期刊
JOURNAL OF MATERIALS RESEARCH
卷 34, 期 20, 页码 3583-3588出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2019.287
关键词
volatilization of lithium; hydrogen storage characteristics; Mg-Ni-Li alloy; XRD
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.
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