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

Umicore

Jean-Francois Colin

David Peralta

Yagmur Celasun

Vincent Caldeira

Jean-Sebastien Bridel

Tim Van Rompaey

Agnes Brun

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

Lithiated material

The present invention relates to an electrochemically active Si-carbon composite particulate material, wherein silicon nanoparticles are entrapped in a carbon matrix material based on at least micronic graphite particles, reduced graphene platelets and amorphous carbon.

Silicon-carbon composite particulate material

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Grenoble, France

Jean-Francois Colin