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:
Jul. 16, 2013
Filed:
Nov. 19, 2008
Stéphane Levasseur, Brussels, BE;
Cécile Tessier, Bruges, FR;
Josette Olivier-fourcade, Jacou, FR;
Laure Monconduit, Jacou, FR;
Costana Ionica-bousquet, Montpellier, FR;
Claire Villevieille, Marguerittes, FR;
Michèle Van Thournout, Lier, BE;
Stéphane Levasseur, Brussels, BE;
Cécile Tessier, Bruges, FR;
Josette Olivier-Fourcade, Jacou, FR;
Laure Monconduit, Jacou, FR;
Costana Ionica-Bousquet, Montpellier, FR;
Claire Villevieille, Marguerittes, FR;
Michèle Van Thournout, Lier, BE;
Umicore, Brussels, BE;
Centre National de la Recherche Scientifique, Paris, FR;
Saft Groupe S.A., Bagnolet, FR;
Universite Montpellier 2, Montpellier, FR;
Abstract
An active material for a lithium battery electrode comprises a phase having the formula LiCTiFeMM'O, in which M and M′ are metal ions of groups oftohaving an ionic radius betweenandÅ in an octahedral environment, v, w, x, y, z and α being associated by the relationships:α=−v+w−x−ny−n′z, with n and n′ being the respective formal degrees of oxidation of M and M′; −≦v≦; y+z>; x+y+z=w; and<w≦; and wherein at least part of the lithium is substituted by carbon according to the relationship<c(+v)/The invention also includes a method for synthesizing the active material which comprises mixing and grinding the precursor compounds containing the metal components, carbon and oxygen; heating the mixture in an inert atmosphere at a temperature ofto° C. in order to make a ceramic phase; and rapidly cooling the ceramic phase to produce the active material.