| abstract |
Provided are a composite material suitable for an electrode of an electricity storage device, particularly a lithium or lithium ion secondary battery, an electrode active material made of the composite material, an electrode using the active material, and an electricity storage device including the electrode. SOLUTION: (A) a crosslinkable group-containing organic compound and (B) a cured product obtained by crosslinking reaction of a silicon-containing compound capable of crosslinking the crosslinkable group-containing organic compound, and (C) a carbon-based compound A surface carbon-coated silicon-containing carbon-based composite material obtained by a production method including a step of firing a mixture of substances is used as an electrode active material. [Selection figure] None |