锂电池基础科学问题(Ⅵ)——离子在固体中的输运

被引:11
作者
郑浩
高健
王少飞
李泓
机构
[1] 中国科学院物理研究所
关键词
离子; 电导率; 输运; 锂离子电池; 缺陷; 扩散;
D O I
暂无
中图分类号
TM912 [蓄电池];
学科分类号
摘要
充放电过程中,锂离子需要在电极活性材料、电极与液态电解质接触界面产生固体的电解质层,全固态电池中的固体电解质以及导电添加剂、黏结剂、活性颗粒形成的固固界面传输。一般而言,固相内部及固相之间的离子传输是电池动力学过程中相对较慢的步骤,因此离子在固体中的传输是锂电池材料研究的重要基础科学问题。本文小结了固体离子学基础知识中关于离子在固体中的传输机制、驱动力、影响离子电导率的几种因素等方面的内容,简介了锂离子在正极、负极、固态电解质中的输运特性,讨论了内源锂和外源锂输运特性的差异以及尺寸效应对于离子输运性质的影响。
引用
收藏
页码:620 / 635
页数:16
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