- SOFC의 YSZ 전해질에 대한 혼합공기극 연구
- ㆍ 저자명
- 이창보,배중면,Lee. Chang-Bo,Bae. Joong-Myeon
- ㆍ 간행물명
- 大韓機械學會論文集. Transactions of the Korean society of mechanical engineers. B. B
- ㆍ 권/호정보
- 2007년|31권 1호|pp.62-67 (6 pages)
- ㆍ 발행정보
- 대한기계학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Optimization of cathode properties for intermediate temperature-operating SOFC (IT-SOFC) is carried out by using composite-type electrode structure in this study. Composite cathode may lower cathode overpotential by enhancing mixed ionic-electronic conductivity. In this study, particularly, LSM/YSZ, LSF/YSZ, LSCF/CGO, and PSC/CGO were selected as cathode materials. LSM/YSZ composite cathode showed the best performance of about 0.9${Omega}cm^2$ at $700^{circ}C$. It is inferred that the resistance is mainly affected by the reactivity between cathode and electrolyte which can cause the formation of resistive phases. Area specific resistance (ASR) characteristics were not changed significantly with decreasing sintering temperature of cathode, because reaction sites were increased even with worse adhesion of cathode on electrolytes.