Performance of Solid Oxide Fuel Cell with Gradient-structured Thin-film Cathode Composed of Pulsed-laser-deposited Lanthanum Strontium Manganite-Yttria-stabilized Zirconia Composite

Title
Performance of Solid Oxide Fuel Cell with Gradient-structured Thin-film Cathode Composed of Pulsed-laser-deposited Lanthanum Strontium Manganite-Yttria-stabilized Zirconia Composite
Authors
명두환홍종일황재연이종호이해원김병국조성걸손지원
Keywords
Solid oxide fuel cell; LSM-YSZ nano-composite; Gradient-structured thin-film cathode; Pulsed laser deposition
Issue Date
2011-12
Publisher
한국세라믹학회지; Journal of the Korean Ceramic Society
Citation
VOL 48, NO 6, 487-492
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 (Pamb) of 200 mTorr; 2 micron-thick LSM-YSZ deposited at a Pamb 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.
URI
http://pubs.kist.re.kr/handle/201004/41369
ISSN
1229-7801
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