Fast Hydrogen Sorption Kinetics in Mg-VCl 3 Produced by Cryogenic Ball-Milling
Hydrogen storage in Mg/MgH materials is still an active research topic. In this work, a mixture of Mg-15wt.% VCl was produced by cryogenic ball milling and tested for hydrogen storage. Short milling time (1 h), liquid N cooling, and the use of VCl as an additive produced micro-flaked particles appro...
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| creator | Suárez-Alcántara, Karina Flores-Jacobo, Nadia Isabel Osorio-García, Mayara Del Pilar Cabañas-Moreno, José Gerardo |
| description | Hydrogen storage in Mg/MgH
materials is still an active research topic. In this work, a mixture of Mg-15wt.% VCl
was produced by cryogenic ball milling and tested for hydrogen storage. Short milling time (1 h), liquid N
cooling, and the use of VCl
as an additive produced micro-flaked particles approximately 2.5-5.0 µm thick. The Mg-15wt.% VCl
mixture demonstrated hydrogen uptake even at near room-temperature (50 °C). Mg-15wt.% VCl
achieved ~5 wt.% hydrogen in 1 min at 300 °C/26 bar. The fast hydriding kinetics is attributed to a reduction of the activation energy of the hydriding reaction (E
= 63.8 ± 5.6 kJ/mol). The dehydriding reaction occurred at high temperatures (300-350 °C) and 0.8-1 bar hydrogen pressure. The activation energy of the dehydriding reaction is 123.11 ± 0.6 kJ/mol. Cryomilling and VCl
drastically improved the hydriding/dehydriding of Mg/MgH
. |
| format | Article |
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materials is still an active research topic. In this work, a mixture of Mg-15wt.% VCl
was produced by cryogenic ball milling and tested for hydrogen storage. Short milling time (1 h), liquid N
cooling, and the use of VCl
as an additive produced micro-flaked particles approximately 2.5-5.0 µm thick. The Mg-15wt.% VCl
mixture demonstrated hydrogen uptake even at near room-temperature (50 °C). Mg-15wt.% VCl
achieved ~5 wt.% hydrogen in 1 min at 300 °C/26 bar. The fast hydriding kinetics is attributed to a reduction of the activation energy of the hydriding reaction (E
= 63.8 ± 5.6 kJ/mol). The dehydriding reaction occurred at high temperatures (300-350 °C) and 0.8-1 bar hydrogen pressure. The activation energy of the dehydriding reaction is 123.11 ± 0.6 kJ/mol. Cryomilling and VCl
drastically improved the hydriding/dehydriding of Mg/MgH
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materials is still an active research topic. In this work, a mixture of Mg-15wt.% VCl
was produced by cryogenic ball milling and tested for hydrogen storage. Short milling time (1 h), liquid N
cooling, and the use of VCl
as an additive produced micro-flaked particles approximately 2.5-5.0 µm thick. The Mg-15wt.% VCl
mixture demonstrated hydrogen uptake even at near room-temperature (50 °C). Mg-15wt.% VCl
achieved ~5 wt.% hydrogen in 1 min at 300 °C/26 bar. The fast hydriding kinetics is attributed to a reduction of the activation energy of the hydriding reaction (E
= 63.8 ± 5.6 kJ/mol). The dehydriding reaction occurred at high temperatures (300-350 °C) and 0.8-1 bar hydrogen pressure. The activation energy of the dehydriding reaction is 123.11 ± 0.6 kJ/mol. Cryomilling and VCl
drastically improved the hydriding/dehydriding of Mg/MgH
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materials is still an active research topic. In this work, a mixture of Mg-15wt.% VCl
was produced by cryogenic ball milling and tested for hydrogen storage. Short milling time (1 h), liquid N
cooling, and the use of VCl
as an additive produced micro-flaked particles approximately 2.5-5.0 µm thick. The Mg-15wt.% VCl
mixture demonstrated hydrogen uptake even at near room-temperature (50 °C). Mg-15wt.% VCl
achieved ~5 wt.% hydrogen in 1 min at 300 °C/26 bar. The fast hydriding kinetics is attributed to a reduction of the activation energy of the hydriding reaction (E
= 63.8 ± 5.6 kJ/mol). The dehydriding reaction occurred at high temperatures (300-350 °C) and 0.8-1 bar hydrogen pressure. The activation energy of the dehydriding reaction is 123.11 ± 0.6 kJ/mol. Cryomilling and VCl
drastically improved the hydriding/dehydriding of Mg/MgH
.</abstract><cop>Switzerland</cop><pmid>36984406</pmid></addata></record> |
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| source | PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry |
| title | Fast Hydrogen Sorption Kinetics in Mg-VCl 3 Produced by Cryogenic Ball-Milling |
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