Thermochemical energy storage by water-splitting via redox reaction of alkali metals
Energy Procedia Volume 49
Page 927-934
published_at 2014
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| File | |
| Title ( eng ) |
Thermochemical energy storage by water-splitting via redox reaction of alkali metals
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| Creator | |
| Source Title |
Energy Procedia
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| Volume | 49 |
| Start Page | 927 |
| End Page | 934 |
| Abstract |
The reaction cycles for water-splitting based on redox reactions of alkali metals are composed of four reactions, which are hydrogen generation by solid-liquid reaction, metal separation by thermolysis, oxygen generation by hydrolysis, and phase transition of the metal. Although all the cycles theoretically require more than 1000 °C in thermodynamic equilibrium condition, the reaction temperature are reduced to below 800 °C by non−equilibrium techniques using phase transition of metal vapor. In this work, thermodynamic analyses are performed by using the parameters such as operating temperature and partial pressures of the products obtained by the experiments to determine that the alkali metal redox cycles are potential hydrogen production technique as thermochemical energy storage.
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| Keywords |
thermochemical hydrogen production
water-splitting
alkali metals
non-equilibrium process
entropy contrl
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| Descriptions |
Selection and peer review by the scientific conference committee of SolarPACES 2013 under responsibility of PSE AG. Final manuscript published as received without editorial corrections.
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| NDC |
Chemistry [ 430 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
Elsevier Ltd.
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| Date of Issued | 2014 |
| Rights |
(c) 2013 The Authors. This is an open access article under the CC BY-NC-ND license.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[DOI] 10.1016/j.egypro.2014.03.100
[ISSN] 1876-6102
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