Abstract: A method of forming a hydrogen storage structure is disclosed, which comprises: providing a porous material formed by micropores and nanochannels, wherein said micropores have a size less than 2 nm and a volumetric ratio larger than 0.2 cm3/g, said nanochannels have a width less than 2.5 nm, and fractal networks formed by said nanochannels have a fractal dimension closed to 3; to form an oxidized porous material by oxidation of said porous material and to properly increase and tailor sizes of said micropores and nanochannels; and forming metal particles of diameters less than 2 nm in said micropores and said nanochannels of said oxidized porous material. By the method according to the present invention, it is capable of constructing a hydrogen storage structure with room-temperature hydrogen storage capability of almost 6 wt %, which satisfies the on-board target criteria of DOE in America by 2010.

Abstract: The present invention provides a method for constructing a fractal network structure in hydrogen storage material to improve the hydrogen uptake at room temperature, the method including the following steps: providing a hydrogen storage material comprising a source and a receptor of hydrogen atoms, wherein the source is disposed above the receptor, and a chemical bridge is disposed between the source and the receptor, wherein the chemical bridge is composed of precursor material; and treating the hydrogen storage material to construct a fractal network structure of mesopores and micropores in the receptor, so as to enhance the hydrogen storage capacity of the hydrogen storage material at room temperature.