Chemo-mechanical failure mechanisms of the silicon anode in solid-state batteries.

ABSTRACT: Silicon is a promising anode material due to its high theoretical specific capacity, low lithiation potential and low lithium dendrite risk. Yet, the electrochemical performance of silicon anodes in solid-state batteries is still poor (for example, low actual specific capacity and fast capacity decay), hindering practical applications. Here the chemo-mechanical failure mechanisms of composite Si/Li₆PS₅Cl and solid-electrolyte-free silicon anodes are revealed by combining structural and chemical characterizations with theoretical simulations. The growth of the solid electrolyte interphase at the Si|Li₆PS₅Cl interface causes severe resistance increase in composite anodes, explaining their fast capacity decay. Solid-electrolyte-free silicon anodes s

SUBMITTER: Huo H 

PROVIDER: S-EPMC10990934 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature