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• W3011433356 endingPage "136031" @default.
• W3011433356 startingPage "136031" @default.
• W3011433356 abstract "The performance of solid oxide fuel cell (SOFC) can be significantly enhanced using nanostructured cathode obtained by infiltration/impregnation method. However, this method has been limited due to multi-step preparation process and instability of the obtained nanoscale catalyst under long-term operation. We report here a simple, cost-effective and reproducible approach to fabricate nanostructured Sm0.5Sr0.5CoO3-δ (SSC) cathode with enhanced performance and stability. The SSC powders were prepared by a freeze-drying method through a combustion route using Pluronic F-127 as the template. The SSC freeze-drying powders have unique morphology and a significant phase change at 750 °C. The oxygen non-stoichiometry (δ) of the SSC powders is 0.18 at room temperature, while the δ values are 0.66, 0.75 and 0.90 at 600 °C, 700 °C and 800 °C, respectively. The novel structured SSC cathode was prepared by screen-printing and one-step sintering process using the freeze-drying SSC powders. Maximum cell power densities of 0.83 and 1.13 W cm−2 are achieved at 550 °C and 600 °C, respectively for single cells with the novel structured SSC cathode. Moreover, single cells show excellent stability at 600 °C under a current density of 600 mA cm−2 over 250 h. This work expands opportunities to exploit nanotechnology in a wide range of intermediate and low temperature energy conversion devices." @default.
• W3011433356 created "2020-03-23" @default.
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• W3011433356 date "2020-05-01" @default.
• W3011433356 modified "2023-10-16" @default.
• W3011433356 title "Novel structured Sm0.5Sr0.5CoO3-δ cathode for intermediate and low temperature solid oxide fuel cells" @default.
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• W3011433356 doi "https://doi.org/10.1016/j.electacta.2020.136031" @default.
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