Park, Jung-Hoon Hong, Wan-Shick Yoon, Kyung Joong Lee, Jong-Ho Lee, Hae-Weon Son, Ji-Won 2024-01-20T11:00:25Z 2024-01-20T11:00:25Z 2021-09-04 2014-01 0013-4651 https://pubs.kist.re.kr/handle/201004/127299 Binary nanocomposite thin films of lanthanum strontium cobaltite and gadolinia-doped ceria (La0.6Sr0.4CoO3-delta-Ce0.9Gd0.1O2-delta, LSC-GDC) were prepared using pulsed laser deposition (PLD) for application as cathodes of low-temperature operating solid oxide fuel cell (LT-SOFC). The thin films were fabricated under identical deposition conditions, but the LSC:GDC mixing ratio was varied. The PLD-processed LSC-GDC nanocomposites exhibit different physical and electrochemical properties than do conventional powder-processed composite SOFC cathodes. The LSC:GDC mixing ratio not only alters the composition of the LSC-GDC nanocomposite thin films but also affects their crystallographic orientation and microstructure. The major component of the composite appears to govern the physical properties of the LSC-GDC nanocomposite thin films. The electrochemical properties measured with AC impedance spectroscopy during the half-cell tests reveal that the electrochemical performance of the LSC-GDC nanocomposite cathode is enhanced as the LSC content in the composite increases, which is in contrast to the behavior of powder-processed composite cathodes. The present study provides important insight, into the design and application of thin-film-processed nanocomposite electrodes. (C) 2013 The Electrochemical Society. English ELECTROCHEMICAL SOC INC OXIDE FUEL-CELLS YTTRIA-STABILIZED ZIRCONIA THIN-FILM ELECTRODES COMPOSITE CATHODES LOW-TEMPERATURE THERMAL-EXPANSION NANO-COMPOSITE SOFC PERFORMANCE IMPEDANCE Physical and Electrochemical Characteristics of Pulsed Laser Deposited La0.6Sr0.4CoO3-delta-Ce0.9Gd0.1O2-delta Nanocomposites as a Function of the Mixing Ratio Article 10.1149/2.019401jes 1 JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.161, no.1, pp.F16 - F22 JOURNAL OF THE ELECTROCHEMICAL SOCIETY 161 1 F16 F22 scie scopus 000330680900063 2-s2.0-84888250916 Electrochemistry Materials Science, Coatings & Films Electrochemistry Materials Science Article OXIDE FUEL-CELLS YTTRIA-STABILIZED ZIRCONIA THIN-FILM ELECTRODES COMPOSITE CATHODES LOW-TEMPERATURE THERMAL-EXPANSION NANO-COMPOSITE SOFC PERFORMANCE IMPEDANCE Nanocomposite SOFC Cathode PLD MIxing Ratio