引起电池性能的严重恶化;相应地如对电极表面进行一定的还原处理、以减少碳表面有机官能团的含量及其氧化程度则可提高电极(碳材料)的容量及首次循环效率.文中还结合碳材料表面有机官能团对电解液溶剂的分解反应以及碳电极表面钝化膜形成的影响进行了解释.

关键词: 锂离子电池, 碳材料, 改性与修饰, 氧化、还原处理

Abstract: The influences of the trace oxygen containing functional groups on surface of carbon material on cell performance of carbon anode for lithium ion batteries were studied by means of the pretreament in various oxidant/reductant systems.The results showed that the rich oxygen containing functional groups impaired the cell performance of carbon material anode,and the reduction of these groups in quantity and oxidation degree can increase charge/discharge capacity and improve first charge/discharge efficiency.The reason was also discussed in the light of effects of surface organic groups on decomposition reactivity of electrolyte and formation process of surface passivating film.

Key words: Lithium ion battery, Carbon materials, Modification, Oxidation/reduction treatment

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