Microwave-assisted synthesis and characterization of Nd1.5Mg17Ni0.5-Fe3O4 hydrogen storage composite |
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Authors: | Qian Li Li-Wen YeJie Meng Yang LiuKuo-Chih Chou |
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Affiliation: | Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai 200072, PR China |
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Abstract: | This work reports the preparation of Nd1.5Mg17Ni0.5-Fe3O4 hydrogen storage composite in a single mode 2.45 GHz microwave cavity. The physicochemical properties (thermodynamic and kinetic characteristics, hydrogen absorption/desorption properties, thermal behavior, phase composition and morphology) were characterized by pressure-composition isotherms, differential scanning calorimetry, X-ray diffraction, scanning electron microscope with an energy dispersive X-ray spectrometer, transmission electron microscopy, and laser granulometry. The proposed microwave synthesis, in contrast with conventional sintering method, offers rapid heating, makes homogenous composition and hence improves the hydrogen storage properties of the composite. |
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Keywords: | Hydrogen absorbing materials Metal hydrides Powder metallurgy Kinetics Thermodynamic properties |
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