中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (2): 24-28.

• 研究论文 • 上一篇    下一篇

锂/沸石电池的电化学行为

房艳   

  1. 中国科学院盐湖研究所, 西宁 810008
  • 收稿日期:1994-07-31 修回日期:1994-10-31 出版日期:1995-04-10 发布日期:1995-04-10

Electrochemical Behavior of Li/Zeolotes Cells

Fang Yan   

  1. Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008
  • Received:1994-07-31 Revised:1994-10-31 Published:1995-04-10 Online:1995-04-10

PDF

519

被引次数

1 | 1

摘要： 研究了沸石作为常温非水锂电池阴极材料的放电性能和循环特性.通过库仑滴定,三角波电位扫描,X-射线分析和红外光谱研究了锂/沸石电池的阴极反应机理,发现在x<3、4mol时,阴极上发生的是锂的嵌入反应.测得锂嵌入NaA型沸石生成LiNaA的嵌入自由能为-231kJ/mol(25℃).用电化学方法测得,常温下锂在LixNaA(x=0.17～0.69)中的化学扩散系数为1×10-9～1×10-10cm2/s数量级.

关键词: 锂/沸石电池, 插入, 电化学行为

Abstract: The discharge and cyclic voltammetry behavior of a variety of zeolites as cathodeof lithium secondary cell have been studied by coulometric titration,infrared absorptionspectrosoepy and X-ray diffractometry. It was found that in the course of discharge lithiumis electrochemically intercalated into compound at discharge depth x<3.4mol.The intercala-tion free energy of Li into NaA zeolite was found to be -231kJ/mol (25℃).The chemicaldiffusion coefficient of lithium in LixNaA(x=0.17～0.69)was determined to be about 1×10-9～1×10-10cm2/s at room temperature.

Key words: lithium-zeolite cell, intercalation, electrochemical behavior

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