Stress generation and fracture in lithium insertion materials

被引：618

作者：

Christensen, J ^{[1
]}

Newman, J ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2006年 / 10卷 / 05期

关键词：

D O I：

10.1007/s10008-006-0095-1

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A mathematical model that calculates volume expansion and contraction and concentration and stress profiles during lithium insertion into and extraction from a spherical particle of electrode material has been developed. The maximum stress in the particle has been determined as a function of dimensionless current, which includes the charge rate, particle size, and diffusion coefficient. The effects of pressure-driven diffusion and nonideal interactions between the lithium and host material have also been described. The model predicts that carbonaceous particles will fracture in high-power applications such as hybrid-electric vehicle batteries.

引用

页码：293 / 319

页数：27

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