Interaction between chromia forming alloy interconnects and air electrode of solid oxide fuel cells
Interaction between chromia forming alloy interconnects and air electrode of solid oxide fuel cells
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DOI：
10.1016/s0167-2738(97)00247-6
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发表时间：
1997-08-01
影响因子：
3.2
通讯作者：
Zhang, JP
中科院分区：
文献类型：
--
作者：
Badwal, SPS;Deller, R;Zhang, JP
当使用铬形成合金作为与电极接触的互连时，固体氧化物燃料电池的性能，特别是在空气侧，会迅速下降。在燃料电池900 ~ 1000℃的工作温度下，研究了铬形成合金对掺杂LaMnO3空气电极性能的影响。在燃料电池堆测试和专门设计的电化学实验中，研究了富铬合金与掺杂LaMnO3空气电极之间的相互作用。实验完成后，采用扫描电子显微镜（SEM）、x射线能谱仪（EDS）、x射线衍射仪（XRD）和光学显微镜对互连物/电极和电极/电解质界面以及互连物、电极和电解质材料进行了检测。基于这些观察，提出了一种细胞性能退化的机制。
The performance of solid oxide fuel cells, especially on the air side, degrades very rapidly when chromia forming alloys are used as interconnects in contact with electrodes. The effect of chromia forming alloys on the performance of doped LaMnO3 air electrode has been studied at the current fuel cell operating temperatures in the vicinity of 900-1000 degrees C. Interactions between a chromium-rich allay and doped LaMnO, were studied during testing of fuel cell stacks as well as in specially designed electrochemical experiments. On completion of these experiments interconnect/electrode and electrode/ electrolyte interfaces as well as interconnect, electrode and electrolyte materials were examined with scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and optical microscopy. A mechanism for cell performance degradation based on these observations has been proposed.