Performance of Solid Oxide Fuel Cell with Gradient-structured Thin-film Cathode Composed of Pulsed-laser-deposited Lanthanum Strontium Manganite-Yttria-stabilized Zirconia Composite
- Performance of Solid Oxide Fuel Cell with Gradient-structured Thin-film Cathode Composed of Pulsed-laser-deposited Lanthanum Strontium Manganite-Yttria-stabilized Zirconia Composite
- 명두환; 홍종일; 황재연; 이종호; 이해원; 김병국; 조성걸; 손지원
- Solid oxide fuel cell; LSM-YSZ nano-composite; Gradient-structured thin-film cathode; Pulsed laser deposition
- Issue Date
- 한국세라믹학회지; Journal of the Korean Ceramic Society
- VOL 48, NO 6, 487-492
- 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.
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