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

Centre National De La Recherche Scientifique

David Peralta

Carole Bourbon

Sébastien Martinet

Jean-François Colin

Thibaut Gutel

Jean-Francois Colin

Yagmur Celasun

Loïc Simonin

Jérémie Fondard

Frédéric Fabre

Pierre-Etienne Cabelguen

Mathieu Lions

Marlène Chapuis

Pierre Feydi

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

A method for producing a lithium-containing oxide comprising one or more metal elements, which can be used as an active material for an electrode, for example a positive electrode for a lithium battery, the method comprising the following successive steps: a) a step of bringing at least one coordination polymer into contact with a lithium source, the coordination polymer comprising the other metal element(s) interconnected by organic ligands; b) a step of calcining the mixture resulting from step a).

Method for producing a lithium-containing metal oxide that can be used as an active material for a positive electrode

A process for selectively extracting cobalt from a composition comprising cobalt and one or more other metal elements, wherein the process comprises the following steps: a) a step of forming a precipitate consisting of a coordination complex comprising cobalt, by bringing the solution into contact with at least one aromatic compound comprising at least two nitrogen atoms in its ring; b) a step of recovering the precipitate.

Process for extracting cobalt from a solution comprising, in addition to cobalt, one or more other metal elements

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

A process for synthesizing a material, includes: (a) providing a plurality of powders including at least one lithiated powder including lithium, at least one TM powder including, for more than 95.0% of its mass, a transition metal chosen from titanium; cobalt, manganese, nickel, niobium, tin, iron and mixtures thereof, and at least one chalcogen powder including, for more than 95.0% of its mass, a chalcogen element chosen from sulfur, selenium, tellurium and mixtures thereof, (b) preparing a particulate mixture by mixing all the powders of the plurality or by mixing one of the powders of the plurality with a milled material obtained by; milling a particulate assembly formed by mixing at least two of the other powders of the plurality, and (c) milling the particulate fixture to form the material.

Synthesis method

A material of formula LiTi(AS)wherein A is a metalloid element chosen from selenium, tellurium and mixtures thereof, and the stoichiometric coefficients a, b, c and x are such that

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Grenoble, France

David Peralta