Advanced Research on Electrolyte for Regulating SEI in High Performance LMBs

Abstract

Rechargeable lithium metal batteries (LMBs) with lithium anode have attracted wide attention as next-generation energy storage due to the high specific energy density and wide working voltage. Electrolytes not only bear the responsibility of transporting lithium ions, but also play an important role in the formation of solid electrolyte interphase (SEI) on the lithium anode surface, which effects the Coulombic efficiency of LMBs. Up to now, extensive research of electrolyte modification has been devoted to adjusting the structure and composition of SEI for the purpose of inhibiting the growth of dendrites in rechargeable lithium anode. In order to guide the further research of electrolyte, this paper summarizes the latest advances of the electrolytes for lithium metal anode with the emphasis to build stable SEI on the lithium anode surface. Finally, a perspective for the development direction of LMBs is proposed, which is helpful to guide researchers in desiging excellent LMBs in the future.