HARD CARBON MATERIAL, SECONDARY BATTERY, AND ELECTRIC DEVICE

A hard carbon material used as a component of a negative electrode material. The hard carbon material has a porous structure, an average pore diameter of the hard carbon material is D nm, a cumulative pore volume up to the average pore diameter of the hard carbon material is B cm/g, a micropore volume of the hard carbon material is A cm/g, and a total pore volume of the hard carbon material is C cm/g, where 1.00