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Effects of volatilization of lithium on hydrogen storage characteristics of Mg-Ni-Li alloy

机译：锂的挥发对Mg-Ni-Li合金储氢特性的影响

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摘要

Lithium was added to the hypereutectic Mg-Ni alloy to investigate the effect of volatilization of Li on the hydrogen storage characteristics of the eutectic Mg-Ni alloy at 300 degrees C. After fully activated at 300 degrees C, Li was almost completely volatilized and the structure of Li-containing Mg82Ni18 alloy was converted to the structure of Li-free Mg82Ni18 alloy, but hydrogen absorption capacity significantly decreased. This is because volatilization of Li weakened the bonding between eutectic Mg and Mg2Ni, lowering the catalytic effect of Mg2Ni on Mg. The decrease in hydrogen absorption capacity was more obvious with increasing Li content. In addition, experimental alloy in powder form could increase surface area, causing Li to volatilize at 300 degrees C.
机译：向过共晶Mg-Ni合金中添加锂以研究Li的挥发对300℃下共晶Mg-Ni合金储氢特性的影响。在300℃下完全活化后，Li几乎完全挥发，并且含锂的Mg82Ni18合金的结构转变为无锂的Mg82Ni18合金的结构，但氢吸收能力显着下降。这是因为Li的挥发削弱了共晶Mg和Mg2Ni之间的键合，降低了Mg2Ni对Mg的催化作用。随着Li含量的增加，氢吸收能力的降低更加明显。此外，粉末形式的实验合金可能会增加表面积，从而导致Li在300摄氏度下挥发。

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