Contrastingly, for samples prepared at a higher speed of 400 rpm, capacity did not show a clear trend with crystallite size, but the overall rate of reaction sharply increased for samples with smaller Mg crystallite, suggesting that increased milling time had a considerable effect on reaction kinetics through crystallite refinement, without affecting overall capacity.
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Linking the Microstructure of Ball-Milled Mg-Ni Hydrogen Storage Materials to Reactive Properties and Techno-Economic Feasibility.
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