Advances in Anion Chemistry in the Electrolyte Design for Better Lithium Batteries

Abstract

Highlights The impact of anions on the interface is summarized, including forming a solid electrolyte interphase (SEI), repairing the damaged SEI, and modulate electric double layer. The influence of anions on the solvation structure is presented, including enhancing desolvation process of the Li-ions and the antioxidant property of the electrolyte. This review also emphasizes the important role of anions in enhancing battery safety through their flame-retardant properties, as well as their impact on energy density and power density by altering reaction pathways and accelerating reactions.

Keywords

• Anion chemistry
• Electrolyte
• Interface
• Solvation structure