May 15, 2019
02:00 pm
Louvain-La-Neuve
Auditorium BARB92
IMCN / iMMC SEMINAR
Dr. Michael HIRSCHER
« Hydrogen Storage in Nanoporous Materials»
Max Planck Institute for Intelligent Systems
(Stuttgart – Germany)
The change from a fossil fuel-based energy economy to one based on renewable energy sources requires an easy and reliable method of storing energy, since renewables have daily and seasonal fluctuations. Chemical storage seems to be the best solution, and here hydrogen has gained major importance as an energy carrier. Today, hydrogen is typically stored as gas under high pressures up to 70 MPa, however, hydrogen storage in solid materials or in liquid hydrogen carriers are alternatives that can lead to higher storage densities under drastically reduced pressure. Hydrogen is either chemically bound, in hydrides or in liquid hydrogen carriers, or physically bound in porous materials. After a general introduction, this talk will focus on physical adsorption of hydrogen molecules on high-surface-area, porous materials for storage in cryo-adsorption tanks. The development of metal-organic frameworks (MOFs) with extremely high specific surface areas has pushed this field resulting in very high gravimetric storage densities at cryogenic temperatures