Lithium-rich manganese-based oxide (LRMO) materials hold great potential for high-energy-density lithium-ion batteries (LIBs) but suffer from severe voltage decay and capacity fading. Herein, we report the construction of LiF-rich solid electrolyte interphase on LRMO through a straightforward ball-milling and electrochemical approach, which exhibits remarkable structural stability and enhanced electrochemical performance.
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