Research Progress on Transition Metals and Their Compounds Using as Modified Magnesium-based Hydrogen Storage Materials
Magnesium hydride(MgH2)is considered as one of the most promising solid-state hydrogen storage materials for application due to their abundant resources,low cost,high hydrogen storage capacity,and non-pollution.However,it also suffers from the drawbacks of the poor kinetic and thermodynamic.Transition metals and their compounds are applied to catalyze MgH2 and effectively lower the dehydrogenation and rehydrogenation temperature,reduce the activation energy,and improve the cycling property.The paper reviews the research progress of transition metals and their compounds in catalytic modification of MgH2,and summarizes the application synthesis methods,modification ways,and modification mechanisms.The results indicate that the modification effect is mainly affected by the type,ratio,and content of catalyst elements,as well as carrier type and preparation technology.Finally,it also outlooks the future research direction of transition metal-based catalysts in order to provide the reference for the research and development of high performance magnesium-based hydrogen storage materials.
Solid-state hydrogen storageTransition metalsMagnesium-based hydrogen storage materialsHydrogen absorption and desorption
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