By: Fermin Cuevas: CNRS research director at the Interaction of Hydrogen and Matter Group - Univ Paris Est Creteil, CNRS, ICMPE, UMR 7182, 2 rue Henri Dunant, 94320 Thiais, France
When: September, 30 - 12PM
Where: Salón de Actos, ICMM
Abstract: Aiming to mitigate the issues of climate change and economic dependence on fossil fuels, hydrogen is considered as an ideal energy carrier for both mobile and stationary applications. Its low volumetric density is however a serious drawback for its storage. Three main techniques exist to store hydrogen i) gas storage at high hydrogen pressures (700 bar) in composite tanks, ii) liquid storage at low cryogenic temperatures (21 K) using insulated tanks and iii) solid-state storage under hydrogen pressures and temperatures close to ambient conditions, which ultimately improves storage efficiency and safety.
After several decades of research in solid state hydrogen storage, many hydrogen-containing compounds have been discovered and their fundamental hydrogenation properties determined. Quite often, their ability to store hydrogen is given considering their gravimetric and volumetric capacities as the main criteria. Although these parameters are intrinsic fundamental ones, the first criterion for a given application is the reversibility of the hydrogen uptake/release reaction under the pressure and temperature conditions of operation. Following these considerations, main materials used today in solid-state hydrogen storage tanks are based on hydride-forming intermetallic compounds.
This seminar will focus on the main concepts of hydrogen storage, hydrogen reversibility on metal hydrides, their sustainability and practical applications on hydrogen technologies. Current French national research programs on solid state hydrogen storage [1] and the recent European project HyCare [2] will be particularly showcased.
Funding from the French National Research Agency (ANR) under France 2030 program and reference ANR-22-PEHY-0007 is acknowledged
