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详细研究了通过机械合金化(MA)方法制备的Mg50Ni50-x-yMxNy(M,N=Al,Co和Si)系列非晶态贮氢合金的电化学特性。结果表明,该系列MA非晶合金的电化学活化容易,电化学容量高,其中Mg50Ni50合金的最大容量达500mA·h/g,约为晶态合金的10倍;但是它们的化学稳定性较差,容量的循环衰减速率达(10~60)mA·h/g·cycle。通过XRD分析,证实Mg-Ni基合金的性能衰退是由于其中的Mg在碱性溶液中被氧化所引起。
The electrochemical properties of Mg50Ni50-x-yMxNy (M, N = Al, Co and Si) series amorphous hydrogen storage alloys prepared by mechanical alloying (MA) The results show that this series of MA amorphous alloys have the advantages of easy electrochemical activation and high electrochemical capacity. The maximum capacity of Mg50Ni50 alloy is about 500mA · h / g, which is about 10 times that of crystalline alloys. However, their chemical stability is poor , The capacity of the cycle decay rate of (10 ~ 60) mA · h / g · cycle. By XRD analysis, it was confirmed that the deterioration of the properties of the Mg-Ni-based alloy is caused by the oxidation of Mg in the alkaline solution.