Hydrogen storage material and hydrogen storage apparatus

Abstract

Two types of less expensive and lightweight hydrogen storage materials are provided. One of them is a carbon material for absorbing hydrogen, exhibiting a specific surface area being 3,000 m2/g or more, and having pores, a pore mode diameter of the pores, measured by the BJH method, being from 1 nm to 2 nm. The present carbon material for absorbing hydrogen is such that the hydrogen storage capacity at ordinary temperature is large. The other one of the hydrogen storage materials is a carbon-based hydrogen storage material which includes a carbon material, exhibiting a specific surface area, being 1,000 m2/g or more, and a bulk density, being from 0.4 g/cm3 or more to 1 g/cm3 or less. The present carbon-based hydrogen storage material is such that the hydrogen storage capacity per unit volume, is large. Moreover, to provide a hydrogen storage apparatus whose hydrogen storage capacity per unit volume is large. The hydrogen storage apparatus is constituted so as to include a container and a hydrogen absorbing material accommodated in the container, and the hydrogen absorbing material is arranged to be one which includes a porous carbon material whose specific surface area is 1,000 m2/g or more, and a hydrogen absorbing alloy.

Dependencies are inferred from the claim text.