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电化学(中英文) ›› 2004, Vol. 10 ›› Issue (1): 46-50. 

• 研究论文 • 上一篇    下一篇

锂离子电池碳负极中的相互作用研究

陈昌国,张洪敏,陈佳,余丹梅   

  1. 重庆大学化学化工学院,重庆大学化学化工学院,重庆大学化学化工学院,重庆大学化学化工学院 重庆 400044 ,重庆 400044 ,重庆 400044 ,重庆 400044
  • 收稿日期:2004-02-28 修回日期:2004-02-28 出版日期:2004-02-28 发布日期:2004-02-28

The Interaction in Doping Lithium of Carbonaneous Anode in Lithium Ion Battery

CHEN Chang-guo~, ZHANG Hong-min, CHEN Jia, YU Dan-mei   

  1. (College of Chemistry & Chemical Engineering,Chongqing University,Chongqing 400044,China
  • Received:2004-02-28 Revised:2004-02-28 Published:2004-02-28 Online:2004-02-28

摘要:  应用量子化学DV_Xα方法对储锂的单锂嵌套模型,LiC6模型,LiC2模型进行计算.分析电荷密度差值图发现锂离子在碳材料中有"吸"电子效应,其所得电子一般来自它所正对的苯环碳平面.计算表明,石墨插层化合物LiC6能够稳定存在,而LiC2则较难稳定存在.

关键词: 锂离子电池, 石墨插层化合物, DV_Xα方法

Abstract: The quantum chemical DV-X_α method was used to calculate the lithium-doped models from one-Li-dopant to LiC_6 and LiC_2. It was found that Li~+ has an tendency to attract electrons from the carbon plane through the C_6 hexagons lying above or below it by the graph of charge-density difference. It was shown that LiC_6 can exist steadily,while LiC_2 can not exist steadily.

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