Patent ID: 9742003
Date: 2017-08-22
CPC Classifications: C01B,H01M,Y02E

Claim:
1. A method of producing a silicon/carbon composite material comprising the following successive steps: providing a silicon/polymer composite material from silicon particles covered with a carbonaceous polymer compound, which compound is a precursor of carbon and able to be cross-linked, performing at least partial cross-linking of the polymer of the silicon/polymer composite material so as to obtain a cross-linked silicon/polymer composite material and avoid creep of the polymer of the silicon/polymer composite material, the polymer having a cross-linking rate greater than or equal to 50%, and pyrolysing the cross-linked silicon/polymer composite material while avoiding creep until said silicon/carbon composite material is obtained, wherein the carbonaceous polymer compound is chosen from the group consisting of polyvinylic alcohol (PVA), polyvinyl butyral (PVB), polyvinyl formal (PVF), and polyacrylonitrile (PAN).