/Ni nanocomposites
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United States of America Patent
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Nov 28, 2017
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app pub date -
Feb 7, 2017
filing date -
Feb 7, 2017
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Abstract
A method for synthesis of MgH2/Ni nanocomposites includes balancing magnesium (Mg) powder in a ball milling container with helium (He) gas atmosphere; adding a plurality of nickel (Ni) milling balls to the container; introducing hydrogen (H2) gas to the container to form a MgH2 powder; milling the MgH2 powder using the Ni-balls as milling media to provide MgH2/Ni nanocomposites. The milling can be high-energy ball milling, e.g., under 50 bar of hydrogen gas atmosphere. The high-energy ball milling can be reactive ball milling (RBM). The method can be used to attach Ni to MgH2 powders to enhance the kinetics of hydrogenation/dehydrogenation of MgH2.
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