集流板自增濕燃料電池技術(shù)研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文集流板自增濕燃料電池技術(shù)研究姓名：謝強(qiáng)偉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：羅志平20100401武漢理工大學(xué)碩士學(xué)位論文AbstractPerfluorinatedsulfonicacidmembranelScommonlyusedassolidelectrolytemembraneforprotonexchangemembranefuelcellatpresentThewatercontentinthem

2、embranedirectlyaffectstheprotonconductionandmembranemechanicalstrengthandfurtheraffectsthefuelcellSperformanceSoitisveryimportanttomaintainanappropriatemembranewettingUsuallyavarietyofhumidificationmeathodsareusedforhumi

3、difyingthereactiongas，butthiswillincreasethecomplexityofthesystemandthevolumeandweightInordertosimplifythesystemandimprovethevolumeandmassratiopowertherehavebeenmanyselfhumidificationmethodsbydesigningandoptimizingthemat

4、erialsandstructuresoffuelcellinrecentyearsButresultsalenotverygoodandnotyetcompletelypracticalInthispaperfromtheperspectiveofmakingselfhumidificationfuelcellpracticalandsimplifyingthewatermanagementsystemofthefuelcell，th

5、eauthorstartsfromthefuelcellSkeymaterialcurrentcollectingplatematerial，usingporouscarbonplatetoreplacethetraditionalnonporousgraphiteplateasthematerialofcurrentcollectingplateWithexperimentalstudyonthewaterpermeabilityan

6、dthendesigningstructurelayoutandflowfieldofporouscarbonplate，reactiongasisdesignedtobehumifiedintheareaoffuelcellinletwherewaterispermeatedfromcoolingwatertocathodeflowfieldwhilewaterisrecoveredintheareaoffuelcell’outlet

7、wherewaterispermeatedfromcathodeflowfieldtocoolingwaterAsaresult，humidificationsystemoffuelcelliseliminatedandthewaterandheatmanagementiscombinedThemainconclusionsareasfollows：(1)Thewaterpermeabilityofporouscarbonplateis

8、mainlyaffectedbytemperatureandpressuregradientandincreaseslinearlywithtemperatureandpressuregradientincreases(2)Byappropriatedesignofthestructureandflowfieldofthecurrentcollectingplateandoptimizationofoperatingconditions