摘要
A high-temperature oxygen sensor of limiting current with a porous layer on the cathode to limit the diffusion rate of oxygen is investigated and fabricated. The solid electrolyte is made of Yttria-doped stabilized zirconia (YSZ) and the porous platinum film electrode is deposited on the surface of YSZ. The relation between temperature and oxygen concentration is tested at 629 °-780 °C in a mixture of N2 and O2 with the oxygen concentration being 0-37%. Experimental results show a linear output with the oxygen concentration. The temperature-dependence of its output can be explained by taking into account a mixed diffusion control mechanism of the ordinary and Knudsen diffusion. The operating principle, structure and performance of the sensor are discussed.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 379-384 |
頁數 | 6 |
期刊 | Science in China (Scientia Sinica) Series A |
卷 | 37 |
發行號 | 3 |
出版狀態 | 已出版 - 3月 1994 |