electrolyte composition comprising a charge-transfer complex and a lithium salt with enhanced ionic conduction properties

Abstract

The present invention relates to an electrolyte composition comprising a lithium salt, and a charge transfer complex formed from a precursor of said charge transfer complex, electron acceptor, and a precursor of said charge transfer complex, electron donor, said lithium salt being (fluorosulfonyl)(trifluoromethanesulfonyl) lithium imidide LiFTFSI, said precursor of said charge transfer complex, electron acceptor, being benzoquinone or one of its derivatives, and said precursor of said charge transfer complex, electron donor, being hydroquinone or one of its derivatives.It also relates to a process for preparing said electrolyte composition, the use of said electrolyte composition in a rechargeable lithium-metal battery or for the preparation of a solid electrolyte for a rechargeable lithium-metal battery, a solid electrolyte for a rechargeable lithium-metal battery comprising said electrolyte composition, and a rechargeable lithium-metal battery comprising said solid electrolyte. Figure to be published: Figure 1.