乙二醇在铂与其合金电极上的电氧化行为分析

《乙二醇在铂与其合金电极上的电氧化行为分析》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、AbstractDueitsmanyvirtue，FuelCellhavebeenattractedmoreandmoreattention．AndtheDirectAlcoholFuelCell(DAFC)，usingtheliquidasitsfuel，havemuchattractivedevelopmentfuturebecauseofitssafety,easyfordepositandtransportation，cheap，noneedofthereformingofhydrogen．NowadaystheexpensivemetalPlatinumandPlatinum

2、basedcatalystareusedandarethoughtofthemosteffectedcatalystinfuelcellofDAFC．ButasitisknownthatPlatinumhaveafataldisadvantagethatitcanadsorbCOverystronglyresultinginthetoxinofcatalyst．SoitisstillachallengingsubjecttodevelopnewmakingmethodthatCanenhancetheefficiencyofPlatinum、lowertheusageofPlatinu

3、m、enhancethetoxinresistingofPlatinumbasedcatalyst．Alotofprogresseshavebeenmadeinthataspectofstudyandapplication．Peoplehavedevelopedavarietyofmethodtodothatsuchasaddingthesecondmetal(Ru，Sn，Moetc．)CallincreaseapparentlythecatalyticactivityofplatinumandtoxinresistingofCO；developingnewfibficatingmet

4、hodtoincreasethedispersingandstabilityofPlatinumandtocontrolthesizeandcrystalcategoryofthenano—particleofPlatinumtomakeithavethebestcatalyticactivity；developingthecatalystthatnotbasedonPlatinumetc。．Indual·—metalcatalystPt-·Ruisthoughtofthebestcatalystofsmallalcoholmolecule．Presentlythedual—funct

5、ionmechanismandelectroniceffectarewidelyacceptedasthecatalyticmechanism．Butduetothecomplexityofdual—metalcatalystinthoseaspectsuchaselementratio，crystalcategory,elementdistributionandsizeofnano-particleetc．，thenano—particlethatthecomposingandstructurecanbecontrollablemustbemadetounderstandcompre

6、hensivelyandthoroughlythecatalyticmechanism，tostudytherelationshipofstructure，performanceandactivity,andintheendtoprovidetheoreticalguidanceinpracticalcatalyticdesign．BeingakindofsmallalcoholmoleculeEthyleneGlycolisalsoanidealfuelinDAFC．Butnowadaysthestudyismostbeenfocusedonmethanol，Ethanoletc．．

7、SoitisveryIIInecessarytocarryoutthestudyofEGelectro-OxidationonPlatinumbasedCatalyst．Sobasedonthediscussionabovethestudyisfollowedby：(1)MakingPt／Ptelectrodeofdifferentroughnessdegreebyelectro—depositandroughingmethodandstudy