To improve the hydrogenation and dehydrogenation dynamics of NdMg₁₂-type alloy, we replaced part of Mg with Ni in the samples and used the ball milling method to prepare NdMg₁₁Ni + x wt.% Ni (x = 100, 200) samples. The influences of milling duration and Ni content on the electrochemical and gaseous dynamics of the samples were studied in detail. Dehydrogenation activation energies of samples were calculated by using Kissinger and Arrhenius methods. The conclusions show that the dynamic properties of samples are significantly enhanced with the increase in Ni content. With the change of the milling duration, the gaseous hydrogenation rate and high rate discharging capability reach the maximal values. However, the dehydrogenation dynamics of sample alloys are always enhanced with the prolonging of milling duration. More concretely, prolonging milling duration from 5 to 60 h improves the dehydrogenation ratio of NdMg₁₁Ni + 100 wt.% Ni alloy from 58.03% to 64.81% and that of NdMg₁₁Ni + 200 wt.% Ni alloy from 62.20% to 71.59%. Besides, the enhancement of gaseous hydrogen storage dynamics of the samples is believed to be the result of the declined dehydrogenation activation energy resulted from the increase in milling duration and Ni content.

为了改善NdMg ₁₂型合金的加氢和脱氢动力学，我们用样品中的Ni代替了部分Mg，并采用球磨法制备了NdMg ₁₁ Ni +  x wt。％Ni（x = 100，200）个样本。详细研究了研磨时间和镍含量对样品电化学和气体动力学的影响。采用基辛格和阿伦尼乌斯方法计算了样品的脱氢活化能。结论表明，随着Ni含量的增加，样品的动态性能显着增强。随着研磨时间的变化，气态氢化率和高倍率排放能力达到最大值。然而，随着铣削时间的延长，样品合金的脱氢动力学总是会增强。更具体地，将铣削持续时间从5小时延长到60小时将NdMg ₁₁ Ni + 100 wt％Ni合金的脱氢率从58.03％提高到64.81％，将NdMg ₁₁的脱氢率提高Ni + 200 wt。％Ni合金，含量从62.20％降至71.59％。此外，样品气态储氢动力学的增强被认为是由于研磨时间和镍含量的增加而导致脱氢活化能下降的结果。