Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 509, Issue 1, Pages 99-104Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.08.123
Keywords
Hydrogen absorbing materials; Metal hydrides; Powder metallurgy; Kinetics; Thermodynamic properties
Categories
Funding
- National Natural Science Foundation of China [50804029]
- Foundation for the Author of National Excellent Doctoral Dissertation of P.R. China [200746]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0739]
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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. (C) 2010 Elsevier B.V. All rights reserved.
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