Engineering durable interphases for high-voltage Li-ion batteries under thermal stress.

ABSTRACT: Achieving stable cycling of high-voltage cathodes at elevated temperatures remains a critical challenge due to intensified interfacial side reactions and the accelerated dissolution of the cathode electrolyte interphase (CEI). In this work, based on theoretical calculations, Li₂SO₃ with desirable thermal stability and adhesiveness is proposed as a thermally stable binding agent between the selected CEI components (LiF and Li₃PO₄, where Li₃PO₄ facilitates fast Li⁺ transport and thermal stability, while LiF serves as a stable, electron-blocking framework) to prevent undesirable dissolution. This is achieved by leveraging electrolyte engineering to modulate the solvation environment and promote the in-situ for

SUBMITTER: Chen S 

PROVIDER: S-EPMC12485966 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature