A tip-type carbon dioxide gas-sensor probe based on lithium and oxide ionic conductors

A tip-type carbon dioxide gas-sensor probe with a heater element is set up by using the combination of a lithium ionic conductor (LiTi 2 (PO 4 ) 3 +0.2Li 3 PO 4 ) and oxide ionic conductors. Three types of oxide ionic conductors, Bi 2 O 3 -Y 2 O 3 (3 :1), CeO 2 -Gd 2 O 3 (8 :1) and ZrO 2 -Ln 2 O 3 (9 :1) (Ln :Y, Sc) are used. The sensor output with the zirconia- or bismuth oxide-based conductor agrees well with the Nernst relation. The tip-type probe can detect the CO 2 concentration exactly for contents higher than 1000 ppm, even in an atmosphere containing up to 30 vol.% of water vapour.

[1]  Toshio Maruyama,et al.  Electromotive force of the COCO2O2 concentration cell using Na2CO3 as a solid electrolyte at low oxygen partial pressures , 1987 .

[2]  Makoto Egashira,et al.  Carbon Dioxide Sensor Consisting of K 2 CO 3 ‐ Polyethylene Glycol Solution Supported on Porous Ceramics I . Measurements of Carbon Dioxide Sensing Characteristics , 1989 .

[3]  Tatsumi Ishihara,et al.  Application of a Mixed Oxide Capacitor to the Selective Carbon Dioxide Sensor II . Sensing Characteristics of a Oxide Capacitor , 1991 .

[4]  G. Adachi,et al.  Single Surface Sealed Type Carbon Dioxide Gas Sensor Based on a Lithium Ionic Conductor , 1993 .

[5]  Takeshi Kawasato,et al.  Selective CO2 detection with a lithium conductor based sensor. , 1991 .

[6]  Toshihide Murata,et al.  The operating temperature lowering for CO2 gas sensor with a lithium conducting solid electrolyte , 1992 .

[7]  G. Adachi,et al.  CO2 detection with lithium solid electrolyte sensors , 1993 .

[8]  Makoto Egashira,et al.  Carbon Dioxide Sensor Consisting of K 2 CO 3 ‐ Polyethylene Glycol Solution Supported on Porous Ceramics: II . Study of Mechanism by Employing Cyclic Voltammetry , 1989 .

[9]  Y. Sadaoka,et al.  Ionic Conductivity of the Lithium Titanium Phosphate ( Li1 + X M X Ti2 − X ( PO 4 ) 3 , M = Al , Sc , Y , and La ) Systems , 1989 .

[10]  Y. Sadaoka,et al.  Ionic Conductivity of Solid Electrolytes Based on Lithium Titanium Phosphate , 1990 .

[11]  Toshio Maruyama,et al.  Electromotive force of a COCO2 sensor in COCO2H2H2O atmospheres and simultaneous determination of partial pressures of CO and CO2 , 1987 .

[12]  Takeshi Kawasato,et al.  A carbon dioxide gas sensor probe based on a lithium ionic conductor , 1990 .

[13]  Christopher W. Bale,et al.  K 2 CO 3 Solid Electrolyte as a CO 2 Probe: Decomposition Measurements of CaCO3 , 1984 .

[14]  Toshio Maruyama,et al.  Potentiometric gas sensor for carbon dioxide using solid electrolytes , 1987 .

[15]  Tatsumi Ishihara,et al.  Application of Mixed Oxide Capacitor to the Selective Carbon Dioxide Sensor I . Measurement of Carbon Dioxide Sensing Characteristics , 1991 .

[16]  Hiroaki Yanagida,et al.  CO2 gas sensor usingβ-Al2O3 and metal carbonate , 1986 .

[17]  Tatsumi Ishihara,et al.  Mixed oxide capacitor of BaTiO3-PbO as a new type CO2 gas sensor. , 1990 .

[18]  Toshio Maruyama,et al.  Recent developments of the sensors for carbon oxides using solid electrolytes , 1988 .

[19]  Y. Sadaoka,et al.  Ionic Conductivity of LiTi2(PO4)3 Mixed with Lithium Salts , 1990 .

[20]  Norio Miura,et al.  Solid Electrolyte CO2 Sensor Using NASICON and Li-based Binary Carbonate Electrode , 1991 .

[21]  Takeshi Kawasato,et al.  Water Vapor Influence on Carbon Dioxide Detection of the Sensor Based on Lithium Conducting Solid Electrolyte. , 1991 .

[22]  Norio Miura,et al.  Solid Electrolyte CO2 Sensor Using Binary Carbonate Electrode , 1990 .