Influence of Small Defects Produced in Electrolytes during Manufacturing Processes on Operated SOFCs
Influence of Small Defects Produced in Electrolytes during Manufacturing Processes on Operated SOFCs
复制标题
制造过程中电解质产生的小缺陷对运行的 SOFC 的影响
DOI：
10.1149/06801.2421ecst
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
H. Yugami
中科院分区：
文献类型：
--
作者：
S. Onuki;F. Iguchi;M. Shimizu;T. Kawada;H. Yugami
利用原位拉曼散射光谱技术对制造过程中引入的穿透孔气体泄漏的影响进行了实验评估。气相色谱分析阳极和阴极之间的压力差表明，气体通过孔的泄漏以气体通过阳极扩散为主，并且压力差不影响气体泄漏量。在有孔的操作电池中进行的现场测量显示，泄漏的H2与孔周围的空气之间发生了燃烧，该孔的O2分压不足以降低NiO，并且孔周围的温度升高了近10℃。相反，没有观察到对应力分布的影响。
The influence of gas leakage through penetrated holes introduced during fabrication was experimentally evaluated using in-situ Raman scattering spectroscopy. Gas chromatography analysis of pressure differences between the anode and the cathode revealed that the gas leakage through the holes was dominated by gas diffusion through the anode, and that the pressure difference did not influence the amount of gas leakage. In-situ measurements in an operated cell with a hole revealed combustion between leaked H2 and air occurred around the hole, the O2 partial pressure at this hole was not sufficiently low to reduce NiO, and the temperature increased by almost 10 C around the hole. In contrast, no influence on stress distributions was observed.