Polycarbonate 멤브레인 필터 기반 La0.6Sr0.4CoO3－δ 나노와이어가 적용된 중온형 고체산화물 연료전지 제작
Fabrication of intermediate-temperature solid oxide fuel cells with La0.6Sr0.4CoO3－δ nanowires based on polycarbonate membrane filter
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초록
Enhancing the oxygen surface exchange reaction by increasing the specific surface area of the electrode is a promising structural approach to lowering the operating temperature of solid oxide fuel cells (SOFCs). Nanowire structures, due to their high specific surface area and lower tortuosity of ion and electron conduction pathways, play a vital role in enhancing SOFC electrode performance. In this study, we synthesized La0.6Sr0.4CoO3－δ (LSC) nanowires using a polycarbonate membrane filter as a nanotemplate and applied them to the cathode for intermediate-temperature SOFC fabrication. The fabricated cell exhibited a 10% increase in peak power density at 650℃, achieving 0.506 W·cm-2, compared to cell using only commercial LSC powder. Furthermore, distribution of relaxation times analysis revealed a 15% reduction in area-specific polarization resistance in the mid-frequency range. These findings demonstrated that the electrode with LSC nanowires fabricated through electrospray deposition can significantly improve electrochemical performance of intermediate-temperature SOFC.
Abstract
Enhancing the oxygen surface exchange reaction by increasing the specific surface area of the electrode is a promising structural approach to lowering the operating temperature of solid oxide fuel cells (SOFCs). Nanowire structures, due to their high specific surface area and lower tortuosity of ion and electron conduction pathways, play a vital role in enhancing SOFC electrode performance. In this study, we synthesized La0.6Sr0.4CoO3－δ (LSC) nanowires using a polycarbonate membrane filter as a nanotemplate and applied them to the cathode for intermediate-temperature SOFC fabrication. The fabricated cell exhibited a 10% increase in peak power density at 650℃, achieving 0.506 W·cm-2, compared to cell using only commercial LSC powder. Furthermore, distribution of relaxation times analysis revealed a 15% reduction in area-specific polarization resistance in the mid-frequency range. These findings demonstrated that the electrode with LSC nanowires fabricated through electrospray deposition can significantly improve electrochemical performance of intermediate-temperature SOFC.
참고문헌 (19)
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