Influence of the phase evolution and hydrogen storage behaviors of Mg-based alloy catalyzed by Gd-Fe compound

Song, Fei; Tian, Chenlei; Chen, Chen; Du, Ming; Song, Kuikui

doi:10.1016/j.est.2024.111390

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Transition metal-engineered magnesium-based materials for advanced hydrogen storage: From multifaceted mechanisms to state-of-the-art systems

Xu,

Zhou,

et al. 2025

Journal of Environmental Chemical Engineering

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Transition metal-engineered magnesium-based materials for advanced hydrogen storage: From multifaceted mechanisms to state-of-the-art systems

Xu,

Zhou,

et al. 2025

Journal of Environmental Chemical Engineering

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Hydrogen Storage in Mg–Ni-Type Alloys with La and Sm Incorporation

Chen,

Yong,

Wang

et al. 2024

ACS Appl. Energy Mater.

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The addition of rare earth elements lanthanum and samarium to Mg−Ni-type alloys enhanced the hydrogen absorption and desorption kinetics. The microstructures of these alloys were characterized by using XRD, SEM, TEM, HTREM, and SAED methods. PCT equipment was employed to test the hydrogen storage performance. It was observed that Mg 96 NiLa 3 alloys exhibited a more uniform and refined phase distribution, credited to the grain refinement effect triggered by Mg 17 La 2 . Additionally, the Mg 96 NiLa 3 alloy demonstrated a significant hydrogen storage capacity, with hydrogen release reaching 6.2 wt % at 593 K, compared to 5.4 wt % for the Mg 96 NiSm 3 alloy at the same temperature. The activation energies of dehydrogenation for Mg 96 NiLa 3 and Mg 96 NiSm 3 were 99.69 and 97.53 kJ/mol, respectively, with no significant difference considering errors. Similarly, the enthalpies of dehydrogenation were 72.9 kJ/mol of H 2 for Mg 96 NiLa 3 and 78 kJ/mol of H 2 for Mg 96 NiSm 3 , indicating no notable distinction in the thermodynamic properties of the two alloys. Thus, the enhancement of the thermodynamic properties of Mg−Ni-type alloys by rare earth elements La and Sm appears to be insignificant.

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Optimizing Hydrogen Storage Performance of Mg-Ni-Type Alloys with La and Sm Incorporation

Chen,

Yong,

Wang

et al. 2024

Preprint

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Influence of the phase evolution and hydrogen storage behaviors of Mg-based alloy catalyzed by Gd-Fe compound

Cited by 3 publications

References 50 publications

Transition metal-engineered magnesium-based materials for advanced hydrogen storage: From multifaceted mechanisms to state-of-the-art systems

Transition metal-engineered magnesium-based materials for advanced hydrogen storage: From multifaceted mechanisms to state-of-the-art systems

Hydrogen Storage in Mg–Ni-Type Alloys with La and Sm Incorporation

Optimizing Hydrogen Storage Performance of Mg-Ni-Type Alloys with La and Sm Incorporation

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