Physicochemical Characterization of a Na-H-F Thermal Battery Material
Copyright © 2020 American Chemical Society. Fluorine-substituted sodium hydride is investigated for application as a thermal energy storage material inside thermal batteries. A range of compositions of NaHxF1-x (x = 0, 0.5, 0.7, 0.85, 0.95, 1) have been studied using synchrotron radiation powder...
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| Format: | Journal Article |
| Language: | English |
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AMER CHEMICAL SOC
2020
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| Online Access: | http://purl.org/au-research/grants/arc/LP120101848 http://hdl.handle.net/20.500.11937/82255 |
| _version_ | 1848764486664585216 |
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| author | Humphries, Terry Rawal, A. Rowles, Matthew Prause, C.R. Bird, Julianne Paskevicius, Mark Sofianos, M. Veronica Buckley, Craig |
| author_facet | Humphries, Terry Rawal, A. Rowles, Matthew Prause, C.R. Bird, Julianne Paskevicius, Mark Sofianos, M. Veronica Buckley, Craig |
| author_sort | Humphries, Terry |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Copyright © 2020 American Chemical Society.
Fluorine-substituted sodium hydride is investigated for application as a thermal energy storage material inside thermal batteries. A range of compositions of NaHxF1-x (x = 0, 0.5, 0.7, 0.85, 0.95, 1) have been studied using synchrotron radiation powder X-ray diffraction (SR-XRD), near-edge X-ray absorption fine structure spectroscopy (NEXAFS), and nuclear magnetic resonance spectroscopy (NMR), with the thermal conductivity and melting points also being determined. SR-XRD and NMR spectroscopy studies identified that the solid solutions formed during synthesis contain multiple phases rather than a single stoichiometric compound, despite the materials exhibiting a single melting point. As the fluorine content of the materials increases, the Na-H(F) bond length decreases, increasing the stability of the compound. This trend is also observed during melting point analysis where increasing the fluorine content increases the melting point of the material; that is, x < 0.3 (i.e., F- > 0.7) enables melting at temperatures above 750 °C. |
| first_indexed | 2025-11-14T11:20:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-82255 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:20:07Z |
| publishDate | 2020 |
| publisher | AMER CHEMICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-822552021-03-08T04:22:31Z Physicochemical Characterization of a Na-H-F Thermal Battery Material Humphries, Terry Rawal, A. Rowles, Matthew Prause, C.R. Bird, Julianne Paskevicius, Mark Sofianos, M. Veronica Buckley, Craig Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science THERMOCHEMICAL ENERGY-STORAGE SODIUM HYDRIDE THERMODYNAMICS OPTIMIZATION SPECTRA Copyright © 2020 American Chemical Society. Fluorine-substituted sodium hydride is investigated for application as a thermal energy storage material inside thermal batteries. A range of compositions of NaHxF1-x (x = 0, 0.5, 0.7, 0.85, 0.95, 1) have been studied using synchrotron radiation powder X-ray diffraction (SR-XRD), near-edge X-ray absorption fine structure spectroscopy (NEXAFS), and nuclear magnetic resonance spectroscopy (NMR), with the thermal conductivity and melting points also being determined. SR-XRD and NMR spectroscopy studies identified that the solid solutions formed during synthesis contain multiple phases rather than a single stoichiometric compound, despite the materials exhibiting a single melting point. As the fluorine content of the materials increases, the Na-H(F) bond length decreases, increasing the stability of the compound. This trend is also observed during melting point analysis where increasing the fluorine content increases the melting point of the material; that is, x < 0.3 (i.e., F- > 0.7) enables melting at temperatures above 750 °C. 2020 Journal Article http://hdl.handle.net/20.500.11937/82255 10.1021/acs.jpcc.9b10934 English http://purl.org/au-research/grants/arc/LP120101848 http://purl.org/au-research/grants/arc/LP150100730 http://purl.org/au-research/grants/arc/FT160100303 AMER CHEMICAL SOC fulltext |
| spellingShingle | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science THERMOCHEMICAL ENERGY-STORAGE SODIUM HYDRIDE THERMODYNAMICS OPTIMIZATION SPECTRA Humphries, Terry Rawal, A. Rowles, Matthew Prause, C.R. Bird, Julianne Paskevicius, Mark Sofianos, M. Veronica Buckley, Craig Physicochemical Characterization of a Na-H-F Thermal Battery Material |
| title | Physicochemical Characterization of a Na-H-F Thermal Battery Material |
| title_full | Physicochemical Characterization of a Na-H-F Thermal Battery Material |
| title_fullStr | Physicochemical Characterization of a Na-H-F Thermal Battery Material |
| title_full_unstemmed | Physicochemical Characterization of a Na-H-F Thermal Battery Material |
| title_short | Physicochemical Characterization of a Na-H-F Thermal Battery Material |
| title_sort | physicochemical characterization of a na-h-f thermal battery material |
| topic | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science THERMOCHEMICAL ENERGY-STORAGE SODIUM HYDRIDE THERMODYNAMICS OPTIMIZATION SPECTRA |
| url | http://purl.org/au-research/grants/arc/LP120101848 http://purl.org/au-research/grants/arc/LP120101848 http://purl.org/au-research/grants/arc/LP120101848 http://hdl.handle.net/20.500.11937/82255 |