Improved Hydrogen Generation Performance via Hydrolysis of MgH<sub>2</sub> with Nb<sub>2</sub>O<sub>5</sub> and CeO<sub>2</sub> Doping

Rapid formation of magnesium hydroxide passivation layer during hydrolysis MgH2 seriously blocks its application as a hydrogen generation material. is also susceptible to oxidation. with Nb2O5 and/or CeO2 doping has been prepared via high energy ball milling in this work the aim enhancing performance and oxidation resistance. The phase compositions, microstructure evolution properties have systematically investigated. particles particle size range ?20–200 nm are uniformly dotted on surface matrix after milling. It found that shows better facilitating effects than MgH2. As-milled MgH2+10%Nb2O5 MgH2+10%CeO2 samples generate ?705 474 mL g?1 distilled water within 60 min, respectively. Introducing MgCl2 can significantly enhance reaction kinetics conversion rate. sample yield 1222 5% solution, corresponding rate 74.6%. However, air exposed hardly generates any solution. modify resistance some extent. still produce ?250 24 h exposure.