Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique Et Aux Energies

Umicore

Jean-François Colin

Carole Bourbon

Sébastien Martinet

Yvan Reynier

David Peralta

Lucienne Buannic

Nathalie Herlin-Boime

Jean-Sébastien Bridel

Lise Daniel

Thibaut Gutel

Willy Porcher

Cédric Haon

Vincent Caldeira

Yagmur Celasun

Tim Van Rompaey

Valérie Pralong

Florence Masse

Jérémie Fondard

Barbara Le Roux

Marlène Rey

Quentin Jacquet

Agnès Brun

A method for preparing a positive electrode active material for a lithium battery consisting of a lithiated oxide comprising titanium and optionally one or more other metal elements comprising the following successive steps: a) a step of forming a precipitate comprising titanium and the optional other metal element(s) by contacting a titanium coordination complex and, if necessary, at least one salt of the other metal element(s) with an aqueous medium; b) a step of recovering the precipitate thus formed; c) a step of calcining the precipitate in the presence of a lithium source.

Method for preparing a positive electrode active material of the lithiated metal oxide type comprising titanium

Positive electrode material for a lithium battery comprises a lithiated metal layered oxide comprising metal elements arranged in layers of metal cations and lithium arranged in interlayers of lithium cations and, in part, in the layers of metal cations, the oxide has a stack arrangement 02 and corresponds to the formula (I): Li(a+b)NicMndCoeMfOg (I) wherein: *a represents the proportion of lithium in the interlayers, 0&#x3c;a&#x3c;1; *b represents the proportion of lithium in the layers of metal cations, 0&#x3c;b&#x3c;&#x2153;; *c, d, e and f are between 0 and 1 and b+c+d+e+f=I; *1.9&#x3c;g&#x3c;2.1; *when f&#x2260;0, M is one or more of Al, Fe, Ti, Cr, V, Cu, Mg, Zn, Na, K, Ca, Sc; wherein the oxide is coated with an oxide of the formula (II): MnhM'iO2 (M) wherein: *0&#x3c;h&#x2264;1.5, preferably h=1; *M&#x2032; is one or more of Ni, Al, Fe, Ti, Cr, V, Cu, Mg, Zn, Na, K, Ca, Sc; *0&#x2264;i&#x2264;1.5.

Positive electrode material based on a lithiated layered oxide coated, in whole or in part, with another manganese-based oxide, and method for the preparation thereof

An electrode material of formula LiNiTiNbOwhere:

Cathode material for Li-ion batteries

The present invention relates to an electrode material of formula LiMnCoBO, where 0&#x3c;&#xd7;&#x3c;1, and to a method of preparing the same comprising independently preparing a manganese borate and a cobalt borate and then simultaneously thermally treating them under an inert atmosphere, in the presence of a precursor of lithium and of boric acid.

[object Object]

A lithium-free mixed titanium and niobium oxide, including at least one trivalent metal M, and having a molar ratio Nb/Ti greater than 2, said oxide being selected from the group including the material of formula (I) and the material of formula (II):MTiNbO&#x2003;&#x2003;(I) where 0&#x3c;&#x2266;0.20; &#x2212;0.3&#x2266;&#x3b4;&#x2266;0.3;MTiNbO&#x2003;&#x2003;(II) where 0&#x3c;&#x2266;0.40; &#x2212;0.3&#x2266;&#x3b4;&#x2266;0.3.

Mixed oxide of titanium and niobium comprising a trivalent metal

A method of preparing a titanium and niobium mixed oxide including the steps of: preparing a titanium and niobium mixed oxide in amorphous form by a solvothermal treatment of at least one titanium precursor and of at least one niobium precursor, mechanically crushing the titanium and niobium mixed oxide obtained at the end of the solvothermal treatment and calcinating the mixed oxide obtained after crushing.

Method for preparing a titanium and niobium mixed oxide by solvothermal treatment; electrode and lithium accumulator comprising said mixed oxide

Growing community of inventors

Meylan, France

Jean-François Colin