Centre National De La Recherche Scientifique

Universitè De Montpellier

Umicore

Saft Groupe Sa

Hutchinson

Université Montpellier 2 Sciences Et Techniques

Universite De Montpellier II

Laure Monconduit

Michèle Van Thournout

Cécile Tessier

Josette Olivier-Fourcade

Claire Villevieille

Jean-Marie Tarascon

Philippe Sonntag

David Ayme-Perrot

Jean-Claude Jumas

Stéphane Levasseur

Ali Darwiche

Francoise Morato-Lallemand

Philippe Girard

Julien Fullenwarth

Lorenzo Stievano

Moulay Tahar Sougrati

Costana Ionica-Bousquet

Frederic Gillot

Philippe Antitomaso

A method for preparing a material having an Sn:Sb intermetallic phase includes at least the steps of mixing chemical elements Sn and Sb, and treating the mixture with microwaves. An electrode is manufactured by using the material having an Sn:Sb intermetallic phase; forming the material in a form of powder; mixing the powder with carbon, a binder and a solvent to form an ink; coating a current collector with the ink; and drying the electrode.

Method for manufacturing an Sn:Sb intermetallic phase

Precursor compounds of sodium alloy(s), for use as negative electrode active material in a sodium-ion battery, as well as to a negative electrode have the precursor compound of sodium alloy(s), as well as a sodium-ion battery having a negative electrode of this kind.

Use of novel compounds as negative electrode active material in a sodium-ion battery

The invention relates to active material for the negative electrode of secondary rechargeable lithium batteries, wherein the active material is based on doped or undoped carbon-bearing lithium titanium ramsdellite oxide with general formula LiTiOor LiTiO. The active material comprises a carbon substituted ramsdellite phase having a general formula LC&#x2014;TiO, with 0.1&#x3c;c&#x3c;0.5, and more than 0.1 mol % of spinel phase having a general formula Li+xTiOwith 0&#x3c;x&#x3c;0.33.

High voltage negative active material for a rechargeable lithium battery

An active material for a lithium battery electrode comprises a phase having the formula LiCTiFeMM'O, in which M and M&#x2032; are metal ions of groups oftohaving an ionic radius betweenand&#x212b; in an octahedral environment, v, w, x, y, z and &#x3b1; being associated by the relationships:&#x3b1;=&#x2212;v+w&#x2212;x&#x2212;ny&#x2212;n&#x2032;z, with n and n&#x2032; being the respective formal degrees of oxidation of M and M&#x2032;; &#x2212;&#x2266;v&#x2266;; y+z&#x3e;; x+y+z=w; and&#x3c;w&#x2266;; and wherein at least part of the lithium is substituted by carbon according to the relationship&#x3c;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&#xb0; C. in order to make a ceramic phase; and rapidly cooling the ceramic phase to produce the active material.

Negative electrode material for Li-ion batteries

The invention relates to a method for producing an anode for a lithium-ion battery, said anode comprising a current collector formed from a transition metal M in the form of a foam and an active material comprising a binary phosphide of said metal M, said active material corresponding to the formula MPin which 1&#x2266;x&#x2266;4. The method consists in subjecting the metal M foam to the action of phosphorus vapor at a temperature between 300&#xb0; C. and 600&#xb0; C., the phosphorus being present in a proportion which differs by at most 10% from the stoichiometric proportion relative to the metal M. The invention also relates to an anode for a lithium-ion battery, and to a lithium-ion battery comprising such an anode.

Method for production of an anode for a lithium-ion battery

Growing community of inventors

Jacou, France

Laure Monconduit