Commissariat a L'energie Atomique Et Aux Energies Alternatives

Centre National De La Recherche Scientifique

Renault S.a.s.

Electricite De France

Université De Picardie Jules Verne

Lucas Sannier

Carole Bourbon

Sébastien Martinet

Sébastien Patoux

Carole Pagano

The invention relates to a positive electrode/electrolyte pair for lithium batteries operating at a voltage above 4.2 V versus Li+/Li. The electrolyte of the lithium battery used in the invention includes at least a first additive chosen from optionally substituted, cyclic or acyclic, carboxylic or dicarboxylic anhydrides and carboxylic or dicarboxylic acids, and mixtures thereof, and optionally a second additive which is a lithium salt, the total content of additive(s) being greater than or equal to 0.01% by weight and less than or equal to 30% by weight, relative to the total weight of electrolyte, and the positive electrode is made of a material having a spinel structure. The lithium batteries of the invention are applicable in particular in the field of portable equipment, such as telephones, computers, camcorders, cameras and tooling.

Non-aqueous electrolyte for a high-voltage lithium battery

Growing community of inventors

Calais, France

Lucas Sannier