Stabilizing the electrode-electrolyte interface for high-voltage Li‖LiCoO₂ cells using dual electrolyte additives.

ABSTRACT: Rechargeable Li‖LiCoO₂ batteries are attractive due to their high energy density. However, the growth of lithium dendrites and the degradation of cathode at high potential hinder their practical application. Herein, we propose an advanced fluorinated carbonate-based electrolyte consisting of trans-4,5-difluoro-1,3-dioxolan-2-one (DFEC) and tri-(trimethylsilyl) phosphite (TMSPi) as dual additives to construct a stable interface on both the anode and cathode. The results show that DFEC can promote the formation of a stable solid-electrolyte-interface (SEI) layer on the lithium anode to inhibit the growth of dendrites. Additionally, TMSPi is conducive to the production of an inorganic-rich cathode-electrolyte interface (CEI) layer on the LiCoO₂ cathode to inhibit

SUBMITTER: Ding J 

PROVIDER: S-EPMC12216582 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature