The morphology of the starting MgH2, MgH2-GLM and MgH2-Ni/GLM composites and the deposits after hydrolysis of MgH2 was studied using Zeiss Auriga and Zeiss LEO SUPRA 25 SEM scanning electron microscopes (SEM). Additionally, JEOL JEM-2100F transmission electron microscope (TEM) was used for the morphological characterisation of the Ni/GLM catalyst to determine the size of Ni nanoparticles and their distribution on the GLM substrate; the Ni loading was estimated by EDS using Zeiss LEO SUPRA 25 SEM instrument.