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J. Korean Ceram. Soc. > Volume 44(10); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(10): 542.
doi: https://doi.org/10.4191/kcers.2007.44.1.542
SDC계 단실형 고체산화물 연료전지용 SDC-NiO 복합음극의 최적 환원 조건
민지현, 안성진, 문주호, 김주선1
연세대학교 세라믹 공학과
1한국과학기술연구원 에너지재료연구단
Optimum Reduction Condition of SDC-NiO Composite Anode for SDC-based Single Chamber Solid Oxide Fuel Cells
Ji-Hyun Min, Sung-Jin Ahn, Joo-Ho Moon, Joo-Sun Kim1
Department of Materials Science & Engineering, Yonsei University
1Center for Energy Materials Research, KIST
ABSTRACT
We have determined an optimal reduction condition for NiO-based anode in single chamber solid oxide fuel cells that involve samaria-doped ceria (SDC) as an electrolyte. Optimal condition should not only induce sufficient reduction of NiO to Ni, but also prevent the reduction of SDC electrolyte in order to achieve high open circuit voltage (OCV) and power output. Thermodynamic consideration allowed us to determine the optimal anode reduction condition as $96%H_2-4%H_2O$ atmosphere at $250^{circ}C$. This finding was in a good agreement with the experimental verifications by monitoring the conductivities of SDC and NiO under different reducing conditions.
Key words: SOFC, Single Chamber, Anode, Reduction, SDC, Thermodynamics
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