Hoang Viet Phuc Nguyen Kang, Min Goo Ham, Hyung Chul Choi, Sun Hee Han, Jonghee Nam, Suk Woo Hong, Seong-Ahn Yoon, Sung Pil 2024-01-20T08:34:37Z 2024-01-20T08:34:37Z 2021-09-05 2014-10 0013-4651 https://pubs.kist.re.kr/handle/201004/126275 Oxygen solubility is the rate-determining step (RDS) for the reduction reaction on the cathodes of molten carbonate fuel cells (MCFCs), especially at low operating temperatures below 600 degrees C. The poor wetting property of the mixed ionic and electronic conductor (MIEC) coating, such as BYS (Bi1.5Y0.3Sm0.2O3-delta) on the NiO cathode, to the liquid electrolyte creates openings where oxygen absorption and dissociation take place to provide more oxide ionic species to electrochemical reaction sites (ERSs). Therefore, poor wetting MIEC-coated cells showed a much higher power density compared to standard cells, with a factor of 1.4 at the low operating temperature of 550 degrees C. Long-term operation of 2500 hours with a low voltage loss of 9 mV suggests that BYS is a promising alternative cathode material for molten carbonate fuel cells. (C) The Author(s) 2014. Published by ECS. All rights reserved. English ELECTROCHEMICAL SOC INC DUAL-PHASE MEMBRANES OXYGEN SOLUBILITY DIOXIDE SEPARATION COATED CATHODE AC IMPEDANCE POLARIZATION PERFORMANCE ELECTROLYTES ELECTRODES OXIDATION A New Cathode for Reduced-Temperature Molten Carbonate Fuel Cells Article 10.1149/2.0741414jes 1 JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.161, no.14, pp.F1458 - F1467 JOURNAL OF THE ELECTROCHEMICAL SOCIETY 161 14 F1458 F1467 scie scopus 000345975500097 2-s2.0-84923363222 Electrochemistry Materials Science, Coatings & Films Electrochemistry Materials Science Article DUAL-PHASE MEMBRANES OXYGEN SOLUBILITY DIOXIDE SEPARATION COATED CATHODE AC IMPEDANCE POLARIZATION PERFORMANCE ELECTROLYTES ELECTRODES OXIDATION molten carbonate fuel cells wettability MIEC coated cell cathode