| 摘要 |
PURPOSE:To stably operate a carbon dioxide sensor up to low temp. by improving the temp. distribution in the sensor, in the carbon dioxide sensor using an alkali ion conductive solid electrolyte (solid electrolyte), by forming the solid electrolyte into a thick film. CONSTITUTION:In a carbon dioxide sensor using a solid electrolyte, the solid electrolyte is not used in a sintered block state but in a thick film state. As a means, the solid electrolyte part is formed into a thick film using a material prepared by mixing the fine powder of the solid electrolyte with a gel or sol like substance containing at least one kind of an element among the constituent elements of the solid electrolyte. Further, The solid electrolyte thick film 12 is formed from a material prepared by gelling a a colloid solution of constituent elements or a mixed material of the solid electrode powder and an org. binder. A reference electrode 3, a detection electrode 10 and a Pt lead wire 7 are provided on the thick film 12 to constitute a thick film type carbon dioxide sensor. |
