| 摘要 |
A sensor for detecting the presence of gas and methods for use. The sensor has a low sensitivity to relative humidity and high sensitivity to the presence of gases such as carbon monoxide. The sensor is comprised of ternary oxides of the formula Cr2-x(M1zM21-z)xO3 with M1=Fe or Mn, M2=Fe, Mn, or Al, 0.005<=x<=1.95, 0.005<=z<=0.995; ternary oxides of the formula Cr2-x(M1zM21-z)xO3 with M1=Fe or Mn, M2=Ti, 0.005<=x<=1.95, 0.005<=z<=0.45; or quaternary and quinternary oxides of the formula Cr2-x((M1aM2bM3c)zM41-z)xO3 with M1=Fe, M2=Mn, M3=Al, and M4=Ti, 0<=a,b,c<=1, 0.005<=x<=1.95, and 0.005<=z<=0.45.
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