全钒液流电池性能及其电极材料的研究

12320068ELECTROCHEMISTRYVol.12No.3Aug.2006:100623471(2006)03202712004:2005211217,:20052122213,Tel:[phone],Email:[e-mail]863(2003AA517020)31,2,3,3,3(1.,200240;2.,200240;3.,200240):PAN,.,,,,.20mA/cm2,15mA/cm2.,,.:;;:TM912.9:A,,20,.,::VO2++H2OVO2++2H++eE=1.00V(1):V3++eV2+E=-0.26V(2)1.26V.,[1].,,,;,();(),.,.[4],;,.11.1:VOSO4,,Na2SO4.VOSO4,.:,(),PAN,Nafion(117),,.:BT2100B,HD2200060V25A,,,,PGSTAT30.1.2,,905%H2O25h,,40030h,.Nafion,.Nafion(117).,VOSO4nH2SO4=2molL-1n2molL-11L[6],1%1%Na2SO4(bymass)[3].1.3PGSTAT30(CV).,,1cm2,,(SCE),V(IV)(2molL-1VOSO4+2molL-1H2SO4).1[5].100mLV();,V()V(),V()100mL,;,.1Fig.1SchematicdiagramoftheflowingVanadiumtattery22.11)2(1)(2)2molL-1VOSO4+2molL-1H2SO4CV,0.01V/s.,-1.02.0V,VO2+/VO2+(c)(d),V2+/V3+(a),(b).VO2+/VO2+Ep0.59V,V2+/V3+Ep0.5V.,.2(1)(2)Fig.2Cyclicvoltammogramofthetreated(1)anduntreated(2)graphiteelectrode2,V2+/V3+(A,B)VO2+/VO2+(C,D),.V2+/V3+VO2+/VO2+Ep0.18V0.4V,,.,.,,.2)3(1)(2)2molL-1VOSO4+2molL-1H2SO4CV,0.01V/s.,.,VO2+/VO2+,,V2+/V3+,.27220063(1)(2)Fig.3Cyclicvoltammogramofthetreated(1)andun2treated(2)softgraphiteelectrode4(1)(2)Fig.4Cyclicvoltammogramofthetreated(1)andun2treated(2)carbonclothelectrode5(a)(b)Fig.5Surfacemorphologyofthetreatedgraphite(a)andtheuntreatedgraphite(b)electrode3)4(1)(2)PAN2molL-1VOSO4+2molL-1H2SO4CV,0.01V/s.,,V2+/V3+,VO2+/VO2+Ep0.8V,,,Na2fion,,.2.25(a)(b)5000.,,,,.,,6(1)(2)Fig.6Charge/dischargevoltagecurvesofthevanadiumcellwithtreated(1)anduntreated(2)graphiteelectrodechargecurrent:20mA/cm2,dischargecurrent:1)10mA/cm2,2)5mA/cm2.,3723:,,[2].2.36(1)(2),20mA/cm2.,110mA/cm2,25mA/cm2,,,.3,.,,.(References):[1]LiHua(),ChangShou2wen(),YanChuan2wei().Reviewofresearchontheelectrodema2terialsforallvanadium2redox2flowbattery[J].Electro2chemistry,2002,8(3):257262.[2]GuJun(),LiGuang2qing(),SuiZhi2tong().Progressofresearchonvanadium2redoxflowbattery(PartDevelopmentofbatterymaterials)[J].JournalofPowerSources,2000,24(3):181184.[3]LuoDong2mei(),XuQian(),SuiZhi2tong().Effectofadditivesonthepropertiesofelec2trolyteforvanadiumredoxbattery[J].JournalofPowerSources,2004,28(2):9496.[4]RychcikM,SkyllasKazacosM.Evaluationofelectrodematerialsforvanadiumredoxcell[J].J.PowerSources,1987,19:4554.[5]SkyllasKazacoM,KashermanD,HongDR,etal.Char2acteristicsandperformanceof1KWUNSWvanadiumredoxbattery[J].J.PowerSources,1991,35:399404.[6]RahmanF,SkyllasKazacoM.Solubilityofvanadylsul2fateinconcentratedsulfuricacidsolutions[J].J.Pow2erSources,1998,72:105110.StudiesonPerformanceandElectrodeMaterialsforAllVanadiumFlowBatteryYUANJun31,YUQing2chun2,LIUYi2feng3,MALiang2liang3,WUYi2hua3(1.DepartmentofEnvironmentalScienceandEngineering,ShanghaiJiaotongUniversity,Shanghai200240,China,2.GraduateSchooloffuelcell,ShanghaiJiaotongUniversity,Shanghai200240,China,3.DepartmentofChemistryandChemicalEngineering,ShanghaiJiaotongUniversity,Shanghai200240,China)Abstract:Inthispaper,cyclicvoltammetryhasbeenusedtostudytheelectrochemicalperformanceofthetreatedanduntreatedgraphite,softgraphiteandPAN2carbonclothinvanadiumsulfatesolution.Theresultsshowthat:thereversibilityofreactioncanbeimprovedonthesurfaceoftreatedelectrode,andthecurrentcanalsoincrease;theelectrochemicalperformanceoftreatedelectrodeisremarkablyenhanced;intheprocessofcharge/discharge,thechargecurrentcanreachupto20mA/cm2,anddischargecurrentupto15mA/cm2;sur2facemorphologyofthetreatedanduntreatedgraphiteshowthatthetreatmentcanchangethesurfacestructureofelectrodeandalsoaddthereactionarea.Keywords:Vanadiumbattery,Electrode,Cyclicvoltammetry4722006