Abstract: The present invention relates to a strontium magnesium molybdenum oxide material having perovskite structure and the method for preparing the same. Citric acid is adopted as the chelating agent. By using sol-gel pyrolysis and replacing a portion of strontium in Sr2MgMoO6-? by cerium and a portion of magnesium by copper, a material with a chemical formula of Sr2-xCexMg1-yCuyMoO6-? is produced, where 0?x<2, 0<y<1, and 0<?<6. Thereby, the electrical conductivity of the material is improved. The perovskite-type cerium- and copper-replaced strontium magnesium molybdenum oxide significantly increases the electrical conductivity of the material and can be applied as the anode material for solid oxide fuel cell (SOFC).

Abstract: The present invention relates to a strontium magnesium molybdenum oxide material having perovskite structure and the method for preparing the same. Citric acid is adopted as the chelating agent. By using sol-gel pyrolysis and replacing a portion of strontium in Sr2MgMoO6-? by cerium and a portion of magnesium by copper, a material with a chemical formula of Sr2-xCexMg1-yCuyMoO6-? is produced, where 0?x<2, 0<y<1, and 0<?<6. Thereby, the electrical conductivity of the material is improved. The perovskite-type cerium- and copper-replaced strontium magnesium molybdenum oxide significantly increases the electrical conductivity of the material and can be applied as the anode material for solid oxide fuel cell (SOFC).

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.

Abstract: The present invention provides a high capacity hydrogen storage material in which a plural mesopore channels and fractal networks of nanopore channels communicating therewith and connecting to the micropores are formed in a microporous material, wherein a plural metal particles are formed on the surface of the mesopore and nanopore channels and of the micropores. In another embodiment, the present invention also provides a method for making the hydrogen storage material through oxidizing the microporous material so as to form a plural mesopore channels and fractal networks of nanopore channels, both of which are connected to the micropores to form a base for the deposition of metal particles capable of decomposing hydrogen molecules into hydrogen atoms. The high capacity hydrogen storage material is capable of increasing the capacity of hydrogen storage, and besides, the oxidizing process for making the hydrogen storage material is simple and has merits of saving cost.

Abstract: The present invention provides a high capacity hydrogen storage material in which a plural mesopore channels and fractal networks of nanopore channels communicating therewith and connecting to the micropores are formed in a microporous material, wherein a plural metal particles are formed on the surface of the mesopore and nanopore channels and of the micropores. In another embodiment, the present invention also provides a method for making the hydrogen storage material through oxidizing the microporous material so as to form a plural mesopore channels and fractal networks of nanopore channels, both of which are connected to the micropores to form a base for the deposition of metal particles capable of decomposing hydrogen molecules into hydrogen atoms. The high capacity hydrogen storage material is capable of increasing the capacity of hydrogen storage, and besides, the oxidizing process for making the hydrogen storage material is simple and has merits of saving cost.