Enhanced performance of a single-chamber solid oxide fuel cell with an SDC-impregnated cathode |
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Authors: | Bo Wei Zhe Lü Xiqiang Huang Minliang Liu Kongfa Chen Wenhui Su |
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Affiliation: | 1. Center for Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China;2. Department of Condensed Matter Physics, Jilin University, Changchun 130023, PR China;3. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, PR China |
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Abstract: | The electrochemical performance of anode-supported single-chamber solid oxide fuel cells (SC-SOFCs) with and without SDC-impregnated cathodes was compared in a diluted methane–oxygen mixture. These cells were made of conventional materials including yttrium-stabilized zirconia (YSZ) thin film, a Ni + YSZ anode and a La0.7Sr0.3MnO3 (LSM) cathode. Our results showed that the cell performance was greatly enhanced with the SDC-impregnated LSM cathode. At a furnace temperature of 750 °C, the maximum power density was as high as 404 mW cm−2 for a CH4 to O2 ratio of 2:1, which was 4.0 times higher than the cell with a pure LSM cathode (100 mW cm−2). The overall polarization resistance of the impregnated cell was 1.6 Ω cm2, which was much smaller than that of the non-impregnated one (4.2 Ω cm2). The impregnation introduced SDC nanoparticles greatly extended the electrochemical active zone and hence greatly improved the cell performance. |
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Keywords: | Single-chamber solid oxide fuel cells Anode-supported Ion impregnation La0 7Sr0 3MnO3 Electrochemical performance |
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