物理化学学报 >> 1998, Vol. 14 >> Issue (05): 477-480.doi: 10.3866/PKU.WHXB19980519

研究简报 上一篇    

判断聚对苯基热解碳嵌锂容量的简单方法

周恒辉, 陈继涛, 慈云祥, 刘昌炎   

  1. 北京大学化学与分子工程学院，北京 100871
  • 收稿日期:1997-09-26 修回日期:1997-11-15 发布日期:1998-05-15
  • 通讯作者: 慈云祥

A Simple Method to Evaluate Lithium Insertion Capacity of PPP-based Carbon

Zhou Heng-Hui, Chen Ji-Tao, Ci Yun-Xiang, Liu Chang-Yan   

  1. College of Chemistry Molecular Engineering,Peking University,Beijing 100871
  • Received:1997-09-26 Revised:1997-11-15 Published:1998-05-15
  • Contact: Ci Yun-Xiang

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关键词: 聚对苯基碳, 锂离子电池, 可逆嵌锂容量, 红外光谱

Abstract:

 The method to evaluate the reversible lithium insertion capacity (Qre) has been studied using poly (p-phenylence) (PPP) heat-treated at 550 1000 ℃ in inert gas atomsphere by H/C atomic ratio and FTIR measures. The H/C atomic ratio and Qre decreased with increasing heat-treament temperature. The absorption ratio of 1020cm-1 band to the 1440cm-1 band (Ra) is directly related to the Qre of carbon samples. The samples with R. >1-1 and without 807cm-1 peak tend to have high Qre (>372 mA.h-g-1). The reversible capacity for Li+ ion insertion decrease as Ra decreases.

Key words: PPP-dericed carbon, Lithium ion cell, Reversible lithium insertion capacity, FTIR