▎ 摘　　要

NOVELTY - A layered-graphene oxide is subjected to heat treatment to remove oxygen and oxygen-containing functional group from layered-graphene oxide and layered-graphene oxide is restored into layered-graphene. Then, the interlayer space of restored layered-graphene is made narrower than the interlayer space of layered-graphene oxide which is not heat-treated, to obtain hydrogen storage medium. USE - Manufacture of hydrogen storage medium (claimed). ADVANTAGE - The hydrogen storage medium having excellent hydrogen storage ability is manufactured by simple method.