球形 NiMOF 对 MgH2 储氢性能的催化作用

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2024-11-06 DOI:10.1016/j.ijhydene.2024.10.412

Runyu Zhang , Yudong Sui , Yehua Jiang

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引用次数: 0

摘要

本研究在 MgH2 中引入了热稳定球形 NiMOF，以提高其储氢性能。通过溶热法合成了 NiMOF，并通过球磨法制备了 MgH2-x wt.% NiMOF（x = 3、5、10、15）复合材料。MgH2-10 wt% NiMOF 复合材料的性能最佳，在 548 K 和 3.1 MPa 条件下，4.2 MPa 条件下的最大储氢量为 6.4 wt%，5 分钟内吸收 4.0 wt% H2，30 分钟内吸收 5.2 wt%。这种复合材料具有出色的循环稳定性，在 10 个循环后仍能保持 5.0 wt% 的容量。氢化活化能为 64.74 kJ/mol，脱氢活化能为 119.596 kJ/mol。

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The catalytic effect of spherical NiMOF on the hydrogen storage performance of MgH2

In this study, a thermally stable spherical NiMOF was introduced into MgH₂ to enhance its hydrogen storage performance. The NiMOF was synthesized via a solvothermal method, and MgH₂-x wt.% NiMOF (x = 3, 5, 10, 15) composites were prepared by ball milling. The MgH₂-10 wt% NiMOF composite showed the best performance, with a maximum hydrogen storage capacity of 6.4 wt% under 4.2 MPa at 548 K. It absorbed 4.0 wt% H₂ in 5 min and 5.2 wt% in 30 min at 548 K and 3.1 MPa. The composite demonstrated excellent cyclic stability, retaining 5.0 wt% capacity after 10 cycles. Activation energies were 64.74 kJ/mol for hydrogenation and 119.596 kJ/mol for dehydrogenation.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.