Phase-Transformation Wave Dynamics in LiFePO4
Phase-Transformation Wave Dynamics in LiFePO4
复制标题
LiFePO4 中的相变波动力学
DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
M. Bazant
中科院分区:
文献类型:
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作者:
Damian N. Burch;G. Singh;G. Ceder;M. Bazant
A general continuum model has recently been proposed for the dynamics of ion intercalation in a single crystal of rechargeable-battery electrode materials [1]. When applied to strongly phase-separating, highly anisotropic materials such as LiFePO4, phase-transformation waves are predicted between the lithiated and unlithiated portions of a crystal. In this paper, we extend the analysis of the wave dynamics, and we describe a new mechanism for current capacity fade through the interactions of these waves with defects in the material.