Overview of Electrolyte Additives for Lithium-Ion Batteries

Abstract

This article comprehensively reviews the research progress and application prospects of lithium - ion battery electrolyte additives. These additives play a crucial role in improving battery energy density, cycle life, and safety through interfacial chemical regulation. Key additives consist of film - formers (e.g., VC, DFEC), high - voltage stabilizers (e.g., LiDFOB), conductivity enhancers (e.g., γ - cyclodextrin), flame retardants, and overcharge preventatives. They sig-nifi-cantly enhance battery performance by forming stable CEI/SEI films, sup-press-ing electrolyte decomposition, and optimizing lithium deposition kinetics.