%0 bachelor thesis %@ %A Guérin, A. %D 2019 %J %N %P %T TiFeMn alloy for solid state hydrogen storage for mobile applications %U %X This thesis is focused on the hydrogen storage properties of the TiFeMn alloy. The formation of interstitials,hydrides and the characteristics of TiFeMn are studied. In order to investigate the morphology,of this material before and after activation with hydrogen, a scanning electron microscope with,an energy dispersive X-Ray Spectroscopy probe is used. Furthermore, the thermodynamic properties,of the process of hydrogenation and dehydrogenation are investigated through a PCT Pro 2000 device,,running several cycles at different temperatures, in the range from 30°C to 90°C, under hydrogen,pressure up to 50 bar. The volume expansion of the metal lattice during the processes is observed,through a physical change in the morphology of the powder. The numerous PCI measurements done,with activated powder of TiFeMn have shown a maximal gravimetric capacity of 1,54 wt.% at 30°C.,The sloping behaviour of the plateau for each measurement have made the calculation of the values,for enthalpy and entropy at different concentration for the system more meaningful.