Résumé
A regenerable hydride is made up of light elements, which, after dehydrogenation, form one or more very stable by-products that cannot be easily rehydrogenated under molecular hydrogen pressure. This chapter presents the advantages and disadvantages of regenerable hydrides with the potential for hydrogen storage, on the basis of the most mature achievements. It highlights the main obstacles and challenges to overcome to achieve technological maturity. Lithium hydride has all the characteristics of a potential hydrogen carrier, specifically a regenerable hydride capable of producing molecular hydrogen by hydrolysis at room temperature. Lithium hydroxide is one of the end products of lithium extraction from ores. Magnesium is often considered a reversible hydrogen storage material. The use of magnesium for certain applications has been considerably limited by its poor mechanical properties and corrosion resistance.