{"title":"The catalytic effect of spherical NiMOF on the hydrogen storage performance of MgH2","authors":"","doi":"10.1016/j.ijhydene.2024.10.412","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, a thermally stable spherical NiMOF was introduced into MgH<sub>2</sub> to enhance its hydrogen storage performance. The NiMOF was synthesized via a solvothermal method, and MgH<sub>2</sub>-x wt.% NiMOF (x = 3, 5, 10, 15) composites were prepared by ball milling. The MgH<sub>2</sub>-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% H<sub>2</sub> 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.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hydrogen Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360319924046238","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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.
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