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首页> 外文期刊>Journal of power sources >Hydrogen absorption and electrochemical properties of Mg_2Ni-type alloys synthesized by mechanical alloying
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Hydrogen absorption and electrochemical properties of Mg_2Ni-type alloys synthesized by mechanical alloying

机译：机械合金化合成的Mg_2Ni型合金的氢吸收和电化学性能

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摘要

Mg_2Ni-type alloys, i.e., Mg_2Ni, Mg_2Ni_(0.75)Cu_(0.25), Mg_2Ni_(0.6)Cu_(0.4) and Mg_2Ni_(0.75)V_(0.25) were synthesized by mechanical alloying and subsequent thermal treatment starting from a corresponding elemental powder mixture. The kinetics of hydrogen absorption and desorption of annealed materials were measured using a manually controlled Sieverts apparatus. The electrochemical characteristics of Mg_2Ni-type alloys were tested for their ability to store hydrogen at room temperature by using constant current to charge and discharge the electrode. The partial substitutions of Cu and V for Ni increased hydrogen absorption and desorption at 200 deg C and improved the electrochemical storage capacity and cycle life at room temperature.
机译：Mg_2Ni型合金，即Mg_2Ni，Mg_2Ni_（0.75）Cu_（0.25），Mg_2Ni_（0.6）Cu_（0.4）和Mg_2Ni_（0.75）V_（0.25），是从相应的元素粉末开始进行热处理的混合物。使用手动控制的Sieverts设备测量退火材料的氢吸收和解吸动力学。通过使用恒定电流对电极充电和放电，测试了Mg_2Ni型合金的电化学特性，以了解它们在室温下储存氢的能力。 Cu和V的部分取代Ni可以增加200℃下的氢吸收和解吸，并改善室温下的电化学存储容量和循环寿命。

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