Critical grain size for microcracking during lithium insertion

被引：75

作者：

Wolfenstine, J ^{[1
]}

机构：

[1] USA, Res Lab, AMSRL, SE,DC, Adelphi, MD 20783 USA

来源：

JOURNAL OF POWER SOURCES | 1999年 / 79卷 / 01期

关键词：

microcracking; grain size; Li-alloys; anodes;

D O I：

10.1016/S0378-7753(99)00052-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A critical grain size below which microcracking does not occur based on volume changes as a result of Li charging into brittle Li-alloys was derived. The predicted critical grain size is less than the unit cell size for a majority of single-phase materials. This suggests that decreasing the particle and/or grain size is not a practical solution to solve the mechanical instability problem of Li-alloys. (C) 1999 Elsevier Science S.A. All rights reserved.

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收藏

页码：111 / 113

页数：3

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