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首页> 外文会议>International symposium on solid oxide fuel cells;SOFC-XII >Impedance Analysis of Practical Segmented-in-Series Tubular Solid Oxide Fuel Cells
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Impedance Analysis of Practical Segmented-in-Series Tubular Solid Oxide Fuel Cells

机译：实用分段串联管状固体氧化物燃料电池的阻抗分析

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The individual electrode processes from anode and cathode have been clearly identified from practical impedance spectra with high-frequency inductive impedances for the Mitsubishi segmented-in-series tubular solid oxide fuel cell by combining the distribution of relaxation time (DRT) analysis and the complex nonlinear least square (CNLS) fitting. Anodic gas diffusion process and charge transfer reaction near anodic triple phase boundary (TPB) appear at ca. 0.3 Hz and 1000 Hz, respectively. Cathodic oxygen reduction processes appear at ca. 10 Hz at 700°C, whereas the impedance arc over 10000 Hz is dominated by the cathodic oxygen ion transfer through the LSM/YSZ interface and YSZ of the composite. The results also exhibit an excellent agreement with those from the analysis of difference in impedance spectra.
机译：通过结合弛豫时间（DRT）分析的分布和复杂的非线性，从三菱分段串联管状固体氧化物燃料电池的实际阻抗谱和高频感应阻抗中，可以清楚地识别出阳极和阴极的各个电极过程。最小二乘（CNLS）拟合。大约在阳极三相边界（TPB）附近发生阳极气体扩散过程和电荷转移反应。分别为0.3 Hz和1000 Hz。阴极氧还原过程出现在约。在700°C时为10 Hz，而超过10000 Hz的阻抗电弧主要是通过复合材料的LSM / YSZ界面和YSZ进行的阴极氧离子转移。结果也显示出与阻抗谱差异分析的极好的一致性。

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