Hydrogen storage properties of amorphous and nanocrystalline Zr-Ni-V alloys

Abstract Hydrogen storage properties, such as hydrogen absorbency, hydriding–dehydriding kinetics, P – C – T characteristics and thermal desorption spectra, were studied for amorphous, nanocrystalline and as-cast crystalline phases of Zr–Ni–V alloys near the equiatomic composition. The nanocrystalline alloys were obtained from melt-spun amorphous ribbons by crystallizing at moderate temperatures. Their structures were examined by X-ray diffraction and transmission electron microscopy. The hydrogen storage properties of the nanocrystalline alloys were in general superior to the corresponding amorphous alloys but inferior to the as-cast alloys particularly in the dehydriding properties as revealed by thermal desorption spectra.