Patent ID: 9728777
Date: 2017-08-08
CPC Classifications: H01M,Y02E

Claim:
1. A method of producing graphene-doped silicon nano powder having a silicon particle size smaller than 100 nm, said method comprising: (a) mixing a graphene material with a silicon precursor to form a silicon precursor/graphene nano composite, wherein said graphene material is selected from pristine graphene, graphene fluoride, graphene bromide, graphene iodide, chemically functionalized graphene, or a combination thereof, wherein pristine graphene is a non-oxidized graphene that is produced without chemical intercalation or oxidation; (b) mixing the silicon precursor/graphene nano composite with a quantity of magnesium; (c) converting said silicon precursor/graphene nano composite to form a mixture of graphene-doped silicon and a reaction by-product by a chemical or thermal reduction reaction; and (d) removing the reaction by-product from the mixture to obtain said graphene-doped silicon nano powder.