Solid hydrogen energy storage

Can solid-state hydrogen storage materials be used for hydrogen energy storage?

Energy drives the development of human civilization, and hydrogen energy is an inevitable choice under the goal of “global energy transition”. As hydrogen technology continues to advance, solid-state hydrogen storage materials have attracted significant attention as an efficient solution for hydrogen energy storage.

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.

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 are the different types of solid-state hydrogen storage?

Solid-state hydrogen storage can be categorized into two main types: physical adsorption and chemical adsorption, as illustrated in Figure 1 . Physical adsorption, also known as physisorption, is a process where gas molecules adhere to a solid surface through van der Waals forces without undergoing any chemical reactions.

Is hydrogen a viable storage method?

The broad use of hydrogen energy is hampered by concerns about compressed and liquified hydrogen’s safety, cost, and transportation. Due to its superior transit and storage capabilities, solid hydrogen storage materials are viable hydrogen storage technique. There are numerous physical and chemical ways to store hydrogen.

How much hydrogen can a hydrogen storage tank store?

The AIST alloy hydrogen storage tank developed by Japan’s Aichi Institute of Technology adopts an annular structure and can store about 700 g of hydrogen at 120 °C/1 MPa. It is worth mentioning that in recent years, China has also shown its potential in the field of solid-state hydrogen storage.