Hydrothermally synthesized NiO-samarium doped ceria nano-composite as an anode material for intermediate-temperature solid oxide fuel cells |
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| Authors: | Xueli Yao Ping Li Baolong Yu Fei Yang Jiang Li Yicheng Zhao Yongdan Li |
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| Affiliation: | 1. State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin, 300072, China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China |
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| Abstract: | NiO-Ce0.8Sm0.2O1.9 (Ni-SDC) composite anode powders are synthesized with a hydrothermal technique. The average size of the particles in the anode powder is about 10 nm. Different phases distribute uniformly in the composite. The anode sintered at 700 °C exhibits an electrical conductivity of above 100 S cm?1, three orders of magnitude higher than that of a similar solid-mixed composite anode with the same composition. The anode synthesized through the hydrothermal process also possesses a higher catalytic activity. An SDC-carbonate composite electrolyte-supported single cell with the composite anode exhibits a maximum power density of 738 mW cm?2 at 700 °C with H2 as fuel, much higher than that of a similar cell with a solid-mixed anode. The cell also exhibits a promising stability with methanol as fuel. |
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| Keywords: | Anode Nickel oxide Doped ceria Hydrothermal synthesis Intermediate temperature solid oxide fuel cell Composite electrolyte |
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