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dc.contributor.authorSofianos, M. Veronica
dc.contributor.authorRandall, Samuel
dc.contributor.authorPaskevicius, Mark
dc.contributor.authorAguey-Zinsou, K.F.
dc.contributor.authorRowles, Matthew
dc.contributor.authorHumphries, Terry
dc.contributor.authorBuckley, Craig
dc.date.accessioned2021-01-05T07:39:37Z
dc.date.available2021-01-05T07:39:37Z
dc.date.issued2020
dc.identifier.citationSofianos, M.V. and Randall, S. and Paskevicius, M. and Aguey-Zinsou, K.F. and Rowles, M.R. and Humphries, T.D. and Buckley, C.E. 2020. Exploring halide destabilised calcium hydride as a high-temperature thermal battery. Journal of Alloys and Compounds. 819: Article No. 153340.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/82254
dc.identifier.doi10.1016/j.jallcom.2019.153340
dc.description.abstract

© 2019

CaH2 is a metal hydride with a high energy density that decomposes around 1100 °C at 1 bar of H2 pressure. Due to this high decomposition temperature, it is difficult to utilise this material as a thermal battery for the next generation of concentrated solar power plants, where the currently targeted operational temperature is between 600 and 800 °C. In this study, CaH2 has been mixed with calcium halide salts (CaCl2, CaBr2 and CaI2) and annealed at 450 °C under 100 bar of H2 pressure to form CaHCl, CaHBr and CaHI. These hydride-halide salts incur a thermodynamic destabilisation of their hydrogen release, compared to CaH2, so that they can operate between 600 and 800 °C within practical operating pressures (1–10 bar H2) for thermochemical energy storage. The as-synthesised metal hydrides were studied by in-situ synchrotron X-ray diffraction, temperature programmed desorption and pseudo pressure composition isothermal analysis. Each of the calcium hydride-halide salts decomposed to form calcium metal and a calcium halide salt after hydrogen release. In comparison to pure CaH2, their decomposition reactions were faster when heated up to 850 °C, and the experimental values of the desorbed hydrogen gas were very close to the theoretical ones. All samples after their decomposition showed signs of sintering, which hindered their rehydrogenation reaction.

dc.languageEnglish
dc.publisherELSEVIER SCIENCE SA
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/LP150100730
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/LFT160100303
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/LE0775551
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/LE0989180
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/LE0775553
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectTechnology
dc.subjectChemistry, Physical
dc.subjectMaterials Science, Multidisciplinary
dc.subjectMetallurgy & Metallurgical Engineering
dc.subjectChemistry
dc.subjectMaterials Science
dc.subjectCalcium hydride
dc.subjectDestabilisation
dc.subjectThermochemical heat storage
dc.subjectConcentrated solar power
dc.subjectCONCENTRATING SOLAR POWER
dc.subjectENERGY-STORAGE-SYSTEMS
dc.subjectX-RAY-DIFFRACTION
dc.subjectOF-THE-ART
dc.subjectMETAL-HYDRIDES
dc.subjectDECOMPOSITION
dc.subjectGENERATION
dc.subjectEXPANSION
dc.subjectPLANTS
dc.subjectCAHCL
dc.titleExploring halide destabilised calcium hydride as a high-temperature thermal battery
dc.typeJournal Article
dcterms.source.volume819
dcterms.source.issn0925-8388
dcterms.source.titleJournal of Alloys and Compounds
dc.date.updated2021-01-05T07:39:36Z
curtin.departmentJohn de Laeter Centre (JdLC)
curtin.departmentSchool of Electrical Engineering, Computing and Mathematical Sciences (EECMS)
curtin.accessStatusFulltext not available
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidRowles, Matthew [0000-0002-7448-6774]
curtin.contributor.orcidPaskevicius, Mark [0000-0003-2677-3434]
curtin.contributor.orcidHumphries, Terry [0000-0003-1015-4495]
curtin.contributor.orcidBuckley, Craig [0000-0002-3075-1863]
curtin.contributor.orcidSofianos, M. Veronica [0000-0002-9654-1463]
curtin.contributor.researcheridPaskevicius, Mark [K-1638-2013]
curtin.contributor.researcheridBuckley, Craig [B-6753-2013]
curtin.identifier.article-numberARTN 153340
dcterms.source.eissn1873-4669
curtin.contributor.scopusauthoridRowles, Matthew [24476696900]
curtin.contributor.scopusauthoridPaskevicius, Mark [23025599100]
curtin.contributor.scopusauthoridHumphries, Terry [12798136600]
curtin.contributor.scopusauthoridBuckley, Craig [56412440100] [7202815196]
dc.date.embargoEnd2021-12-11


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