Softening by electrochemical reaction-induced dislocations in lithium-ion batteries

Ma, Z.; Xie, Z.; Wang, Y.; Lu, Chunsheng

doi:10.1016/j.scriptamat.2016.08.032

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Authors

Ma, Z.

Xie, Z.

Wang, Y.

Lu, Chunsheng

Date

2017

Type

Journal Article

Metadata

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Citation

Ma, Z. and Xie, Z. and Wang, Y. and Lu, C. 2017. Softening by electrochemical reaction-induced dislocations in lithium-ion batteries. Scripta Materialia. 127: pp. 33-36.

Source Title

Scripta Materialia

DOI

10.1016/j.scriptamat.2016.08.032

ISSN

1359-6462

School

Department of Mechanical Engineering

URI

http://hdl.handle.net/20.500.11937/2663

Collection

Curtin Research Publications

Abstract

© 2016 Acta Materialia Inc. Electrodes softening during lithium insertion may result in degeneration of their electrochemical performances. In this paper, based on a coupling multiple-slip crystal plasticity formulation with three (i.e., statistically-stored, geometrically-necessary and electrochemical reaction-induced) dislocation densities, a relationship is built up between hardness and the state of charge for electrodes in lithium-ion batteries, which can take into account the indentation size effect during charging and discharging progresses. It is shown that the relationship is helpful in monitoring the state of charge and providing new avenues for applications of high-performance rechargeable batteries.