Preparation of hydrogen-storage alloy Mg–10wt% Fe2O3Fe2O3 under various milling conditions

We tried to improve the H2-sorption properties of Mg by mechanical grinding under H2 (reactive mechanical grinding) at various weight ratios of sample to ball (1/9, 1/27 and 1/45) with 10 wt% Fe2O3. The revolution speed was 250 rpm and the milling time was 2 h. The sample Mg–10 wt% Fe2O3, prepared by milling at the weight ratio of sample to ball 1/45, has the best hydrogen-storage properties. It absorbs 5.56 wt% hydrogen at the first cycle at...