PEMFC阴极排水的研究

:(1976-),,,,:;(1955-),,,,,:,;(1972-),,,,,,:;(1980-),,,,:;(1938-),,,,,,::(No150236010),(No1G2000026410),PEMFC1,2,1,1,1,2,1(11,116023;21,100049):(PEMFC),,,,,;,:(PEMFC);;:TM911142:A:1001-1579(2006)04-0249-03StudyonwaterdischarginginthecathodeofPEMFCMAHai2peng1,2,ZHANGHua2min1,HUJun1,CAIYing2hua1,2,YIBao2lian1(11DalianInstituteofChemicalPhysics,ChineseAcademyofSciences,Dalian,Liaoning116023,China;21GraduateSchooloftheChineseAcademyofSciences,Beijing100049,China)Abstract:WaterdischarginginthecathodeofPEMFCwithsinglestraightflowchannelwasstudiedbyvisualizationmethod1Thefirstandaverageliquidstatewaterdischargingtimebetweenadjacentwaterdischargingwasintroducedtoinvestigatetheef2fectsofcurrentdensity,humidifiedtemperatureandgasflowrateonthewaterdischarginginthecathode1Whenthecathodegaswasunsaturated,waterwasdischargedbymeansofvaporandliquidstatewaterdischarging1Vaporstatewaterdischargingwascontinuous,whileliquidstatewaterdischargingwasintermittent1Theaccumulationrateofliquidstatewaterincreasedwiththein2creasingofthecurrentdensityandrelativehumidityandmorewaterwasblownoutasvaporstatewiththeincreasingofgasflowrate1Keywords:protonexchangemembranefuelcell(PEMFC);visualization;waterdischarging(PEMFC)[1-2]5080,,,[3-4][5-6]PEMFC,(DIMAGE2A2),(t1)(tp),1111PEMFCPEMFC,,MEA,1,()(1mm1mm125mm),,Pt/C(015mg/cm2),PTFE(30%),Nafion1035,Toray,MEA(4mm125mm,5cm2)112,H2/O2,36420068BATTERYBIMONTHLYVol136,No14Aug1,2006©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,15min,5s,60;H2/O2011MPa;H260,40%O2,2211110A/cm2,O230,30%O2,,O2,,,;70s,13,GFPMEAF1FP+G>F1,,,,FP+GF1,MEA;90s,23;100s,2;105s,2FP+G>F1,,1,3;120135s,3,,;150s,3,,,,;,,,212O230,O230%,,1,,2a,,,tp=ti-ti-1n,ti:i(s),n:t11232O2O2Fig12Relationshipbetweentherateofvaporandliquidstatewaterdischargingwithcurrentdensity,O2humidifiedtemperatureandO2flowrate1t12tp3t1tpO2O2Fig13Relationshipbetweent1,tpwithcurrentdensity,O2humidifiedtemperatureandO2flowrate052BATTERYBIMONTHLY36©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.,,t1tp3a,,,,,,211,tp,,,,,,t1tp,,,t1tp213O2110A/cm2,O230%O22b2b:,60,,,,,t1tpO23b,,,80,,,,,214110A/cm2,O230O2,2cO2,,,O2316m/s,,3ct1tpO2O21m/s,,O2,O2tpO21m/s,t1tpO2O2,,O2316m/s,,,t1tp3,,,,,,,,,,,,:[1]RENXue2you()1[J]1Bat2teryBimonthly(),2004,34(6):455-4561[2]XINGDan2min(),LIUYong2hao(),YIBao2lian()1[J]1BatteryBimonthly(),2005,35(4):312-3141[3]MenchMM,DongQL,WangCY1Insituwaterdistributionmea2surementsinapolymerelectrolytefuelcell[J]1JPowerSources,2003,124(1):90-981[4]SatijaR,JacobsonDL,ArifM,etal1InsituneutronimagingtechniqueforevaluationofwatermanagementsystemsinoperatingPEMfuelcells[J]1JPowerSources,2004,129(2):238-2451[5]KlausT,DavidP,ChristopherH1VisualizationofwaterbuildupinthecathodeofatransparentPEMfuelcell[J]1JPowerSources,2003,124(2):403-4141[6]YangXG,ZhangFY,LubawyAL,etal1VisualizationofliquidwatertransportinaPEMFC[J]1ElectrochemicalandSolid2StateLet2ters,2004,7(11):A408-A4111:2005-12-27::,30,,,,200410,,,,200520,,,2004,5500,,8000,,,,20061-7101524,:PEMFC©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.