Noh, Ho-Sung Hwang, Jaeyeon Yoon, Kyungjoong Kim, Byung-Kook Lee, Hae-Weon Lee, Jong-Ho Son, Ji-Won 2024-01-20T12:30:33Z 2024-01-20T12:30:33Z 2021-09-04 2013-05-15 0378-7753 https://pubs.kist.re.kr/handle/201004/128054 To reduce the lateral conduction loss of thin-film-processed lanthanum strontium cobaltite (LSC) cathodes, the optimization of the current collection configuration is investigated. By increasing the number of the ribs in the metallic interconnects (MIC) and reducing the gap between the ribs, the lateral conduction distance at the cathode can be decreased, and as a result, cell performance can be improved by more than 30%. In addition, by changing the contact material from platinum to more resilient gold, the ohmic area specific resistance (ASR) is significantly reduced by the increase in effective contact area due to the deformation of the gold mesh. Furthermore, when a gold mesh with a finer grid size is used, the polarization ASR is decreased as well because the charge drainage can be improved by the enhanced current collection. With the optimization of the current collection, the cell performance is improved by a factor of 1.6 in comparison with that of the original test configuration: A power density of 562 mW cm(-2) at 0.7 V and 600 degrees C is obtained with only approximately 2-mu m-thick LSC cathodes. (C) 2012 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV OXIDE FUEL-CELLS PULSED-LASER DEPOSITION PERFORMANCE ELECTROLYTE STABILITY SOFC Optimization of current collection to reduce the lateral conduction loss of thin-film-processed cathodes Article 10.1016/j.jpowsour.2012.12.059 1 JOURNAL OF POWER SOURCES, v.230, pp.109 - 114 JOURNAL OF POWER SOURCES 230 109 114 scie scopus 000315606000017 2-s2.0-84872252816 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article OXIDE FUEL-CELLS PULSED-LASER DEPOSITION PERFORMANCE ELECTROLYTE STABILITY SOFC Thin-film-processed cathode Solid-oxide fuel cell Lateral conduction loss Current collection Contact material