Hydrogen sorption behaviour of Mg-5wt.%La alloys after the initial hydrogen absorption process

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dc.contributor.authorKim, MJen_AU
dc.contributor.authorTan, XFen_AU
dc.contributor.authorGu, QFen_AU
dc.contributor.authorMcDonald, SDen_AU
dc.contributor.authorAli, Yen_AU
dc.contributor.authorMatsumura, Sen_AU
dc.contributor.authorNogita, Ken_AU
dc.date.accessioned2022-05-03T02:29:17Zen_AU
dc.date.available2022-05-03T02:29:17Zen_AU
dc.date.issued2022-04-29en_AU
dc.date.statistics2022-04-22en_AU
dc.description.abstractIn our earlier study, it has been shown that trace Na additions can improve the reaction kinetics of Mg–5%La (wt.%) alloys during the first absorption. However, the subsequent hydrogen desorption/absorption process of the Mg–5%La after the first absorption has not been investigated. In this study, we have investigated the hydrogen sorption behaviour of the Mg–5%La alloy after the first absorption in terms of phase evolution, and lattice expansion properties during desorption as function of temperature using in-situ synchrotron Powder X-ray Diffraction (PXRD) and in-situ High Voltage Transmission Electron Microscopy (HVTEM). Two distinct phase evolutions, a continuous phase transformation of LaH3 → LaH2 + ½ H2 (from 250 °C) and decomposition of MgH2 → Mg + H2 (between 440 and 460 °C) were identified during the desorption. It is determined that this alloy is cyclable in the absence of Mg12La intermetallic during the subsequent absorption/desorption cycling after the first hydrogen absorption. © 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltden_AU
dc.identifier.citationKim, M., Tan, X. F., Gu, Q., McDonald, S. D., Ali, Y., Matsumura, S., & Nogita, K. (2022). Hydrogen sorption behaviour of Mg-5wt.%La alloys after the initial hydrogen absorption process. International Journal of Hydrogen Energy, 47(36), 16132-16143. doi:10.1016/j.ijhydene.2022.03.102 en_AU
dc.identifier.issn0360-3199en_AU
dc.identifier.issue36en_AU
dc.identifier.journaltitleInternational Journal of Hydrogen Energyen_AU
dc.identifier.pagination16132-16143en_AU
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2022.03.102en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13094en_AU
dc.identifier.volume47en_AU
dc.language.isoenen_AU
dc.publisherElsevier B. V.en_AU
dc.subjectAlloysen_AU
dc.subjectHydrogen storageen_AU
dc.subjectMaterialsen_AU
dc.subjectHydrogenen_AU
dc.subjectAbsorptionen_AU
dc.subjectDesorptionen_AU
dc.subjectDiffractionen_AU
dc.subjectTransmission electron microscopyen_AU
dc.titleHydrogen sorption behaviour of Mg-5wt.%La alloys after the initial hydrogen absorption processen_AU
dc.typeJournal Articleen_AU
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