BaCo0.4Fe0.4Zr0.1Y0.1O3−σ Cathode Performance for Proton Conducting Solid Oxide Fuel Cells with BaZr0.8−xCexY0.1Yb0.1O3−δ Electrolytes
BaCo0.4Fe0.4Zr0.1Y0.1O3−σ Cathode Performance for Proton Conducting Solid Oxide Fuel Cells with BaZr0.8−xCexY0.1Yb0.1O3−δ Electrolytes
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使用 BaZr0.8–xCexY0.1Yb0.1O3–电解质的质子传导固体氧化物燃料电池的 BaCo0.4Fe0.4Zr0.1Y0.1O3–阴极性能
DOI：
10.1149/2754-2734/ad040c
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Cheng, Zhe
中科院分区：
文献类型：
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作者：
Li, Wenhao;Sozal, Md Shariful;Drozd, Vadym;Durygin, Andriy;Cheng, Zhe
BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3− σ (BCFZY) 是一种用于中温固体氧化物燃料电池的质子、氧离子和电子空穴传导阴极材料。其在潮湿空气中的电极反应机理尚不清楚。在本研究中，在三种相关的质子传导电解质上制造了具有相同 BCFZY 阴极的三种类型的对称电池：BaZr 0.8− x Ce x Y 0.1 Yb 0.1 O 3− δ（x= 0.1、0.4 和 0.7）。阴极在干燥空气中表现出与三种不同电解质类似的性能，但对水分引入的反应不同。假设这些差异与阴极/电解质界面处的相互扩散有关。这种假设得到了不同技术的支持，例如烧制后与不同电解质的混合物中的 BCFZY 阴极的 XRD Rietveld 精修、阴极/电解质界面元素浓度分布的能量色散 X 射线光谱 (EDS) 线扫描，以及用 Ce 代替 Zr 的相关 BaCoFeO 型阴极的电化学测试。
BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3− σ (BCFZY) is a proton, oxygen-ion, and electron-hole conducting cathode material for intermediate temperature solid oxide fuel cells. Its electrode reaction mechanism in air with moisture is not well understood. In this study, three types of symmetrical cells with the same BCFZY cathode were fabricated over three related proton conducting electrolytes: BaZr 0.8− x Ce x Y 0.1 Yb 0.1 O 3− δ (x= 0.1, 0.4, and 0.7). The cathode shows similar performance over three different electrolytes in dry air but different responses to moisture introduction. The differences are hypothesized to relate to the mutual diffusion at the cathode/electrolyte interface. Such a hypothesis is supported by different techniques such as XRD Rietveld refinement of BCFZY cathode in mixtures with different electrolytes after firing, energy-dispersive X-ray spectroscopy (EDS) line scanning for element concentration distribution at the cathode/electrolyte interface, as well as electrochemical test for a related BaCoFeO-type cathode with Zr replaced by Ce.