X-ray diffraction revealed that the ZrNi_1.2Mn_0.5Cr_0.2V_0.1 alloy powder exposed to air showed quantitative surface phase composition of varying stability depending on the weight of samples. When a powder sample with a lower weight (5 g) was exposed to air for two days, its quantitative phase composition was quite stable and varied within 1%, while a powder sample with a greater weight (40 g) had polymorphic C15 and C14 phases (amount of the C15 phase became 4% higher and that of the C14 phase became 4% lower). The sample that was more stable in exposure to air for two days demonstrated a greater cyclic life in the hydrogeneration–dehydrogenation process. The quantitative phase composition of the lighter sample exposed to air was assumed to be also stable in the hydrogenation–dehydrogenation process and to promote a greater cyclic life, while changes in the quantitative phase composition affected the cyclic life. The activation of electrodes compacted from freshly made ZrNi_1.2Mn_0.5Cr_0.2V_0.1 alloy powders depended on the type of nickel and manganese used for melting and occurred at different rates. In the case of electrolytic nickel and electrolytic manganese in alloy melting (40 g samples), the maximum discharge capacity was reached six cycles sooner than in the case of cathode nickel and ferromanganese. Contrastingly to the activation rate, the cyclic life of electrodes made of the ZrNi_1.2Mn_0.5Cr_0.2V_0.1 alloy powders using different types of nickel and manganese primarily depended on the weight of the samples. The cyclic life curves for the electrodes pressed from freshly ground powders from the 5 g alloy samples (cathode nickel and ferromanganese in one sample and cathode nickel and electrolytic manganese in the other sample) matched. The cyclic life curves for the electrodes made of the 40 g samples (cathode nickel and ferromanganese in one sample and electrolytic nickel and electrolytic manganese in the other sample) matched as well. The best cyclic life was demonstrated by the electrodes made of the lighter powder samples. This was likely to be associated not only with the sample sizes but also with the use of cathode nickel in alloy melting. The loss of discharge capacity by these electrodes for 80 cycles was 8%, while that for the electrodes made of the powders ground from the heavier samples was 50%.

X 射线衍射表明 ZrNi _1.2 Mn _0.5 Cr _0.2 V _0.1暴露在空气中的合金粉末显示出定量的表面相组成，其稳定性取决于样品的重量。重量较轻（5 g）的粉末样品暴露在空气中两天后，其定量相组成相当稳定，变化在 1% 以内，而重量较大（40 g）的粉末样品则具有多晶型 C15 和 C14相（C15 相的量增加 4%，C14 相的量减少 4%）。在空气中暴露两天更稳定的样品在氢化-脱氢过程中表现出更长的循环寿命。假设暴露于空气中的较轻样品的定量相组成在氢化-脱氢过程中也是稳定的，并促进更长的循环寿命，而定量相组成的变化影响了循环寿命。由新鲜制成的 ZrNi 压实电极的活化_1.2 Mn _0.5 Cr _0.2 V _0.1合金粉末取决于用于熔化的镍和锰的类型并且以不同的速率出现。在合金熔炼中电解镍和电解锰（40 克样品）的情况下，最大放电容量比阴极镍和锰铁的情况早六个循环达到。与活化率相反，由 ZrNi 制成的电极的循环寿命_1.2 Mn _0.5 Cr _0.2 V _0.1使用不同类型镍和锰的合金粉末主要取决于样品的重量。由 5 克合金样品（一个样品中的阴极镍和锰铁，另一个样品中的阴极镍和电解锰）的新鲜研磨粉末压制而成的电极的循环寿命曲线匹配。由 40 g 样品（一个样品中的阴极镍和锰铁，另一个样品中的电解镍和电解锰）制成的电极的循环寿命曲线也匹配。由较轻的粉末样品制成的电极证明了最佳循环寿命。这可能不仅与样品尺寸有关，而且与在合金熔炼中使用阴极镍有关。这些电极在 80 次循环中的放电容量损失为 8%，