Exploring halide destabilised calcium hydride as a high-temperature thermal battery
dc.contributor.author | Sofianos, M. Veronica | |
dc.contributor.author | Randall, Samuel | |
dc.contributor.author | Paskevicius, Mark | |
dc.contributor.author | Aguey-Zinsou, K.F. | |
dc.contributor.author | Rowles, Matthew | |
dc.contributor.author | Humphries, Terry | |
dc.contributor.author | Buckley, Craig | |
dc.date.accessioned | 2021-01-05T07:39:37Z | |
dc.date.available | 2021-01-05T07:39:37Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Sofianos, 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.uri | http://hdl.handle.net/20.500.11937/82254 | |
dc.identifier.doi | 10.1016/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.language | English | |
dc.publisher | ELSEVIER SCIENCE SA | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/LP150100730 | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/FT160100303 | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/LE0775551 | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/LE0989180 | |
dc.relation.sponsoredby | http://purl.org/au-research/grants/arc/LE0775553 | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject | Science & Technology | |
dc.subject | Physical Sciences | |
dc.subject | Technology | |
dc.subject | Chemistry, Physical | |
dc.subject | Materials Science, Multidisciplinary | |
dc.subject | Metallurgy & Metallurgical Engineering | |
dc.subject | Chemistry | |
dc.subject | Materials Science | |
dc.subject | Calcium hydride | |
dc.subject | Destabilisation | |
dc.subject | Thermochemical heat storage | |
dc.subject | Concentrated solar power | |
dc.subject | CONCENTRATING SOLAR POWER | |
dc.subject | ENERGY-STORAGE-SYSTEMS | |
dc.subject | X-RAY-DIFFRACTION | |
dc.subject | OF-THE-ART | |
dc.subject | METAL-HYDRIDES | |
dc.subject | DECOMPOSITION | |
dc.subject | GENERATION | |
dc.subject | EXPANSION | |
dc.subject | PLANTS | |
dc.subject | CAHCL | |
dc.title | Exploring halide destabilised calcium hydride as a high-temperature thermal battery | |
dc.type | Journal Article | |
dcterms.source.volume | 819 | |
dcterms.source.issn | 0925-8388 | |
dcterms.source.title | Journal of Alloys and Compounds | |
dc.date.updated | 2021-01-05T07:39:36Z | |
curtin.department | John de Laeter Centre (JdLC) | |
curtin.department | School of Electrical Engineering, Computing and Mathematical Sciences (EECMS) | |
curtin.accessStatus | Open access | |
curtin.faculty | Faculty of Science and Engineering | |
curtin.contributor.orcid | Rowles, Matthew [0000-0002-7448-6774] | |
curtin.contributor.orcid | Paskevicius, Mark [0000-0003-2677-3434] | |
curtin.contributor.orcid | Humphries, Terry [0000-0003-1015-4495] | |
curtin.contributor.orcid | Buckley, Craig [0000-0002-3075-1863] | |
curtin.contributor.orcid | Sofianos, M. Veronica [0000-0002-9654-1463] | |
curtin.contributor.researcherid | Paskevicius, Mark [K-1638-2013] | |
curtin.contributor.researcherid | Buckley, Craig [B-6753-2013] | |
curtin.identifier.article-number | ARTN 153340 | |
dcterms.source.eissn | 1873-4669 | |
curtin.contributor.scopusauthorid | Rowles, Matthew [24476696900] | |
curtin.contributor.scopusauthorid | Paskevicius, Mark [23025599100] | |
curtin.contributor.scopusauthorid | Humphries, Terry [12798136600] | |
curtin.contributor.scopusauthorid | Buckley, Craig [56412440100] [7202815196] |