Hydrogen activation and storage properties of laves phase Ti1-xScxMn1.6V0.4 alloys
Ma, Ping1; Li, Wuhui2; Wu, Erdong3
Corresponding AuthorWu, Erdong(
AbstractHydrogen activation, storage properties and associated crystal structures of Ti1-xScxMn1.6-V-0.4 (x = 0, 0.05, 0.1, 0.15, 0.2, 0.25) alloys are investigated by hydrogenation and XRD. The unit-cells of alloys and hydrides expand with Sc content and hydrogen concentration. Minor addition of Sc significantly improves hydrogen activation and storage properties. The plateau pressure decreases, whereas the sloping factor and relative partial molar enthalpy for hydrogenation increase with Sc content. The activation properties strongly depend on the particle sizes. The bulk samples can easily be activated by implementing a hydrogen-induced cracking mechanism, which avoids removal of protective oxide films and compensates the lack of metallic B-metal in catalysis of hydrogen dissociation. Samples with smaller particle sizes are difficult to activate. The unusual particle size effect is interpreted by activation kinetics, and attributed to the high oxygen binding ability of B metals and their contribution to the surface oxide films. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
KeywordHydrogen storage Laves phase Thermodynamics Hydrogen activation Hydrogen induced cracking Particle size effect
Indexed BySCI
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS IDWOS:000701801500012
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWu, Erdong
Affiliation1.Anhui Univ Technol, Anal & Testing Cent, Maanshan 243002, Peoples R China
2.Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471003, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
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Ma, Ping,Li, Wuhui,Wu, Erdong. Hydrogen activation and storage properties of laves phase Ti1-xScxMn1.6V0.4 alloys[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2021,46(69):34389-34398.
APA Ma, Ping,Li, Wuhui,&Wu, Erdong.(2021).Hydrogen activation and storage properties of laves phase Ti1-xScxMn1.6V0.4 alloys.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,46(69),34389-34398.
MLA Ma, Ping,et al."Hydrogen activation and storage properties of laves phase Ti1-xScxMn1.6V0.4 alloys".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46.69(2021):34389-34398.
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