magnesiumhydride

Magnesium hydride is a chemical compound with the formula MgH2. It is a solid, typically appearing as a white powder, and is an inorganic salt. Magnesium hydride is known for its relatively high hydrogen content by weight. It is formed by the reaction of magnesium metal with hydrogen gas, usually under elevated temperatures and pressures. This synthesis can be achieved through various methods, including direct reaction of elements or through intermediate compounds.

The primary interest in magnesium hydride stems from its potential as a hydrogen storage material. Its ability to absorb and release hydrogen reversibly makes it a candidate for applications in fuel cell technology and portable energy devices. However, challenges remain in optimizing its hydrogen release and uptake kinetics, as well as its overall capacity and cycle life. The decomposition temperature of magnesium hydride is relatively high, meaning that significant heat is required to release the hydrogen, which can be a drawback for practical applications. Research continues to focus on modifying magnesium hydride, often through nanostructuring or doping with catalysts, to improve its performance characteristics for hydrogen storage.