Fabrication of symmetrical La0.7Ca0.3Cr0.8Mn0.2O3-δ electrode scaffold-type micro tubular solid oxide fuel cells by electrophoretic deposition
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Symmetrical La0.7Ca0.3Cr0.8Mn0.2O3-δ (LCCM) electrode scaffold-type microtubular solid oxide fuel cells (SOFC) with yttriastabilizedzirconia (YSZ) were fabricated via electrophoretic deposition (EPD). Multi-layers of the LCCM-YSZ anode, an YSZelectrolyte, and an LCCM-YSZ cathode were deposited in consecutive order on a graphite rod via EPD. Since both the cathodeand anode were used with the same material, a single cell could be obtained by a one-step co-firing processing. While electricalconductivity increased with the amount of phosphate ester (PE) as a charging agent, the pH decreased. The thickness of theYSZ electrolyte layer increased with the applied voltage and deposition time. The maximum power density of the symmetricalmicrotubular SOFC single cells with the configuration of LCCM-YSZ anode//YSZ electrolyte//LCCM-YSZ cathode was 106and 141 mW/cm2at 500 and 600 oC, respectively. After the 10th redox cycle, the single cell exhibited no significant performancedegradation.
Abstract
Symmetrical La0.7Ca0.3Cr0.8Mn0.2O3-δ (LCCM) electrode scaffold-type microtubular solid oxide fuel cells (SOFC) with yttriastabilizedzirconia (YSZ) were fabricated via electrophoretic deposition (EPD). Multi-layers of the LCCM-YSZ anode, an YSZelectrolyte, and an LCCM-YSZ cathode were deposited in consecutive order on a graphite rod via EPD. Since both the cathodeand anode were used with the same material, a single cell could be obtained by a one-step co-firing processing. While electricalconductivity increased with the amount of phosphate ester (PE) as a charging agent, the pH decreased. The thickness of theYSZ electrolyte layer increased with the applied voltage and deposition time. The maximum power density of the symmetricalmicrotubular SOFC single cells with the configuration of LCCM-YSZ anode//YSZ electrolyte//LCCM-YSZ cathode was 106and 141 mW/cm2at 500 and 600 oC, respectively. After the 10th redox cycle, the single cell exhibited no significant performancedegradation.
참고문헌 (16)
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