The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
Jun. 11, 2009
Sébastien Patoux, Fontaine, FR;
Carole Bourbon, Saint Michel de Saint-Geoirs, FR;
Sébastien Martinet, Grenoble, FR;
Carole Pagano, Saint-Ismier, FR;
Lucas Sannier, Calais, FR;
Sébastien Patoux, Fontaine, FR;
Carole Bourbon, Saint Michel de Saint-Geoirs, FR;
Sébastien Martinet, Grenoble, FR;
Carole Pagano, Saint-Ismier, FR;
Lucas Sannier, Calais, FR;
Abstract
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.