Solid hydrogen energy storage

How is hydrogen stored in solid form?

Chemical storage of hydrogen in solid form involves the dissociation of H 2 molecules into “hydrogen moieties” that can enable the storage of hydrogen in an atomic form (H) or via a chemical reaction involving hydrogen as a hydride (H −), proton (H +), or both (reactions (1)– (4)).

What is solid-state hydrogen storage?

As discussed, hydrogen is a promising clean energy carrier with the ability to greatly contribute to addressing the world's energy and environmental challenges. Solid-state hydrogen storage is gaining popularity as a potential solution for safe, efficient, and compact hydrogen storage.

Why is hydrogen a promising storage method?

The safety, cost, and transportation of compressed and liquified hydrogen hinder the widespread application of hydrogen energy. Chemical absorption of hydrogen in solid hydrogen storage materials is a promising hydrogen storage method due to its high storage and transportation performance.

What are solid hydrogen storage materials?

Many solid hydrogen storage materials such as magnesium-based hydrides, alanates, and/or borohydrides display promising hydrogen densities far superior to the current state of compressed or liquid hydrogen. These solid materials have thermodynamic and kinetic barriers which severely hinder their practical hydrogen uptake and release.

Are HEAs a potential hydrogen storage material?

The results of this study indicate that HEAs are potential hydrogen-storage materials; however, additional research and improvements are required to enhance their hydrogen storage/release rate and cycle stability. HEAs are anticipated to become increasingly important in hydrogen energy storage and transportation in the future.

Are solid-state hydrogen storage materials economically feasible?

To be economically feasible, solid-state hydrogen storage materials must exhibit long-term stability and endurance. Comprehensive studies that analyze the deterioration processes of storage materials under real-world settings, including temperature fluctuations and cycling, are lacking in the literature. 6. Conclusions and future perspectives