Linear discharge model,power losses and overall efficiency of the solid oxide fuel cell with thin film samarium doped ceria electrolyte. Part I: Linear discharge model |
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| Authors: | Tianmu Lv Jiang Li Xiao Dong Ji Yu Baolong Yu Ping Li Xueli Yao Yicheng Zhao Yongdan Li |
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| Affiliation: | 1. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China;2. Tianjin Key Laboratory of Applied Catalysis Science and Technology, Tianjin University, Tianjin 300072, China;3. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China;4. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | In this work, a solid oxide fuel cell with 60 μm samarium doped ceria film as the electrolyte is fabricated with a co-pressing technique. The performance of the cell is measured at 600, 650 and 700 °C. The corresponding maximum power outputs are 236, 331 and 401 mW cm?2, respectively. The measured current–voltage (I–V) curves are straight lines. A linear discharge model is derived based on the Gorelov and Liu modified electromotive force (EMF) equations. The model fits the measured I–V curves with the maximum errors less than 1.5%. The overall activation overpotential of the cell is therefore postulated to be proportional to the polarization current. |
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| Keywords: | Solid oxide fuel cell Samarium doped ceria Thin film electrolyte Linear discharge model |
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