Alcatel

Saft

Saft Groupe Sa

Jean-Paul Peres

Andre Lecerf

Stephane Gillot

Jean-Marie Tarascon

Stanislas Galaj

Pere Roca I Cabarrocas

Philippe Biensan

Mathieu Morcrette

Claudette Audry

Cécile Tessier

Dominique Larcher

Erwan Dumont

Florent Fischer

Frederic Chouquais

Juliette Saint

Marielle Marugan

Phillippe Biensan

Cl&eacute;mence Siret

Frédéric Castaing

Michel Ulldemolins

André Lecerf

Stéphane Gillot

Frédéric Chouquais

The subject of the invention is an anode material of the silicon-carbon composite type, for a lithium cell, having a high mass capacity and good cycling stability. This material is obtained by a preparation method comprising the steps consisting of: The invention also proposes a lithium cell containing at least one anode the material of which contains the nanocomposite material produced by this method.

Nanocomposite material for the anode of a lithium cell

A compound for use as active material of a positive electrode of a lithium-ion cell. This compound has an average discharge voltage above 4.5V in relation to the Li+/Li couple of approximately 4.7V. The compound includes: a) a spinel-type crystalline phase of formula LiNiMnMnMOin which elements Ti and Al, or a mixture of these; 0.8&#x3c;a&#x3c;1.3; 0&#x3c;x&#x2266;0.15; 0&#x3c;y&#x2266;0.15; b) a cubic crystalline phase of formula LiNiO in which 0&#x2266;t&#x2266;1; and c) a rhomboedric crystalline phase of formula LiNiOin which 0&#x2266;z&#x2266;1.

Insertion compound able to be used as cathodic active material of a lithium rechargeable electrochemical cell

The present invention provides a positive electrode for a lithium rechargeable electrochemical cell, the electrode comprising an aluminum current collector and a paste containing both an electrochemically active material and a binder suitable for being put into solution or suspension in water, wherein the surface of said collector is covered in a protective layer constituted by at least one component selected from an oxalate and a compound of at least one element selected from silicon, chromium, and phosphorus.

Positive electrode for a lithium rechargeable electro-chemical cell having an aluminum current collector

Active cathode material for a lithium rechargeable cell

Growing community of inventors

Eysines, France

Jean-Paul Peres