Role of Dual-Redox Couples in Antiperovskite Li₂FeSeO Cathodes.

ABSTRACT: In recent years, cathode materials for Li-ion batteries with antiperovskite (AP) structure have attracted growing interest due to their high capacity, chemical flexibility, low cost, and relatively simple synthesis. Among AP cathodes, Li₂FeSeO has emerged as a promising candidate, demonstrating high capacity and good cycling stability. However, the lack of fundamental knowledge of the operating mechanism of AP cathodes significantly impedes efforts for further improvement. In this work, the redox mechanism and structural evolution of Li₂FeSeO cathode material during electrochemical cycling are revealed through a combination of operando and ex situ X-ray diffraction, X-ray absorption spectroscopy, and Raman spectroscopy coupled with density functional the

SUBMITTER: Dai T 

PROVIDER: S-EPMC12659018 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature