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研究了球磨过程中的非晶化程度对不同成分Mg -Ni非晶合金电化学吸放氢性能的影响。研究结果表明 ,随着合金成分的不同 ,非晶化程度的影响不同。当Ni含量低于 50 % (原子分数 )时 ,合金粉末中的非晶相所占比例越高 ,即非晶化程度越高时 ,合金电极的放电容量越大 ;而当Ni含量高于 50 % (原子分数 )时 ,非晶合金中存在少量游离态的Ni相 ,可提高电极的放电量。分析认为这与Ni相的存在改善了合金的吸放氢动力学性能有关。
The effect of the degree of amorphization during ball milling on the electrochemical hydrogen evolution and desorption properties of Mg-Ni amorphous alloys with different compositions was investigated. The results show that with the different composition of the alloy, the degree of amorphization has different effects. When the Ni content is less than 50% (atomic fraction), the higher the proportion of the amorphous phase in the alloy powder, that is, the higher the degree of amorphization, the greater the discharge capacity of the alloy electrode. When the Ni content is higher than 50 % (Atomic fraction), there is a small amount of amorphous Ni phase free state, can increase the discharge capacity of the electrode. It is considered that this is related to the improvement of the kinetics of hydrogen absorption and desorption of hydrogen in the presence of Ni phase.