Hydrogen storage properties of flexible and porous La0.8Mg0.2Ni3.8/PVDF composite

► 0.08-0.13 wt% increased capacity was detected at 70 °C with increasing (NH4)2CO3. ► Increasing temperature from 0 °C to 100 °C, 0.1-0.15 wt% increased capacity was obtained. ► The composites showed flexible/solidified behavior in hydriding/dehydriding. ► 0.1 wt% increased capacity remained after cycles due to the existence of PVDF.