Modeling and Simulation of Chemo-Elasto-Plastic Deformation in Silicon Battery Particles and Surrounding Solid-Electrolyte Interphase

The core message of this article is to investigate the influence of different elastic strain definitions on the numerical simulation of the chemo-mechanical coupling between silicon battery particles and their surrounding solid-electrolyte interphase (SEI). The authors demonstrate that the choice of the elastic strain definition, particularly the logarithmic Hencky strain, is crucial for the stability and success of the numerical simulation, especially when incorporating plastic deformation in the SEI.