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MM: Fachverband Metall- und Materialphysik
MM 12: Poster session I
MM 12.10: Poster
Montag, 1. April 2019, 19:15–20:45, Poster C
Analysis of the phase transition processes of sodium borohydride and first tests about its rehydration by means of cold dielectric barrier discharge plasmas — •Maik Szafarska1,2, Georgia Sourkouni-Argirusi1, and Wolfgang Maus-Friedrichs1,2 — 1Clausthaler Zentrum für Materialtechnik, TU Clausthal, Leibnizstr. 4, 38678 Clausthal-Zellerfeld, Germany — 2Institut für Energieforschung und Physikalische Technologien, TU Clausthal, Leibnizstr. 4, 38678 Clausthal-Zellerfeld, Germany
In the last decade, sodium borohydride has attracted attention in energy storage research, caused by its high hydrogen density and relatively low cost, making it a potentially better hydrogen (and energy) storage unit compared to compressed hydrogen gas tanks and liquid hydrogen. Therefore it would be an innovation for fuel cell economy and energy storage. To make it economically viable, its dehydration temperature has to be lowered and a new rehydration method has to be found. The phase transition mechanisms are a key for understanding the behavior of the material during these two processes. To investigate the phase transition and the rehydration of the material further, Thermogravimetric- and Multi Gas-Analysis were performed. The experimental results show that released hydrogen and the decomposition of the material occur during different phase transitions. Additionally first tests about the rehydration via dielectric barrier discharge plasmas show optimistic results.