光电化学测试在光催化中的应用_精品文档.pptx

光电化学测试在光催化中的应用_精品文档.pptx

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光/电化学测试在光催化中的应用Photo/electrochemistryinPhotocatalysis,范科2016-09-09,AllenJ.Bard,九阴真经,以阅读大量专业相关文献为主以目的性阅读专著为辅,干货,电化学阻抗谱（ElectrochemicalImpedanceSpectrum,EIS）光电化学电池测试（PhotoelectrochemicalCell,PEC）电催化表征（Electrocatalysis）,电化学阻抗谱（ElectrochemicalImpedanceSpectrum,EIS）,I=,欧姆定律,我是华丽的分割线,EIS向量,a,b,c=a+bj,c2=a2+b2,c,Z,Z,Z,Z=Z+Zj,Z2=Z2+Z2,如何读图（界面！

界面！

界面！

重要的事情说三遍！

）,0.7,62,NatureCommunications2016,7,11981,坐标轴起点从（0,0）开始横坐标与纵坐标尺度保持一致严禁用软件模拟替代试验测试结果,WHY?

如何画图,严重差评,theNyquistplotsexhibitadepressedsemi-circleatthehighfrequencyrange,followedbyalinearslopeinthelowfrequencyregion,whichiscalledWarburgresistanceresultingfromthefrequencydependenceofionsdiffusion/transportintheelectrolyte.Theequivalentseriesresistance（ESR）oftheelectrodecanbeobtainedfromthexinterceptoftheNyquistplot.TheESRofNiMoO4andCoMoO4electrodeare3.48and3.59,respectively.Thediameterofsemi-circlecorrespondstothechargetransferresistancecausedbyFaradicreactionsinparallelwiththedouble-layercapacitanceattheelectrodeelectrolyteinterface.Accordingtotheenlargedplots,thesizeofthesemicircle,whichequalsthechargetransferresistanceRct,issmallerfortheNiMoO4electrode（0.8）comparedtothatoftheCoMoO4electrode（1.2）,indicatingthatthebinder-freeelectrodedesigncouldgreatlyimprovetheconductivity,thusleadingtoenhancedelectrochemicalproperties.（Nanoscale,2016,8,13273-13279）,光电化学电池测试PhotoelectrochemicalCell,PEC,三电极体系,（此处非硬广，请自觉无视水印）,J.Am.Chem.Soc.,2014,136（7）,pp28432850,J.Am.Chem.Soc.,2010,132（21）,pp74367444,Chem.Sci.,2011,2,737-743,Fe2O3,DatafromMichaelGratzelsgroup,notpublished,J.Phys.Chem.C2012,116,2670726720,Chargetransferrate=Jss/Jinst,Adv.Funct.Mater.2016,26,44354443,扣除暗电流不能使用牺牲试剂,J.Am.Chem.Soc.,2014,136（7）,pp28432850,电催化测试（光催化助催化剂的性能表征）Electrocatalysis（co-catalystsforphotocatalysis）,Wearefamily,C3N4TiO2ZnOWO3BiVO4CdSTaxOyN,PtPdNixSNixFeySMoS2CuxPCoxP,主,助,=,助催化剂的电化学性能表征,怒刷存在感,OverpotentialOnsetpotential,TafelSlope,=a+blogj,120mV/decVolmerreaction,40mV/decHeyrovskyreaction,30mV/decTafelreaction,NatureCommunications2016,7,11981,Electrochemicalactivesurfacearea（ECSA）,一个有意思的问题。

Rs,怎么又是我？

鲁金毛细管,欧姆电势降iR-drop,欧姆电势降的矫正iR-correction,Uapp=U-iRs,再举个栗子,J.Am.Chem.Soc.,2014,136（7）,pp28432850,Uapp=U-iRs,如何确定Rs？

再次见面请多关照,Uapp=U-iRs,Imhere,小结,阻抗谱,光电测试,电催化测试,一些文献，墙裂推荐（按本人心情排序，排名不分先后）,Huynh,M.,Shi,C.,Billinge,S.J.L.&Nocera,D.G.NatureofActivatedManganeseOxideforOxygenEvolution.J.Am.Chem.Soc.137,14887-14904,doi:

10.1021/jacs.5b06382（2015）.,McCrory,C.C.L.,Jung,S.,Peters,J.C.&Jaramillo,T.F.BenchmarkingHeterogeneousElectrocatalystsfortheOxygenEvolutionReaction.J.Am.Chem.Soc.135,16977-16987,doi:

10.1021/ja407115p（2013）.,LeFormal,F.,Sivula,K.&Grtzel,M.TheTransientPhotocurrentandPhotovoltageBehaviorofaHematitePhotoanodeunderWorkingConditionsandtheInfluenceofSurfaceTreatments.TheJournalofPhysicalChemistryC116,26707-26720,doi:

10.1021/jp308591k（2012）.,McCrory,C.C.L.etal.BenchmarkingHydrogenEvolvingReactionandOxygenEvolvingReactionElectrocatalystsforSolarWaterSplittingDevices.J.Am.Chem.Soc.137,4347-4357,doi:

10.1021/ja510442p（2015）.,Lopes,T.,Andrade,L.,Ribeiro,H.A.&Mendes,A.Characterizationofphotoelectrochemicalcellsforwatersplittingbyelectrochemicalimpedancespectroscopy.Int.J.HydrogenEnerg.35,11601-11608,doi:

http:

/dx.doi.org/10.1016/j.ijhydene.2010.04.001（2010）.,Chen,Z.etal.Acceleratingmaterialsdevelopmentforphotoelectrochemicalhydrogenproduction:

Standardsformethods,definitions,andreportingprotocols.J.Mater.Res.25,doi:

http:

/dx.doi.org/10.1557/JMR.2010.0020（2010）.,祝大家研究生活爽，多出好成果,