The invention discloses a carbon nanometer crystal hydrogen storage material and the making method. The constituents of the material includes 60-90wt% coal based carbon with hexagonal net grid layer crystal structure and the particle diameter is 20-100nm, 10-40wt% of one or several metal from Na, Al, Ti, V, Cr, Fe, Ni, Zn, Mo, and Pd. The method includes the following steps: taking alkali washing and acid washing to coal, after 1000-1600 degree centigrade carbonization, adding the metal powder, under 0.5-3MPa hydrogen pressure, taking ball milling for 0.5-8h. It has the advantages of large hydrogen storage density, low raw material cost, simple technology, etc. |