Journal
CERAMICS INTERNATIONAL
Volume 43, Issue 1, Pages 1086-1091Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.10.045
Keywords
Supporting cathode; Direct carbon fuel cell; Tri-composite; Porosity
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Funding
- International Collaborative Energy Technology R&D Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry & Energy, Republic of Korea [20148520120150]
- Korea Institute of Energy Research [B6-2517]
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The purpose of this study was to fabricate a porous supporting cathode for direct carbon solid oxide fuel cells (DCFC). Therefore, the effect of Gd0.1Ce0.9O2-delta (GDC) addition on the phase stability, sintering behavior, thermal expansion, and porosity of La0.65Sr0.3MnO3-delta/(Y2O3)(0.08)(ZrO2)(0.92) (LSM/YSZ) composite was evaluated. The sintering temperature and the porosity of the LSM/YSZ composite were observed to increase with increase in the amount of GDC. An LSM/YSZ/GDC tri-composite with optimized properties was selected to fabricate the tubular cathode-supported DCFCs (LSM/YSZ/GDCIYSZINiO/YSZ) through extrusion, slurry coating, and co-firing. A special chamber was designed for the DCFC operation of the tubular cell. Electrochemical characterization was performed by measuring the polarization curves and electrochemical impedance spectroscopy, using the syngas produced by in situ steam gasification of carbon black.
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