Speaker
Description
Complex hydrides, such as Mg(BH4)2, have been studied for solid-state hydrogen storage application due to the high content of hydrogen per mass and volume in these compounds. Additionally, chemically bounded hydrogen and lower operational pressures offer significant safety advantages over the traditional storage methods in pressurized or cryogenic tanks. However, hydrogen release and re-absorption in the complex hydrides remains a problem as it still requires elevated operational temperatures (100 – 400 °C) impractically high rehydrogenation pressures, sluggish kinetics of hydrogen sorption reactions as well as complex reaction pathways.
Due to the high neutron scattering cross-section of H, neutron spectroscopy is a distinguishable tool in the investigation of complex hydrides for hydrogen storage applications. It can offer unique insights into hydrogen absorption and desorption mechanisms, revealing fundamental interactions and transformations within these materials. This talk will introduce the use of neutron spectroscopies and their combination with vibrational spectroscopies, such as Raman scattering, to explore the structural and dynamic properties of hydrides in characterization of their structure and hydrogen dynamics highlighting recent progress in the field.
