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:
Nov. 22, 2011
Filed:
Jul. 28, 2005
Negative electrode composite material, production method, negative electrode and lithium-ion battery
Jean-claude Jumas, Jacou, FR;
Pierre-emmanuel Lippens, Saint-Aunes, FR;
Josette Olivier-fourcade, Jacou, FR;
Florent Robert, Pardailhan, FR;
Patrick Willmann, Montgiscaro, FR;
Jean-Claude Jumas, Jacou, FR;
Pierre-Emmanuel Lippens, Saint-Aunes, FR;
Josette Olivier-Fourcade, Jacou, FR;
Florent Robert, Pardailhan, FR;
Patrick Willmann, Montgiscaro, FR;
Abstract
A negative electrode material, a method for producing this material, and to a negative electrode and a lithium-ion battery comprising this material are described. The material comprises an active phase consisting of a material M based on Al, Si, Sn, Sb or a mixture thereof, and a support phase consisting of a material XaYbOc, where: O is an oxygen; Y is a cation with oxidation degree m=3, 4, 5 or 6; X is a cation with oxidation degree d=1, 2, 3, 4 or 5, X ensuring the electroneutrality of XaYbOc; and where: c is such that 2≦c≦10; b is such that 1≦b≦4; and a=(2c−bm)/d. An interface of mixed composition exists between the XaYbOc material and the active phase M, the interface consisting of the elements M, X, Y and O.