Cover Feature: Chemo‐Mechanical Model of SEI Growth on Silicon Electrode Particles (Batteries & Supercaps 2/2022)

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The Cover Feature illustrates the chemo-mechanical interplay of a silicon particle and its solid electrolyte interphase (SEI) shell. Lithium uptake expands the silicon particle and induces high elastoplastic deformation to the SEI, which eventually cause fracture. The presented model is based on a consistent thermodynamic coupling of electrochemistry and mechanics and identifies battery operation patterns responsible for accelerated SEI growth. More information can be found in the Article by B. Horstmann and co-workers.