Modeling diffusion–induced stress on two-phase lithiation in lithium-ion batteries
|dc.identifier.citation||Wu, H. and Xie, Z. and Wang, Y. and Lu, C. and Ma, Z. 2018. Modeling diffusion–induced stress on two-phase lithiation in lithium-ion batteries. European Journal of Mechanics, A/Solids. 71: pp. 320-325.|
Masson SAS Capacity fade induced by chemo-mechanical degradation during charge-discharge cycles is the bottleneck in the design of high-performance batteries, especially high-capacity electrode materials. In this paper, a flexible sigmoid function is used to create the two-phase electrochemical lithiation profile, describing a sharp phase boundary that separates the pristine core from the lithi ated shell of an electrode particle. According to such a phase transition, an analytical solution of the stress evolution is obtained by introducing an electrochemical reaction layer into the plastic model. Finally, based on the theory of diffusion-induced stress and the energy principle, we determine the critical thickness of radius of a lithiated layer, at which fracture occurs.
|dc.title||Modeling diffusion–induced stress on two-phase lithiation in lithium-ion batteries|
|dcterms.source.title||European Journal of Mechanics, A/Solids|
|curtin.department||School of Civil and Mechanical Engineering (CME)|
|curtin.accessStatus||Fulltext not available|
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