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1、▼JournalofResearch(Science),BahauddinZakariyaUniversity,Multan,Pakistan.Vol.17,No.3,July2006,pp.173-179ISSN1021-1012DEVELOPMENTOFANELECTRODEFORDIRECTMETHANOLFUELCELLA.M.S.RamziaandS.J.IqbalDepartmentofElectricalandElectronicEngineering,FacultyofEngineering,UniversityPutraMalaysia,
2、43400UPMSerdang,Selangor43300,Malaysiaemail:syedjav@yahoo.com,ramzias@yahoo.comAbstractThispaperpresentstheefficientuseofplatinumcatalystrutheniumwithintheanodeofaDirectMethanolFuelCell(DMFC).Thisisachievedbydepositingplatinumandrutheniumnano-particlesonthepre-refluxedmulti-walled
3、carbonnano-tubes(MWCNT).MWCNTsweresynthesizedusingtheChemicalVaporDeposition(CVD)withfloatingcatalysttechnique.Thesynthesizedcarbonnanotubes(CNT)wererefluxedin12MnitricacidtoproduceanchoringsitesonthesurfaceoftheCNT.Theplatinumandrutheniumnano-particleswereinaratioof(3:1).Thesepar
4、ticlesaredepositedonthesurfaceoftheCNTat60wt%byreductioninethyleneglycol.Transmissionmicrograph(TEM)andscanningelectronmicrograph(SEM)imagesshowthesuccessofthedepositionmethod.Keywords:DMFC,floatingcatalystCVD,multi-walledcarbonnano-tubes,platinum-rutheniumnano-particles.INTRODUCT
5、IONAfuelcellislikeanordinarybattery,providesDCelectricityfromtwoelectrochemicalreactions.Thesereactionsoccuratelectrodeswherethereactantsarecontinuouslyfed.Theanodeismaintainedbysupplyingafuel(e.g.methanol)whereasthepositivecathodeismaintainedbythesupplyofoxygenorair.Therearevario
6、ustypesoffuelcells.Typesoffuelcellsvarybythedifferentmaterialsusedtomaketheelectrolyte.Everytypeoffuelcellisspecificonitsownintermsofelectrolyteused,operatingtemperatureandapplication.Directmethanolfuelcell(DMFC),methanolisusedastheelectrolyte.DMFCisalowtemperaturefuelcellhencehas
7、apotentialtobeusedforportableandmobilepurposessimilartodailyusedbatteries.TheprincipleofDMFCistooxidizemethanoltocarbondioxideattheanodeandreduceoxygenandwateratthecathode.Thiselectrochemicalreactionproduces6electrons.Asectionaldiagramisshownbelow:Fig.1showstheoperatingprincipleso
8、fafuelcellutilizingmethanolasfuel
