| 摘要 |
Disclosed is a silicon-graphene based composite for a negative electrode material of a secondary battery. A production method of the silicon-graphene based composite comprises the following steps: a first step of producing a porous material by mixing silicon chloride and glycol which is divalent alcohols; a second step of producing silicon oxide, which is denoted by general formula, SiOx, in which the oxygen content is within the range of 0 < x < 2, by heat processing the porous material in the inert gas atmosphere; a third step of producing Si-SiOx composite powder by mixing the silicon oxide from the second step and metal silicon and making the silicon oxide solid-phase react with the metal silicon; and a fourth step of mixing the Si-SiOx composite powder from the third step with graphene powder, and heat processing the mixture in the inert gas atmosphere. |
