2D Raman correlation analysis of formation mechanism of passivating film on overcharged LiCoO2 electrode with additive system.

Highlights: [•] Effect of vinylene carbonate (VC) on the electrochemical performance of the LiCoO2 cathode. [•] Solid electrolyte interface (SEI) film formation on the LiCoO2 cathode under overcharge conditions. [•] Reduced capacity fading in VC-containing electrolyte. [•] Electrochemical reaction kinetics in cathode/electrolyte interface with and without VC. [ABSTRACT FROM AUTHOR]