Effect of pre-calcined ceramic powders at different temperatures on Ni-YSZ anode-supported SOFC cell/stack by low pressure injection molding |
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| Affiliation: | 1. National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China;2. Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China;3. School of Metallurgy Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China;1. School of Chemical Engineering, Nanjing University of Science and Technology, Jiangsu 210094, China;2. Suzhou Huatsing Jingkun New Energy Technology Co., Ltd., Jiangsu 215314, China;3. State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China;1. School of Mechanical Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea;2. High-temperature Energy Materials Research Center, Korea Institute of Science and Technology (KIST), 14-5 Hwarang-ro, Seongbuk-gu, Seoul 02792, Republic of Korea;3. Division of Nano & Information Technology, KIST School, Korea University of Science and Technology (UST), Seoul 02792, Republic of Korea;4. Division of Mechanical System Engineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea;5. Department of Clinical and Experimental Medicine, Linköping University, 58185 Linköping, Sweden;6. Department of Mechanical Engineering, Stanford University, Stanford 94305, USA;7. Department of Materials Science and Engineering, Stanford University, Stanford 94305, USA;1. Key Laboratory for liquid-solid Structural Evolution & Processing of Materials of Ministry of Education, Shandong University, Jinan 250061, PR China;2. School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, Atlanta, GA 30332, United States;1. Energy System Engineering, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea;2. Advanced Combustion Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea;3. STX Heavy Industries Co. Ltd, 533 Dalseo-daero, Dalseo-gu, Daegu, Republic of Korea;1. Tianjin Key Laboratory of Applied Catalysis Science and Technology, State Key Laboratory of Chemical Engineering (Tianjin University), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China;1. The Engineering Laboratory of Advanced Battery and Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;2. The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China;3. New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China;4. CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS), 1295 Dingxi Road, Shanghai 200050, China |
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| Abstract: | Recently, powder injection molding (PIM) has been exploited in the field of solid oxide fuel cells (SOFCs), especially for fabricating anode supports. The current study employs low pressure injection molding (LPIM) to manufacture near net shape, porous, tubular NiO-yttria stabilized zirconia (YSZ) anode supports for anode-supported SOFCs. The study investigates the effects of pre-calcining temperature of the ceramic powder on the microstructure, porosity and electrochemical performance of the cells in detail. Archimedes tests reveal that the porosity of an unreduced NiO-YSZ anode with 900 °C pre-calcined powder reaches a high of 25.9%, approaching the optimal value of 26%. Meanwhile, the anode prepared under this condition possesses more porous and homogeneous microstructures. At 800 °C, with humidified hydrogen as fuel and ambient air as the oxidant, the single cell with 900 °C pre-calcined powder delivers a maximum power density of 671 mW cm?2 while the cell with raw powder, 555 mW cm?2, and the cell with 1000 °C pre-calcined powder, 648 mW cm?2. A four-cell stack is assembled by connecting four single cells in series. The stack could provide a maximum output power of 4.6 W and an open circuit voltage of 3.2 V when fuelled with humidified hydrogen at 800 °C. |
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| Keywords: | SOFC Anode support Pre-calcining temperature Low pressure injection molding Cell stack |
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