Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage
© 2016 The Royal Society of Chemistry. Lithium hydride destabilised with aluminium, LiH-Al (1:1 mole ratio) was systematically studied and its suitability as a thermal energy storage system in Concentrating Solar Power (CSP) applications was assessed. Pressure composition isotherms (PCI) measured be...
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| Format: | Journal Article |
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Royal Society of Chemistry
2016
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| Online Access: | http://purl.org/au-research/grants/arc/LP150100730 http://hdl.handle.net/20.500.11937/46052 |
| _version_ | 1848757453691289600 |
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| author | Javadian, Payam Sheppard, Drew Jensen, T. Buckley, Craig |
| author_facet | Javadian, Payam Sheppard, Drew Jensen, T. Buckley, Craig |
| author_sort | Javadian, Payam |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2016 The Royal Society of Chemistry. Lithium hydride destabilised with aluminium, LiH-Al (1:1 mole ratio) was systematically studied and its suitability as a thermal energy storage system in Concentrating Solar Power (CSP) applications was assessed. Pressure composition isotherms (PCI) measured between 506 °C and 652 °C were conducted to investigate the thermodynamics of H2 release. Above the peritectic temperature (596 °C) of LiAl, PCI measurements were not consistently reproducible, possibly due to the presence of a molten phase. However, below 596 °C, the hydrogen desorption enthalpy and entropy of LiH-Al was ?Hdes = 96.8 kJ (mol H2)-1 and ?Sdes = 114.3 J (K mol H2)-1, respectively LiH(s) at 956 °C, ?Hdes = 133.0 kJ (mol H2)-1 and ?Sdes = 110.0 J (K mol H2)-1. Compared to pure LiH, the Li-Al-H system has a reduced operating temperature (1 bar H2 pressure at T ~ 574 °C) that, combined with favourable attributes such as high reversibility, good kinetics and negligible hysteresis, makes the Li-Al-H system a potential candidate for solar thermal energy storage applications. Compared to pure LiH, the addition of Al can reduce the cost of the raw materials by up to 44%. This cost reduction is insufficient for next generation CSP but highlights the potential to improve the properties and cost of high temperature hydrides via destabilisation. |
| first_indexed | 2025-11-14T09:28:20Z |
| format | Journal Article |
| id | curtin-20.500.11937-46052 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:28:20Z |
| publishDate | 2016 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-460522023-02-02T03:24:11Z Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage Javadian, Payam Sheppard, Drew Jensen, T. Buckley, Craig © 2016 The Royal Society of Chemistry. Lithium hydride destabilised with aluminium, LiH-Al (1:1 mole ratio) was systematically studied and its suitability as a thermal energy storage system in Concentrating Solar Power (CSP) applications was assessed. Pressure composition isotherms (PCI) measured between 506 °C and 652 °C were conducted to investigate the thermodynamics of H2 release. Above the peritectic temperature (596 °C) of LiAl, PCI measurements were not consistently reproducible, possibly due to the presence of a molten phase. However, below 596 °C, the hydrogen desorption enthalpy and entropy of LiH-Al was ?Hdes = 96.8 kJ (mol H2)-1 and ?Sdes = 114.3 J (K mol H2)-1, respectively LiH(s) at 956 °C, ?Hdes = 133.0 kJ (mol H2)-1 and ?Sdes = 110.0 J (K mol H2)-1. Compared to pure LiH, the Li-Al-H system has a reduced operating temperature (1 bar H2 pressure at T ~ 574 °C) that, combined with favourable attributes such as high reversibility, good kinetics and negligible hysteresis, makes the Li-Al-H system a potential candidate for solar thermal energy storage applications. Compared to pure LiH, the addition of Al can reduce the cost of the raw materials by up to 44%. This cost reduction is insufficient for next generation CSP but highlights the potential to improve the properties and cost of high temperature hydrides via destabilisation. 2016 Journal Article http://hdl.handle.net/20.500.11937/46052 10.1039/c6ra16983j http://purl.org/au-research/grants/arc/LP150100730 Royal Society of Chemistry restricted |
| spellingShingle | Javadian, Payam Sheppard, Drew Jensen, T. Buckley, Craig Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage |
| title | Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage |
| title_full | Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage |
| title_fullStr | Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage |
| title_full_unstemmed | Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage |
| title_short | Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage |
| title_sort | destabilization of lithium hydride and the thermodynamic assessment of the li-al-h system for solar thermal energy storage |
| url | http://purl.org/au-research/grants/arc/LP150100730 http://hdl.handle.net/20.500.11937/46052 |