A novel material Mg-4%Ni-1%NiO for hydrogen storage applications was fabricated by mechanical milling at cryogenic temperature(cryomilling).The effects of ball milling time on the structure morphology and the hydrogen storage performance of the newly developed materials were investigated at cryogenic temperature.The phase structure and surface morphology were analyzed by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The hydrogenation and dehydrogenation characteristics were studied by a press...