Long-Term Stability for Co-Electrolysis of CO2/Steam Assisted by Catalyst-Infiltrated Solid Oxide Cells

Title
Long-Term Stability for Co-Electrolysis of CO2/Steam Assisted by Catalyst-Infiltrated Solid Oxide Cells
Authors
이종호윤경중정현예정용재홍종섭
Keywords
SOFC; Solid oxide cells; Catalysts infiltration; Co-electrolysis; CO2 conversion; Long-term stability
Issue Date
2018-01
Publisher
한국세라믹학회지; Journal of the Korean Ceramic Society
Citation
VOL 55, NO 1-54
Abstract
This study investigated the long-term durability of catalyst(Pd or Fe)-infiltrated solid oxide cells for CO2/steam co-electrolysis. Fuel-electrode supported solid oxide cells with dimensions of 5 × 5 cm2 were fabricated, and palladium or iron was subsequently introduced via wet infiltration (as a form of PdO or FeO solution). The metallic catalysts were employed in the fuel-electrode to promote CO2 reduction via reverse water gas shift reactions. The metal-precursor particles were well-dispersed on the fuel-electrode substrate, which formed a bimetallic alloy with Ni embedded on the substrate during high-temperature reduction processes. These planar cells were tested using a mixture of H2O and CO2 to measure the electrochemical and gas-production stabilities during 350 h of co-electrolysis operations. The results confirmed that compared to the Fe-infiltrated cell, the Pd-infiltrated cell had higher stabilities for both electrochemical reactions and gas-production given its resistance to carbon deposition.
URI
http://pubs.kist.re.kr/handle/201004/67532
ISSN
1229-7801
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KIST Publication > Article
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