▎ 摘　　要

NOVELTY - A composite material (A) comprises a carbon material (21) and a metal oxide layer (22) covering the surface of the carbon material. The coverage at which the carbon material is coated by the metal oxide layer is 20-80%. The metal oxide layer is scattered as island-type on the surface of the carbon material. USE - Composite material used as material for negative electrode for lithium-ion secondary battery (all claimed) e.g. all-solid-type lithium-ion secondary battery for electronic device such as notebook personal computer, mobile telephone, and motor vehicle. ADVANTAGE - The negative electrode comprising the composite material has excellent adhesiveness, capacity, and output characteristics even when the positive electrode layer, the solid electrolyte layer, and the negative electrode layer are laminated by low pressure without high pressure. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross sectional view of the structure of the composite material. Carbon material (21) Metal oxide layer (22) Composite material (A)