Influence of boron on the hydriding of nanocrystalline Mg2Ni

► Small amount of boron in Mg2Ni improves the hydriding kinetics and thermodynamics. ► The increase of B content (13 at.% B) results in hydriding properties deterioration. ► Mg2Ni(B) reveal poorer electrochemical hydriding performance compared to pure Mg2Ni.