Centre National De La Recherche Scientifique

Centre National Detudes Spatiales

Universitè De Montpellier

Universite De Montpellier Ii

Florent Robert

Jean-Claude Jumas

Patrick Willmann

Josette Olivier-Fourcade

Pierre-Emmanuel Lippens

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&#x2266;c&#x2266;10; b is such that 1&#x2266;b&#x2266;4; and a=(2c&#x2212;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.

Negative electrode composite material, production method, negative electrode and lithium-ion battery

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Pardailhan, France

Florent Robert