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

摘要

A hydrogen-stored carbonaceous material is provided. The present invention relates to a hydrogen-stored carbonaceous material obtained by storing hydrogen in a carbonaceous material heated at more than about 230° C. under pressure in a reducing atmosphere, a battery and a fuel cell using same. The carbonaceous material is heated at more than about 230° C. under pressure in a reducing atmosphere so that its surface can be efficiently cleaned and an area where the surface of the carbonaceous material comes into contact with hydrogen atoms or hydrogen molecules is increased.