화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2020년 가을 (10/14 ~ 10/16, e-컨퍼런스)
권호 26권 1호, p.416
발표분야 에너지 환경
제목 Improvement of Long-term Performance Stability of Molten Carbonate Fuel Cell Using ZrO2 ALD Coated Cathode
초록 Molten carbonate fuel cell (MCFC) is a high-temperature fuel cell for power plants. Since MCFC is operated at above 600 °C, an inexpensive catalyst can be used instead of Pt, but the lifetime of MCFC is limited due to the degradation of components. The cathode of MCFC has a porous structure for contacting gas and electrolyte. The reaction sites are reduced by grain growth and Ni dissolution during long-term operation. Therefore, to improve the long-term performance stability of MCFC, a coating to the cathode surface is proposed with preventing the grain growth and the Ni dissolution. In this study, a ZrO2 coated cathode was fabricated by atomic layer deposition to improve the long-term performance stability of MCFC. To verify the effect of ZrO2 coating on the performance, a single cell was fabricated with an uncoated cathode and a ZrO2 coated cathode, respectively, and operated for about 2,000 hours at 600 °C with a current density of 150 mA/cm2. During operation, the cell using the ZrO2 coated cathode coated shows a more stable performance than the cell using the uncoated cathode. It is also confirmed that the degradation rate of cell performance is dramatically decreased.
저자 김도형1, 김기영1, 임성남1, 우주영1, 한학수2, 송신애1
소속 1한국생산기술(연), 2연세대
키워드 에너지; 신재생
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