Insight into the energy conversion and structural evolution of magnesium hydride during high-energy ball milling for its controllable synthesis

Unlike temperature-controlled hydrogenation for synthesizing hydrogen storage materials, reactive milling of Mg crystal under hydrogen atmosphere for MgH2 synthesis is often uncontrollable. For the first time, we try to understand the preparation of MgH2 during the reactive ball milling in the perspective of energy conversion and structural evolution. High-energy ball milling can lead to basal slip of Mg crystal, which is controlled to disclose...