期刊
SENSORS
卷 2, 期 9, 页码 366-373出版社
MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL
DOI: 10.3390/s20900366
关键词
gas sensor; CO2 sensor; solid ion electrolyte; sensitivity; doping
In this paper the characteristics of a CuO-BaTiO3 based CO2 gas sensor was investigated. The sensitivity of the CuO-BaTiO3 based CO2 sensor was influenced by doping various metal elements such as Au, Ag, Pt, Pd, Ce, Mg, Sr, La, Zn, Fe and Bi, which were added as a pure metal or in the form of metal oxides. It was found that Ag is the most suitable additive among all substances tested. The Ag-doped CO2 gas sensor has better sensitivity and lower operating temperature, with a detection concentration range of from 100 ppm to 10%. The sensor also shows good stability.
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