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- Title
一种高抗湿的二氧化锡室温氢敏陶瓷的制备与研究.
- Authors
朱 胜; 李鹏程; 陈万平
- Abstract
The influence of humidity is one of the major challenges for the application of room-temperature hydrogen materials based on semiconducting metal oxides. Pt-SnO2 nanocomposite ceramics were prepared with SnO2 nanoparticles and Pt powder using traditional ceramic preparation method. This ceramic materials show a sensitivity up to 150 at 1% H2 in air under 50% relative humidity (RH) at room temperature. However, its response to low concentration of hydrogen (≤0.1%) at moderate humidity (50% RH) is largely suppressed. SnO2 agglomerate powder is also used as raw material to prepare Pt-SnO2 nanocompositeceramics, which surprisingly show much higher sensitivities of 850 and 450 under 50% and 70% RH respectively at 1% H2 in air. For low hydrogen concentration (≤0.1%), it also maintains remarkable hydrogen sensing capabilities. At 50% and 70% RH, the sensitivity to 0.04% H2 in air is 5 and 4.1 respectively. Obviously, these materials have high humidity tolerance and improved sensing capabilities. Microstructure analysis show that there are many agglomerates in the ceramics, the non-uniform microstructures play an important role in moisture resistance.
- Publication
Electronic Components & Materials, 2019, Vol 38, Issue 4, p48
- ISSN
1001-2028
- Publication type
Article
- DOI
10.14106/j.cnki.1001-2028.2019.04.008