| 简介 |
A gas sensor for detecting and measuring changes in CO2 levels, by means of a change in electrical conductivity. The gas-sensing material may belong to a class of materials of the form A2-xBxO2CO3, A2-xCxO2CO3, A2-x-yBxCyO2CO3, (where A may be La, Nd and/or Pr and is preferably La, B may be one or more rare earth elements different from A, and C may be a transition metal and/or an alkaline-earth metal, with x and y being less than 1, for example 0 < x ≤ 0.8 and 0 < y ≤ 0.1, respectively) with a monoclinic crystallographic phase structure. |
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