Effect of MoS₂ on hydrogenation storage properties of LiBH₄

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• 作者：Dan Liang ; Shumin Han ; Jiasheng Wang ; Wei Zhang ; Xin Zhao ; Ziyang Zhao
• 关键词：Hydrogen storage material ; Lithium borohydride ; Hydrogen storage property ; Catalyst
• 刊名：Journal of Solid State Chemistry
• 出版年：March, 2014
• 年：2014
• 卷：211
• 期：Complete
• 页码：21-24
• 全文大小：565 K

文摘

The hydrogen storage properties of LiBH₄ ball milled with 20 wt% MoS₂ have been investigated. It shows that the LiBH₄ doped with MoS₂ exhibits favorable hydrogenation and dehydrogenation properties in terms of decomposition temperature and hydriding/dehydriding reversibility. The sample with MoS₂ starts to release hydrogen at 230 掳C and has a decrease of 80 掳C in contrast with pristine LiBH₄. Furthermore, for the second cycle, the LiBH₄ with MoS₂ maintains a reversible hydrogen storage capacity of about 8.0 wt% which is almost identical with the first cycle under 5 MPa at 550 掳C. Analyzed by the XRD and the FTIR results, LiBH₄ can be regenerated after re-hydrogenation under a relatively mild condition by adding MoS₂. The improvement of the hydrogenation and dehydrogenation properties mainly results from the formation of Li₂S and MoB₂ during ball milling.