Effect of Co-B on the hydrogen storage properties of LiAlH4

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL Chemical Physics Letters Pub Date : 2024-11-23 DOI:10.1016/j.cplett.2024.141764

Xue Li , Xueping Zheng , Qiuhua Ma , Bo Xu , Yarong Wang , Yuankui Li

引用次数: 0

Abstract

In this work, the effect of Co-B on the dehydrogenation properties of LiAlH₄ was investigated. The results show that, the amount of hydrogen released from LiAlH₄ doped with 5 wt% Co-B was 7.7 wt% at 200 °C, which increased by 6.9 % compared to pure LiAlH₄, and the initial dehydrogenation temperature was reduced by 30 °C. In addition, it can release 5.0 wt% H₂ at 120 °C, which is 5 times the original dehydrogenation. Meanwhile, the scanning electron microscope and X-ray diffractometer showed that the addition of Co-B formed a new active substance AlCo, which could improve the dehydrogenation performance of LiAlH₄.

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Co-B 对 LiAlH4 储氢特性的影响

本文研究了 Co-B 对 LiAlH4 脱氢特性的影响。结果表明，掺杂了 5 wt% Co-B 的 LiAlH4 在 200 ℃ 时释放的氢气量为 7.7 wt%，与纯 LiAlH4 相比增加了 6.9%，初始脱氢温度降低了 30 ℃。此外，它还能在 120 °C 时释放出 5.0 wt% 的 H2，是原来脱氢量的 5 倍。同时，扫描电子显微镜和 X 射线衍射仪显示，Co-B 的加入形成了一种新的活性物质 AlCo，可改善 LiAlH4 的脱氢性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.

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