Title
Improved hydrogen storage of LiBH4 catalyzed magnesium
Document Type
Journal Article
RIS ID
22478
Abstract
The effect of LiBH4 on the hydrogen sorption performance of magnesium was investigated. It was found that the hydrogen storage properties of LiBH4/Mg mixtures exhibit a dramatic improvement as compared to plain magnesium powder. For example, at 250°C, a LiBH4/Mg (mass ratio 1:4) composite can absorb 6.7 wt % hydrogen in 60 min, while only less than 1 wt % hydrogen was absorbed by pure magnesium in the same period under similar conditions. The hydrogen desorption properties of the composite at 350°C were also improved significantly as compared to the plain magnesium powder. Furthermore, highly activated magnesium hydride was synthesized directly by ball milling LiBH4/Mg mixtures under high hydrogen pressure. The synthesized magnesium hydride exhibits superior kinetics, absorbing 5.78 wt % hydrogen at the relatively low temperature of 200°C within 100 min.
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Publication Details
Mao, J, Wu, Z, Chen, T, Weng, B, Xu, N, Huang, T, Guo, Z, Liu, HK, Grant, D, Walker, G & Yu, X (2007), Improved hydrogen storage of LiBH4 catalyzed magnesium, The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, 111(33), pp. 12495-12498.