Hydrogen storage

Certain types of materials absorb and store large amounts of hydrogen reversibly at ambient pressures and temperatures. These materials have applications in energy storage: in batteries or hydrogen tanks for fuel cell-powered engines. The research on hydrogen storage is focused on finding novel materials that can store large amounts of hydrogen, and to investigate these compounds with regard to crystal structure, reversibility, kinetic and thermodynamic properties etc. This research is done in collaboration with various internationally recognised research groups across Europe.

From the left. 1. The hydrogen energy cycle. 2. The crystal structure of ScMg2Ga2. 3. High temperature synthesis inside a sealed tantalum tube.

We are working with new bulk materials, mainly scandium- or magnesium-based alloys and compounds. Our basic goal is to find a material which can store vast amounts of hydrogen at 10-40˚C and a hydrogen equilibrium pressure of 1-10 bar. For example, it has been demonstrated that by alloying scandium with magnesium and aluminium, it is possible to lower the hydrogen desorption temperature of pure scandium hydride by almost 500˚C. This method is commonly called destabilisation and is frequently used in metal hydride materials. Our research is carried out in a cross disciplinary environment in co-operation with other research groups at the Ångström Laboratory. Examples are thin-film studies of hydrogen absorbing materials (Prof. B. Hjörvarsson, Physics department) and theoretical predictions of reaction mechanisms using DFT calculations (Prof. O. Eriksson, Physics department).

If you want to learn more please contact Martin Sahlberg.

Last modified: 2021-05-31