Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>) Materials for Hydrogen Storage
Hydrogen is a promising energy vector; however, its storage in solid-state materials is still an unresolved problem. Hydrogen storage on Mg-based materials is an ongoing research area. Here, five materials, Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub&...
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MDPI AG
2025-04-01
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| Series: | Inorganics |
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| author | Eduardo David Ruiz-Santacruz Paula del Carmen Cintrón Núñez Nidia Libia Torres García Karina Suárez-Alcántara |
| author_facet | Eduardo David Ruiz-Santacruz Paula del Carmen Cintrón Núñez Nidia Libia Torres García Karina Suárez-Alcántara |
| author_sort | Eduardo David Ruiz-Santacruz |
| collection | DOAJ |
| description | Hydrogen is a promising energy vector; however, its storage in solid-state materials is still an unresolved problem. Hydrogen storage on Mg-based materials is an ongoing research area. Here, five materials, Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>), are reported for hydrogen storage. The hydriding and dehydriding reactions in these materials proceed via two steps. The first step is associated with the Mg/MgH<sub>2</sub> equilibrium, while the second step is related to the simultaneous formation of mixtures of hydrided Mg-intermetallics. All of the studied materials demonstrate easy hydriding in mild conditions (15 bar, 300 °C). Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>) can be considered the best material among the studied series, with a hydrogen storage capacity of 3.8 wt. % and a dehydriding onset temperature of 243 °C. The presence of Cu modified the equilibrium pressure of the second hydriding step and induced partial dehydriding at 250 °C in pressure-composition isothermal testing. The presence of Fe favored the hydrogen uptake in the first hydriding reaction, from 0.5 wt. % at the material without Fe to 1.1–2.2 wt. % in the Fe materials. The elements Co, Co, Cu, and Fe demonstrated synergistic effects on hydriding/dehydriding reactions. |
| format | Article |
| id | doaj-art-dd6ebeff17f74544bdf59407b94ca6b0 |
| institution | OA Journals |
| issn | 2304-6740 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
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| series | Inorganics |
| spelling | doaj-art-dd6ebeff17f74544bdf59407b94ca6b02025-08-20T01:56:31ZengMDPI AGInorganics2304-67402025-04-0113513510.3390/inorganics13050135Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>) Materials for Hydrogen StorageEduardo David Ruiz-Santacruz0Paula del Carmen Cintrón Núñez1Nidia Libia Torres García2Karina Suárez-Alcántara3Morelia Unit of Materials Institute Research, National Autonomous University of Mexico, Antigua Carretera a Pátzcuaro No. 8701, Col. Ex Hacienda de San José de la Huerta, Morelia CP 58190, MexicoMorelia Unit of Materials Institute Research, National Autonomous University of Mexico, Antigua Carretera a Pátzcuaro No. 8701, Col. Ex Hacienda de San José de la Huerta, Morelia CP 58190, MexicoMorelia Unit of Materials Institute Research, National Autonomous University of Mexico, Antigua Carretera a Pátzcuaro No. 8701, Col. Ex Hacienda de San José de la Huerta, Morelia CP 58190, MexicoMorelia Unit of Materials Institute Research, National Autonomous University of Mexico, Antigua Carretera a Pátzcuaro No. 8701, Col. Ex Hacienda de San José de la Huerta, Morelia CP 58190, MexicoHydrogen is a promising energy vector; however, its storage in solid-state materials is still an unresolved problem. Hydrogen storage on Mg-based materials is an ongoing research area. Here, five materials, Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>), are reported for hydrogen storage. The hydriding and dehydriding reactions in these materials proceed via two steps. The first step is associated with the Mg/MgH<sub>2</sub> equilibrium, while the second step is related to the simultaneous formation of mixtures of hydrided Mg-intermetallics. All of the studied materials demonstrate easy hydriding in mild conditions (15 bar, 300 °C). Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>) can be considered the best material among the studied series, with a hydrogen storage capacity of 3.8 wt. % and a dehydriding onset temperature of 243 °C. The presence of Cu modified the equilibrium pressure of the second hydriding step and induced partial dehydriding at 250 °C in pressure-composition isothermal testing. The presence of Fe favored the hydrogen uptake in the first hydriding reaction, from 0.5 wt. % at the material without Fe to 1.1–2.2 wt. % in the Fe materials. The elements Co, Co, Cu, and Fe demonstrated synergistic effects on hydriding/dehydriding reactions.https://www.mdpi.com/2304-6740/13/5/135hydrogen storagemagnesium intermetallicsmulticomponent mixturestailoring thermodynamic properties |
| spellingShingle | Eduardo David Ruiz-Santacruz Paula del Carmen Cintrón Núñez Nidia Libia Torres García Karina Suárez-Alcántara Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>) Materials for Hydrogen Storage Inorganics hydrogen storage magnesium intermetallics multicomponent mixtures tailoring thermodynamic properties |
| title | Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>) Materials for Hydrogen Storage |
| title_full | Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>) Materials for Hydrogen Storage |
| title_fullStr | Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>) Materials for Hydrogen Storage |
| title_full_unstemmed | Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>) Materials for Hydrogen Storage |
| title_short | Mg<sub>2</sub>(Co<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Cu<sub>1/3</sub>Fe<sub>1/3</sub>Ni<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Fe<sub>1/3</sub>), Mg<sub>2</sub>(Co<sub>1/3</sub>Cu<sub>1/3</sub>Ni<sub>1/3</sub>), and Mg<sub>2</sub>(Co<sub>1/4</sub>Cu<sub>1/4</sub>Fe<sub>1/4</sub>Ni<sub>1/4</sub>) Materials for Hydrogen Storage |
| title_sort | mg sub 2 sub co sub 1 3 sub fe sub 1 3 sub ni sub 1 3 sub mg sub 2 sub cu sub 1 3 sub fe sub 1 3 sub ni sub 1 3 sub mg sub 2 sub co sub 1 3 sub cu sub 1 3 sub fe sub 1 3 sub mg sub 2 sub co sub 1 3 sub cu sub 1 3 sub ni sub 1 3 sub and mg sub 2 sub co sub 1 4 sub cu sub 1 4 sub fe sub 1 4 sub ni sub 1 4 sub materials for hydrogen storage |
| topic | hydrogen storage magnesium intermetallics multicomponent mixtures tailoring thermodynamic properties |
| url | https://www.mdpi.com/2304-6740/13/5/135 |
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