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Diode-type Gas Sensors Fabricated with a Titania Film on a Ti Plate and Pd-Pt Electrodes –Effects of Polymer Coating on the Hydrogen-sensing Properties–

机译:在Ti板和pd-pt电极上用二氧化钛膜制造的二极管型气体传感器 - 聚合物涂层对氢敏感性能的影响 -

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摘要

H2 responses of a diode-type gas sensor fabricated with a TiO2 film prepared by anodization of a Ti plate and Pd-Pt electrodes (Pd-Pt/TiO2) and the effects of polymer coating on the Pd-Pt/TiO 2 sensor were investigated in this study. The H2 response of the Pd-Pt/TiO2 sensor in dry N2 was larger than that in dry air at 250°C, but the addition of moisture into the atmosphere reduced O2 concentration dependence of H2 response. The responses decreased drastically at lower temperature (50°C), but the responses in N2 were larger than those in air under both dry and wet conditions. The coating of polymer on the Pd-Pt/TiO2 sensor increased the H 2 responses in wet air and N2 and reduced O2 concentration dependence of H2 responses.
机译:研究了用钛板阳极氧化制备的TiO2薄膜和Pd-Pt电极(Pd-Pt / TiO2)制成的TiO2膜制成的二极管型气体传感器的H2响应以及聚合物涂层对Pd-Pt / TiO 2传感器的影响在这个研究中。 Pd-Pt / TiO2传感器在干燥的氮气中的H2响应要比在250°C的干燥空气中的H2响应大,但是向大气中添加水分减少了H2响应的O2浓度依赖性。在较低温度(50°C)下,响应急剧下降,但在干燥和潮湿条件下,N2中的响应都比空气中的响应大。 Pd-Pt / TiO2传感器上的聚合物涂层增加了湿空气和N2中的H 2响应,并降低了H2响应的O2浓度依赖性。

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