urea浸渍法制备的高性能稳定微观结构cu-ceo2铜基固体氧化物燃料电池

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1、ElectrochimicaActa56(2011)2230–2236ContentslistsavailableatScienceDirectElectrochimicaActajournalhomepage:www.elsevier.com/locate/electactaEffectofaddingureaonperformanceofCu/CeO2/yttria-stabilizedzirconiaanodesforsolidoxidefuelcellspreparedbyimpregnationmethodWenyuanLi,ZheLü∗,XingbaoZhu,BoGuan,

2、BoWei,ChengzhiGuan,WenhuiSuCenterforCondensedMatterScienceandTechnology,DepartmentofPhysics,HarbinInstituteofTechnology,Harbin150080,PRChinaarticleinfoabstractArticlehistory:Anodemicrostructurehasagreatinfluenceonthecellperformance.Theadditionofureaintoimpreg-Received16September2010natedsolutionh

3、asbeenproposedtotailorthedistributionand/ormorphologyofCuwhenfabricatingtheReceivedinrevisedformCu-basedanodesbyimpregnationmethod.Whilethepreviousreportsdemonstratedthesinglecellper-15November2010formancehasnotbeenimprovedinthisroute,inthispaper,fuelcellswithCu/yttria-stabilizedzirconiaAccepted

4、20November2010(YSZ)andCu–CeO2/YSZanodeswerefabricatedandevaluatedwithimprovedoutputs.Themicrostruc-Availableonline28November2010tureofCuinanodesappearedsignificantlydifferentaftertheadditionofurea.Theelectronicconductivityobtainedfromtheanodesimpregnatedwithaddingureawastwiceashighastheoneswithou

5、t.Perfor-Keywords:manceoffuelcellsincreasesby12%whileoperatingonHat700◦Cuponaddingurea.Furthermore,Impregnationmethod2Cu-basedanodetheperformanceimprovementwasmoreprominentwhensuchmethodwasadoptedinthefabricationofCu–CeO/YSZcompositeanodes.CellswithCu–CeO/YSZcompositeanodesoperatinginHat700◦COpt

6、imizationofmicrostructure222Ureaexhibitedanincreaseofcellperformanceby37%,from337to462mWcm−2,bysimplyaddingureatotheimpregnatedsolution.Andtheperformanceenhancementforsuchfuelcellsisalsoashighas28%whenusingCH4asfuel.©2010ElsevierLtd.Allrightsreserved.1.Introductionthemorphologyand/ordistribution

7、ofCudepositsbythereactionsbetweenureaandCu(NO3)2uponheatingtheimpregnatedanodesInthepresenttime,muchefforthasbeendevotedindevel-to∼80◦Cduringthedryingprocedure.opingsolidoxidefuelcells(SOFCs)directlyusinghydrocarbons,InRef.[