Magnesium nickel hydride is the chemical compound Mg₂NiH₄. It contains 3.6% by weight of hydrogen and has been studied as a potential hydrogen storage medium.{{cite journal, doi=10.1016/S0925-8388(00)00906-3, title=Hydrogen storage alloy of Mg2NiH4 hydride produced by hydriding combustion synthesis from powder of mixture metal, journal=Journal of Alloys and Compounds, volume=308, issue=1–2, pages=98–103, year=2000, last1=Li, first1=Liquan, last2=Akiyama, first2=Tomohiro, last3=Yagi, first3=Jun-Ichiro

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Metal hydrides Magnesium compounds Nickel compounds