A variational framework to model diffusion induced large plastic deformation and phase field fracture during initial two-phase lithiation of silicon electrodes

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• 作者：Xiaoxuan Zhang ; Andreas Krischok ; Christian Linder ; ^{linder@stanford.edu}
• 关键词：Phase-field fracture ; Variational principles ; Two-phase lithiation ; Reaction-controlled diffusion ; Silicon electrodes ; Lithium-ion batteries
• 刊名：Computer Methods in Applied Mechanics and Engineering
• 出版年：2016
• 出版时间：1 December 2016
• 年：2016
• 卷：312
• 期：Complete
• 页码：51-77
• 全文大小：6278 K
• 卷排序：312

文摘

A variational based computational framework that combines multiple dissipative phenomena is proposed. Diffusion induced large plastic deformation and phase field fracture during two-phase lithiation of silicon electrodes is modeled. The effect of fracture energy release rate, electrode geometry, and geometric constraints on the fracture behavior of silicon electrodes is investigated.