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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Enhanced hydrogen sorption properties in the LiBH_4-MgH_2 system catalysed by Ru nanoparticies supported on multiwalled carbon nanotubes
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Enhanced hydrogen sorption properties in the LiBH_4-MgH_2 system catalysed by Ru nanoparticies supported on multiwalled carbon nanotubes

机译：多壁碳纳米管上负载的Ru纳米粒子催化LiBH_4-MgH_2体系中增强的氢吸附性能

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摘要

The LiBH_4-MgH_2 system has a high reversible hydrogen storage capacity. However, the hydrogen de/absorption kinetics has to be further enhanced for its practical application. Motivated by the possibility that the metal catalysts facilitating the dissociation and combination of hydrogen molecules and activating Mg-H and B-H bonds, a novel catalyst, ruthenium nanoparticies supported on multiwalled carbon nanotubes (Ru/C) is prepared and its effect on the hydrogen sorption properties of LiBH_4-MgH_2 systems is investigated. The experimental results show that the Ru/C catalyst is active in reducing the dehydrogenation temperature and enhancing the dehydrogenation kinetics. Furthermore, the reversible capacity is also markedly enhanced under moderate conditions, and the catalytically enhanced hydrogen absorption capacity persists well during three de/rehydrogenation cycles.
机译：LiBH_4-MgH_2系统具有高的可逆储氢能力。但是，对于其实际应用，必须进一步提高氢的脱/吸收动力学。由于金属催化剂促进氢分子的解离和结合并激活Mg-H和BH键的可能性，因此，制备了一种新型催化剂，负载在多壁碳纳米管（Ru / C）上的钌纳米颗粒及其对氢吸附的影响。研究了LiBH_4-MgH_2系统的性质。实验结果表明，Ru / C催化剂在降低脱氢温度和增强脱氢动力学方面具有活性。此外，在适度的条件下，可逆容量也显着提高，并且催化增强的氢吸收容量在三个脱氢/再加氢循环中保持良好。

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