Kim, Hyoungchul Hong, Jongsup Yoon, Kyung Joong Son, Ji-Won Lee, Jong-Ho Kim, Byung-Kook Lee, Hae-Weon 2024-01-20T04:30:42Z 2024-01-20T04:30:42Z 2021-09-05 2016-05 0363-907X https://pubs.kist.re.kr/handle/201004/124122 We demonstrate the high-performance and robust operation of anode-supported solid oxide fuel cells under a mixed-gas atmosphere applying a novel cell structure and characterization method, useful for minimizing the conventional problems of mixed-gas operation with anode-supported solid oxide fuel cells. To achieve the exothermic methane (CH4) partial oxidation and sufficient difference in oxygen partial pressure even in mixed-gas mode, a composite of metallic rhodium and cerium dioxide (CeO2) was chosen as the optimized reforming and oxygen barrier layer after the comprehensive catalytic experiment. We also obtained increased cell operation reliability through the combination of anode pre-reduction, an optimized material system, and a customized characterization jig (including cathode-ahead layout and impinging jet flow). According to the cell test at 600 degrees C under a feeding gas of CH4 and O-2, an open-circuit voltage and maximum power density of 0.916V and 0.422W/cm(2), respectively, were successfully achieved. Copyright (c) 2015 John Wiley & Sons, Ltd. English WILEY SINGLE-CHAMBER SOFC FLOW GEOMETRY MICRO-STACK ELECTROLYTE METHANE DESIGN CATHODE CERIA High-performance and robust operation of anode-supported solid oxide fuel cells in mixed-gas atmosphere Article 10.1002/er.3465 1 INTERNATIONAL JOURNAL OF ENERGY RESEARCH, v.40, no.6, pp.726 - 732 INTERNATIONAL JOURNAL OF ENERGY RESEARCH 40 6 726 732 scie scopus 000373918500002 2-s2.0-84952690884 Energy & Fuels Nuclear Science & Technology Energy & Fuels Nuclear Science & Technology Article SINGLE-CHAMBER SOFC FLOW GEOMETRY MICRO-STACK ELECTROLYTE METHANE DESIGN CATHODE CERIA single-chamber SOFCs mixed-gas operation partial oxidation methane reforming barrier layer