Carbonaceous material for hydrogen storage and method for preparation thereof, carbonaceous material having hydrogen absorbed therein and method for preparationthereof, cell and fuel cell using carbonaceous material having hydrogen absorbe d therein

摘要

A hydrogen-storing carbonaceous material is provided. The hydrogen-storing carbonaceous material is obtained by heating a carbonaceous material at lower than about 800° C. before hydrogen is stored under the pressure of hydrogen of about 50 atmospheric pressure or higher. The present invention also provides hydrogen-stored carbonaceous material that is obtained by hydrogen storage in the hydrogen-storing carbonaceous material under the pressure of hydrogen of about 50 atmospheric pressure or higher. This hydrogen-stored carbonaceous material is used for a battery or a fuel cell. The hydrogen-stored carbonaceous material is heated at lower than about 800° C. before the hydrogen is stored under the pressure of hydrogen of about 50 atmospheric pressure or higher, so that the hydrogen-storing carbonaceous material whose hydrogen storage capacity is greatly enhanced can be produced.