Hydrogen Storage in Nitrides by the Use of Ammonia as a Hydrogen Carrier

Hayao Imamura; Naotaka Shimomura; Keisuke Watanabe; Kenichi Tanaka; Fumiya Nakamura; Yoshihisa Sakata

doi:10.4028/www.scientific.net/MSF.654-656.2819

Paper Titles

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Fabrication of Nanocrystalline TiO₂ Films by Aerosol Deposition Method for Dye-Sensitized Solar Cells
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Variation of Heat Dissipation Properties of LED Packages with Thermal Vias
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Thermodynamic Characterization on Hydrogen Absorption and Desorption Reactions of Lithium – Silicon Alloy
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Hydrogen Storage in Nitrides by the Use of Ammonia as a Hydrogen Carrier
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Hydrogen Permeation Properties of Pd-Coated Ni_37.5Nb_27.5Zr₂₅Co₅Ta₅ Amorphous Membrane
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A New Concept for Alloy Design of Nb-Based Hydrogen Permeable Alloys with High Hydrogen Permeability and Strong Resistance to Hydrogen Embrittlement
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Hydrogen Permeation of Pd-Free V-Based Metallic Membranes for Hydrogen Separation and Purification
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Influence of Temperature on Self-Discharge and High-Rate Discharge Characteristics of La-Rich AB₅-Based MH Alloy Electrode
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Hydrogen Storage in Nitrides by the Use of Ammonia as a Hydrogen Carrier

Abstract:

Hydrogen storage by calcium nitride or magnesium nitride has been undertaken by the use of ammonia, in which the possibility of ammonia as a vector for hydrogen carriers has been studied. When the calcium imide ornitride obtained by thermal decomposition of calcium amide dispersed on active carbon (AC) was brought into contact with ammonia gas (300 Torr) at room temperature, NH3 uptake readily occurred. When the sample after NH3 uptake was heated, the absorbed ammonia was released in the form of hydrogen and nitrogen. The ammonia is possibly absorbed in the form of the decomposed state in the imide ornitride. This type of hydrogen storage has been extensively studied and characterized.For magnesium nitride, ammonia was absorbed and desorbed without the decomposition.