Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 10, Issue 5, Pages 293-319Publisher
SPRINGER
DOI: 10.1007/s10008-006-0095-1
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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.
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