Effects of volatilization of lithium on hydrogen storage characteristics of Mg–Ni–Li alloy. Issue 20 (28th October 2019)

• Record Type: Journal Article
• Authors: Wu, Chih-Ting; Liu, Jen-Hao; Tsai, Te-Hui
• Is Part Of: Journal of materials research. Volume 34:Issue 20(2019)
• Page Start: 3583
• Page End: 3588
• Publication Date: 2019-10-28
• Subjects: volatilization of lithium, -- hydrogen storage characteristics, -- Mg–Ni–Li alloy, -- XRD; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1557/jmr.2019.287
• Languages: English
• ISSNs: 0884-2914

Abstract

Abstract: Abstract : 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 °C. After fully activated at 300 °C, Li was almost completely volatilized and the structure of Li-containing Mg82 Ni18 alloy was converted to the structure of Li-free Mg82 Ni18 alloy, but hydrogen absorption capacity significantly decreased. This is because volatilization of Li weakened the bonding between eutectic Mg and Mg2 Ni, lowering the catalytic effect of Mg2 Ni 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 °C.