H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/583 (2010.01) H01M 4/133 (2010.01)
Patent
CA 2548988
A process for the production of coated silicon/carbon particles comprising: providing a carbon residue forming material; providing silicon particles; coating said silicon particles with said carbon residue forming material to form coated silicon particles; providing particles of a carbonaceous material; coating said particles of carbonaceous material with said carbon residue forming material to form coated carbonaceous particles; embedding said coated silicon particles onto said coated carbonaceous particles to form silicon/carbon composite particles; coating said silicon/carbon composite particles with said carbon residue forming material to form coated silicon/carbon composite particles; and stabilizing the coated composite particles by subjecting said coated composite particles to an oxidation reaction. The coated composite particles will have a substantially smooth coating. The particles may be coated with multiple layers of carbon residue forming material.
L'invention porte sur un procédé de production de particules recouvertes de silicium/carbone, ce procédé consistant à: produire un matériau formant un résidu de carbone; produire des particules de silicium; enrober ces particules de silicium avec le matériau formant le résidu de carbone afin d'obtenir des particules de silicium enrobées; produire des particules d'un matériau carboné; enrober ces particules de matériau carboné avec le matériau formant un résidu de carbone afin d'obtenir des particules carbonées enrobées; appliquer ces particules de silicium enrobées sur les particules carbonées enrobées afin d'obtenir des particules composites silicium/carbone; enrober ces particules composites de silicium/carbone avec le matériau formant un résidu de carbone afin d'obtenir des particules composites silicium/carbone et stabiliser les particules composites enrobées en les soumettant à une réaction d'oxydation. Les particules composites enrobées ont un enrobage sensiblement lisse. Les particules peuvent être enrobées de plusieurs couches de matériau formant un résidu de carbone.
Chahar Bharat
Mao Zhenhua
Conocophillips Company
Ridout & Maybee Llp
LandOfFree
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