Electro-deposition and re-oxidation of carbon in carbonate containing molten salts
The electrochemical deposition and re-oxidation of solid carbon were studied in CO3(2-) ion-containing molten salts (e.g. CaCl2-CaCO3-LiCl-KCl and Li2CO3-K2CO3) at temperatures between 500 and 800 °C under Ar, CO2 or N2-CO2 atmospheres. The electrode reactions were investigated by thermodynamic anal...
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Royal Society of Chemistry
2014
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my.ums.eprints.194722018-03-23T08:18:14Z https://eprints.ums.edu.my/id/eprint/19472/ Electro-deposition and re-oxidation of carbon in carbonate containing molten salts Happiness V. Ijije Richard C. Lawrence Nancy Julius Siambun Sang, Mun Jeong Daniel A. Jewell Di, Hu Chen, George Zheng QD Chemistry The electrochemical deposition and re-oxidation of solid carbon were studied in CO3(2-) ion-containing molten salts (e.g. CaCl2-CaCO3-LiCl-KCl and Li2CO3-K2CO3) at temperatures between 500 and 800 °C under Ar, CO2 or N2-CO2 atmospheres. The electrode reactions were investigated by thermodynamic analysis, cyclic voltammetry and chronopotentiometry in a three-electrode cell under various conditions. The findings suggest that the electro-reduction of CO3(2-) is dominated by carbon deposition on all three tested working electrodes (Ni, Pt and mild steel), but partial reduction to CO can also occur. Electro-re-oxidation of the deposited carbon in the same molten salts was investigated for potential applications in, for example, direct carbon fuel cells. A brief energy and cost analysis is given based on results from constant voltage electrolysis in a two-electrode cell. Royal Society of Chemistry 2014 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/19472/1/Electro.pdf Happiness V. Ijije and Richard C. Lawrence and Nancy Julius Siambun and Sang, Mun Jeong and Daniel A. Jewell and Di, Hu and Chen, George Zheng (2014) Electro-deposition and re-oxidation of carbon in carbonate containing molten salts. Faraday Discussions, 172. pp. 105-116. ISSN 1359-6640 https://doi.org/10.1039/c4fd00046c |
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QD Chemistry Happiness V. Ijije Richard C. Lawrence Nancy Julius Siambun Sang, Mun Jeong Daniel A. Jewell Di, Hu Chen, George Zheng Electro-deposition and re-oxidation of carbon in carbonate containing molten salts |
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The electrochemical deposition and re-oxidation of solid carbon were studied in CO3(2-) ion-containing molten salts (e.g. CaCl2-CaCO3-LiCl-KCl and Li2CO3-K2CO3) at temperatures between 500 and 800 °C under Ar, CO2 or N2-CO2 atmospheres. The electrode reactions were investigated by thermodynamic analysis, cyclic voltammetry and chronopotentiometry in a three-electrode cell under various conditions. The findings suggest that the electro-reduction of CO3(2-) is dominated by carbon deposition on all three tested working electrodes (Ni, Pt and mild steel), but partial reduction to CO can also occur. Electro-re-oxidation of the deposited carbon in the same molten salts was investigated for potential applications in, for example, direct carbon fuel cells. A brief energy and cost analysis is given based on results from constant voltage electrolysis in a two-electrode cell. |
format |
Article |
author |
Happiness V. Ijije Richard C. Lawrence Nancy Julius Siambun Sang, Mun Jeong Daniel A. Jewell Di, Hu Chen, George Zheng |
author_facet |
Happiness V. Ijije Richard C. Lawrence Nancy Julius Siambun Sang, Mun Jeong Daniel A. Jewell Di, Hu Chen, George Zheng |
author_sort |
Happiness V. Ijije |
title |
Electro-deposition and re-oxidation of carbon in carbonate containing molten salts |
title_short |
Electro-deposition and re-oxidation of carbon in carbonate containing molten salts |
title_full |
Electro-deposition and re-oxidation of carbon in carbonate containing molten salts |
title_fullStr |
Electro-deposition and re-oxidation of carbon in carbonate containing molten salts |
title_full_unstemmed |
Electro-deposition and re-oxidation of carbon in carbonate containing molten salts |
title_sort |
electro-deposition and re-oxidation of carbon in carbonate containing molten salts |
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Royal Society of Chemistry |
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2014 |
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https://eprints.ums.edu.my/id/eprint/19472/1/Electro.pdf https://eprints.ums.edu.my/id/eprint/19472/ https://doi.org/10.1039/c4fd00046c |
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1760229585787551744 |
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13.18916 |