To improve the dehydrogenation/hydrogenation performance of magnesium hydride (MgH₂), a nickel-vanadium bimetallic oxide (NiV₂O₆) was prepared by a simple hydrothermal method using ammonium metavanadate and nickel nitrate as raw materials. This oxide was used to improve the hydrogen storage performance of MgH₂. NiV₂O₆ reacted with Mg to form Mg₂Ni and V₂O₅; Mg₂Ni and V₂O₅ played an important role in improving the hydrogen storage properties of MgH₂. The NiV₂O₆-doped MgH₂ had an excellent hydrogen absorption and desorption kinetics performance, and it could absorb 5.59 wt% of hydrogen within 50 min at 150 °C and release about 5.3 wt% of hydrogen within 12 min. The apparent activation energies for the dehydrogenation and hydrogenation of MgH₂-NiV₂O₆ were 92.9 kJ mol⁻¹ and 24.9 kJ mol⁻¹, respectively. These were 21.7% and 66.3% lower than those of MgH_2, respectively. The mechanism analysis demonstrated that the improved kinetic properties of MgH₂ resulted from the heterogeneous catalysis of vanadium and nickel.

为提高氢化镁（MgH ₂ ）的脱氢/加氢性能，以偏钒酸铵和硝酸镍为原料，采用简单的水热法制备了镍钒双金属氧化物（NiV ₂ O _{6 ）。该氧化物用于改善MgH 2}的储氢性能。NiV ₂ O ₆与Mg反应生成Mg ₂ Ni和V ₂ O ₅；Mg ₂ Ni 和V ₂ O _{5对提高MgH 2}的储氢性能起到了重要作用。NiV ₂ O ₆掺杂MgH ₂具有优异的吸氢和解吸动力学性能，在150 ℃下50 min内可吸收5.59 wt%的氢，12 min内可释放约5.3 wt%的氢。_{MgH 2} -NiV ₂ O ₆的脱氢和加氢的表观活化能分别为92.9 kJ mol ^-1和24.9 kJ mol ^-1。这些分别比MgH ₂低21.7%和66.3% 。机理分析表明，MgH ₂动力学性质的改善源于钒和镍的多相催化。