Berlin 2008 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 40: SYM Hydrogen in Materials: New Developments IV

MM 40.1: Hauptvortrag

Donnerstag, 28. Februar 2008, 16:30–17:00, H 1058

Complex Metal Hydrides — •Michael Felderhoff — Max-Plack-Institut für Kohlenforschung, Kaiser Wilhelm Platz 1, 45470 Mülheim / Ruhr

One important feature for a commercial success of PEM fuel cell for mobile applications is the improvement of the hydrogen storage system. Since the physical storage methods are limited, solid state hydrogen storage are in the focus of research activities. The classical metal hydrides have storage capacities not higher than 2 wt.%. Compared to these materials the storage capacities of the complex metal hydrides are much higher. Sodium aluminium hydride (NaAlH4) is one of the most interesting material, because it is fully reversible, the thermodynamic properties and the storage capacities are close to the technical requirements for on-board hydrogen storage. The recent work for optimization of the complex metal hydrides and to understand the molecular processes during the de- and rehydrogenation reactions will be summarized.