a chemo-mechanical model coupled with thermal effect on the hollow coreâshell electrodes in lithium-ion batteries
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ID: 221248
2017
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Abstract
Electrode is a key component to remain durability and safety of lithium-ion (Li-ion) batteries. Li-ion insertion/removal and thermal expansion mismatch may induce high stress in electrode during charging and discharging processes. In this paper, we present a continuum model based on COMSOL Multiphysics software, which involves thermal, chemical and mechanical behaviors of electrodes. The results show that, because of diffusion-induced stress and thermal mismatch, the electrode geometry plays an important role in diffusion kinetics of Li-ions. A higher local compressive stress results in a lower Li-ion concentration and thus a lower capacity when a particle is embedded another, which is in agreement with experimental observations. Keywords: Lithium-ion battery, Diffusion-induced stress, COMSOL, Chemo-mechanical, Electrode
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| Reference Key |
hu2017theoreticala
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|---|---|
| Authors | ;Bin Hu;Zengsheng Ma;Weixin Lei;Youlan Zou;Chunsheng Lu |
| Journal | Veterinary world |
| Year | 2017 |
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