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J. Korean Ceram. Soc. > Volume 48(6); 2011 > Article
Journal of the Korean Ceramic Society 2011;48(6): 487.
doi: https://doi.org/10.4191/kcers.2011.48.6.487
PLD 공정으로 제조된 LSM-YSZ 나노복합체층이 포함된 경사구조 박막 공기극을 적용한 SOFC의 성능 분석
명두환, 홍종일1, 황재연, 이종호, 이해원, 김병국, 조성걸2, 손지원
한국과학기술연구원 고온에너지재료연구센터
1연세대학교 신소재공학과
2경상대학교 반도체공학과
Performance of Solid Oxide Fuel Cell with Gradient-structured Thin-film Cathode Composed of Pulsed-laser-deposited Lanthanum Strontium Manganite-Yttria-stabilized Zirconia Composite
Doo-Hwan Myung, Jong-Ill Hong1, Jae-Yeon Hwang, Jong-Ho Lee, Hae-Weon Lee, Byung-Kook Kim, Sung-Gurl Cho2, Ji-Won Son
High-Temperature Energy Materials Research Center, Korea Institute of Science and Technology
1Department of Materials Science and Engineering, Yonsei University
2Department of Semiconductors, Gyeongsang National University
ABSTRACT
The effect of the application of lanthanum strontrium manganite and yttria-stabilized zirconia (LSM-YSZ) nano-composite fabricated by pulsed laser deposition (PLD) as a cathode of solid oxide fuel cell (SOFC) is studied. A gradient-structure thin-film cathode composed of 1 micron-thick LSM-YSZ deposited at an ambient pressure ($P_{amb}$) of 200 mTorr; 2 micron-thick LSM-YSZ deposited at a $P_{amb}$ of 300 mTorr; and 2 micron-thick lanthanum strontium cobaltite (LSC) current collecting layer was fabricated on an anode-supported SOFC with an ~8 micron-thick YSZ electrolyte. In comparison with a 1 micron-thick nano-structure single-phase LSM cathode fabricated by PLD, it was obviously effective to increase triple phase boundaries (TPB) over the whole thickness of the cathode layer by employing the composite and increasing the physical thickness of the cathode. Both polarization and ohmic resistances of the cell were significantly reduced and the power output of the cell was improved by a factor of 1.6.
Key words: Solid oxide fuel cell, LSM-YSZ nano-composite, Gradient-structured thin-film cathode, Pulsed laser deposition
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