Unveiling the Formation and Evolution of the Cathode-Electrolyte Interphase in Lithium-Sulfur Batteries.

ABSTRACT: Lithium-sulfur batteries (LSBs) present high theoretical energy density, but their commercial viability is limited due to poor cyclability, primarily resulting from the shuttle effect. The formation and stability of the cathode-electrolyte interphase (CEI) are crucial for suppressing the shuttle effect and enhancing electrochemical reversibility. However, the CEI formation and evolution mechanism in LSBs remains unexplored. In this context, herein, the first real-time investigation of the CEI using background-subtracted in situ Fourier-transform infrared (FTIR) spectroscopy is presented. The resulting FTIR spectra directly revealed electrolyte species consumption and reduced species' emergence. Although these findings do not provide detailed compositional information about the CEI, the in

SUBMITTER: Machado Amaral M 

PROVIDER: S-EPMC12904020 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature