Carbon material, electrode sheet for capacitor, and capacitor

Abstract

There is provided a carbon material that can increase both the capacitance and the output characteristic of a capacitor. A carbon material for use in an electrode material of a power storage device, comprising a first carbon material having a graphene layered structure, wherein, when an X-ray diffraction spectrum of a mixture of the carbon material and a silicon powder having a volume average particle size of 7.5±2.5 μm in a mixing ratio of 1:1 is determined, a ratio a/b between a height of a peak assigned to the graphene layered structure, a, and a height of a peak assigned to silicon, b, is 0.05 or more and 0.4 or less.

Dependencies are inferred from the claim text.