Rare Earth Hydrides and Hydrogen Storage Alloys

It has long been found that hydrogen can be dissolved in steel and other metal alloys, which can cause stress corrosion and hydrogen embrittlement. Hence, the research on the interactions between different metals and hydrogen has gradually increased. Studies have found that certain metals and their alloys produce hydrides, which can be heated to release hydrogen. Notably, hydrogen absorption and evolution reactions are reversible. This phenomenon can be used to convert different types of energy.