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《Detection of carbon monoxidenext term by using zirconia oxygen previous termsensor》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、SOLIDSTATEIONICSEUEVIERSolidStateIonics79(1995)344-348DetectionofcarbonmonoxidebyusingzirconiaoxygensensorZhangYiCana,HidekazuNaritaa,JunichiroMizusakib,HiroakiTagawaaAkebonoBrakeResearchandDeuelopmentCenter,Ltd.,Saitama348,Japan’ResearchInstituteforScientificMeas
2、urements,TohokuUniversity,Sendai980-77,Japan’InstituteofEnvironmentalScienceandTechnology,YokohamaNationalUniuersiry,Yokohama240,JapanAbstractAnoxygenconcentrationcellofthetypeO&),CO,Pt/stabilizedzirconia,YSZ,/Pt,O,(2)wasfoundtobesensitivetoasmallamountofCOinanO,-
3、containinggasstream.Electrochemicalmeasurementswerecarriedoutforthesteady-statepolarizationcurvesinthetemperaturerangeof500-650°C.WhenCOcoexistedinastream,variationinpolarizationcurrentwasobservedintheregionwithin5*SOmVoftheequilibriumpotentialbelow550°C.Inparticu
4、lar,thesensorshowedgoodCOsensingcharacteristicsintheconcentrationrangeof32-800ppmofCOinair.TheCOsensingmechanismofthecellwasalsodiscussed.Keywords:Carbonmonoxide;Zirconiaoxygensensor;Polarizationcurrent;Sensingmechanism1.Introductionpriatevalues[3,4].Thesestudiesw
5、erefocusedonthegasdiffusionintheceramiccoatingorthecatalyticAzirconiasensorofthetypeofoxygenconcen-reactionofnonequilibriumgasonthePtelectrodetrationcell:surfaceoronthecatalystintheceramiccoating.O,(l),WYSVPLO,(2)(1)Inthepreviousstudiesofourgroup,itwasshownhasbeen
6、usedasanoxygenmeter:thesensingthattherateofelectrodereactionattheporousdeviceforthecontrolofair-fuelratiosofvehiclePt/YSZelectrodeinthesameoxygenpartialpres-enginesandcombustionfurnaces,thecontroldevicesuredifferswhenthecomponentsinthegasmixturesoftheoxygenconcent
7、rationinagasstream,andasaredifferent,i.e.O,-Ar,CO-CO,orH,-H,O.Itothers.wasthenpointedoutthatthemechanismofelectrodeOntheotherhand,ithasbeenreportedinvariousreactionwasdifferentfordifferentgaseouscompo-worksthatthezirconiasensorscandetectasmallnents[5-71.Thisinfers
8、thatthemaincomponentofamountofCOinairbymeansofanomalousEMF,samplegascanbeidentifiedbyusingzirconiaoxy-whichisunusuallylargerthanthatcalculatedfromgensen
