US 11,056,691 B2
Silicon-carbon composite particulate material
Jean-Sebastien Bridel, Seoul (KR); Tim Van Rompaey, Leuven (BE); Vincent Caldeira, Grenoble (FR); Agnes Brun, Champagnier (FR); Jean-Francois Colin, Meylan (FR); and Cedric Haon, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR); and UMICORE, Brussels (BE)
Appl. No. 15/746,188
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR); and UMICORE, Brussels (BE)
PCT Filed Jul. 19, 2016, PCT No. PCT/EP2016/067168
§ 371(c)(1), (2) Date Jan. 19, 2018,
PCT Pub. No. WO2017/013111, PCT Pub. Date Jan. 26, 2017.
Claims priority of application No. 15306176 (EP), filed on Jul. 20, 2015.
Prior Publication US 2018/0241037 A1, Aug. 23, 2018
Int. Cl. H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/134 (2010.01); H01M 4/1393 (2010.01)
CPC H01M 4/587 (2013.01) [H01M 4/0471 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 10/0525 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electrochemically active Si-carbon composite particulate material, wherein silicon nanoparticles are entrapped in a carbon matrix material, the carbon matrix material comprising:
micronic graphite particles,
reduced graphene platelets and
amorphous carbon, wherein:
the electrochemically active Si-carbon composite particulate material comprise particles having a distribution of size with 1 μm<D10<80 μm, 5 μm<D50<300 μm and 10 μm<D90<700 μm and a BET ranging from 2 to less than 26.7 m2/g;
the micronic graphite particles and reduced graphene platelets in a weight ratio graphite/graphene from 1.7 to 14; and
the electrochemically active Si-carbon composite particulate material comprises Si ranging from 13 to 30% by weight of its total weight.