| 中温固体氧化物燃料电池的纳米LSM-SDC复合阴极 |
| Intermediate Temperature Solid Oxide Fuel Cell Composite Cathodes Consisting of Nanostructured LSM and SDC Particles |
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| 摘要: 阴极粒子纳米化可以提高固体氧化物燃料电池的性能，通常使复合阴极的单一相(催化剂或电解质)纳米化。本工作报道双相纳米化的新型(La0.85Sr0.15)0.9MnO3(LSM)-Sm0.2Ce0.8O1.9(SDC)复合阴极。扫描电镜照片显示，纳米LSM和SDC颗粒均匀附着在多孔LSM-SDC电极骨架的表面。交流阻抗研究表明，600 ℃时，该阴极界面极化阻抗仅为0.93 Ω·cm2，性能优于其他类型的LSM-SDC复合阴极。以这种新型LSM-SDC复合纳米电极为阴极、稳定的氧化锆为电解质的单电池，在600、650和700 ℃最大输出功率分别为114、218和348 mW·cm-2。 |
| 关键词: 固体氧化物燃料电池 交替浸渍 纳米粒子 复合阴极 |
| 基金项目: |
| Abstract: Composites with nanostructured electrocatalyst or electrolyte particles usually exhibit highly electrochemical activity as cathodes for intermediate-temperature solid oxide fuel cells (SOFCs). In this work, composites consisting of nanostructured (La0.85Sr0.15)0.9MnO3 (LSM) and nanostructured Sm0.2Ce0.8O1.9(SDC) particles are fabricated using an alternative impregnation method as SOFC cathodes. Scanning Electron Microscopy reveals that both LSM and SDC particles are less than 100 nm and uniformly distributed onto the inner surface of the porous LSM-SDC backbones. At 600 ℃, the interfacial polarization resistance is only 0.93 Ω·cm2 when stabilized zirconia is used as the electrolyte substrate. Anode-supported cells with the nanostructured LSM-SDC cathodes and zirconia-based electrolytes show peak power densities of 114, 218 and 348 mW·cm-2 at 600, 650, and 700 ℃, respectively. |
| Keywords: solid oxide fuel cell alternative impregnation nanoparticle composite cathode |
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| 张 瀚,夏长荣.中温固体氧化物燃料电池的纳米LSM-SDC复合阴极[J].无机化学学报,2010,26(10):1875-1879. |
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