Coelectrolysis of steam and CO2 in a solid oxide electrolysis cell with ceramic composite electrodes |
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| Authors: | Sung-Eun Yoon Sang-Hyun Song Jaewon Choi Jae-Yeong Ahn Byung-Kook Kim Jong-Sung Park |
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| Affiliation: | 1. Department of Material Science and Engineering, Myongji University, Yongin, Gyeonggi-do 449-728, South Korea;2. Energy Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, South Korea |
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| Abstract: | Lanthanum strontium vanadate (LSV) was used as the cathode of a solid oxide electrolysis cell (SOEC) containing a yttria-stabilized zirconia (YSZ) electrolyte for the coelectrolysis of steam and CO2. Pd and CeO2 were added to the composite cathode, and the electrolysis mechanism in the coelectrolysis mode changed according to the type of catalyst in the LSV/YSZ composite cathode. The effect of steam on the coelectrolysis performance was investigated by varying the steam vapor pressure. The electrolysis performance under dry CO2 without steam degraded with time under electrochemical reduction conditions owing to the deactivation of catalysts. |
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| Keywords: | Coelectrolysis Solid oxide electrolysis cell Catalyst Lanthanum strontium vanadate |
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