全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电化学  2003 

MnO_2电极上氧还原的电催化机理

, PP. 336-343

Keywords: 氧还原,电催化,二氧化锰,反应机理

Full-Text   Cite this paper   Add to My Lib

Abstract:

研究了MnO2催化氧还原的电催化性质,通过比较MnO2的自还原和催化氧还原的相关性,结合极化曲线分析和中间产物检测,提出了氧在MnO2上电催化机理.根据这一机理,MnO2首先还原为MnOOH,随之氧的还原通过化学氧化MnOOH,两者协同进行.依此导出的极化曲线形式能够较好地解决实验中观测到的动力学特征

References

[1]   BlurtonKF .Thelow_temperaturepolarzationofplatinum_catalyzedaircathodesinalkalineelectrolyte[J].J .Electrochem.Soc.,1972,119:1605~1609.
[2]   ChatterjeeN ,BasumallickIN .Anewmethodforfabricatingflexiblepolymerelectrodesanditsapplicationtotheoxygen_reductionreaction[J].J.PowerSources,1996,63:271~273.
[3]   ZagalJ ,BindraP ,YeagerE .AmechanisticstudyofO2 reductiononwatersolublephthalocyninesadsorbedongraphiteelectrodes[J].J .Electrochem.Soc.,1980,127:1506~1517.
[4]   HermannV ,DurtriatD ,MullerS ,etal.MechanisticstudiesofoxgyenreductionatLa0.6Ca0.4CoO3_activatedcarbonelectrodesinachannelflowcell[J].Electrochem.Acta,2000,46:365~372.
[5]   KlapsteB ,VondrakJ ,VelickaJ .MnOx/CcompositesaselectrodematerialsⅡ.reductionofoxygenonbifunc tionalcatalystsbasedonmanganeseoxides[J].Electrochem.Acta,2002,47:2365~2369.
[6]   MaoL ,SotomuraT ,NakatsuK ,etal.Electrochemicalcharacterizationofcatalyticactivitiesofmanganeseoxidestooxygenreductioninalkalineaqueoussolution[J].J .Electrochem.Soc.,2002,149:A504~A507.
[7]   RaoKV ,VenkatesanVK ,UdupaHVK .Electrolyticmanganesedioxideasanaxygenelectrode[J].J .Elec trochem.Soc.India,1982,31_2;33~39.
[8]   KazawaA ,PowersRA .Cathodicpolarizationofthemanganesedioxideelectrodeinalkalineelectrolytes[J].J .Electrochem.Soc.,1968,123:122~126.
[9]   KozawaA ,YeagerJF .Thecathodicreductionmechanismofelectrolyticmanganesedioxideinalkalineelec ticlyte[J].J .Electrochem.Soc.,1965,112:959~963.
[10]   KozawaA ,PowersRA .Themanaganesedioxideelectrodeinalkalineelectrolyte:Theelectro_protonmecha nismforthedischargeprocessfromMnO2 toMnO1.5[J].J .Electrochem.Soc.,1966,113:870~878.
[11]   DaviesMD ,ClarkM ,YeagerE ,etal.TheoxygenelectrodeI .isotopicinvestigationofelectrodemechanisms[J].J .Electrochem.Soc.,1959,106:56~61.
[12]   YeagerE .ElectrocatalystsforO2 reduction[J].Electrochem.Acta,1984,29:1527~1537.
[13]   MorcosI,YeagerE .Kinticstudiesoftheoxygen_peroxidecoupleonpyrolyticgraphite[J].Electrochim.Acta,1970,15:953~975.
[14]   KanungoSB ,ParidaKM ,SantBR .StudiesonMnO2_Ⅲ.ThekineticsandthemechanismforthecatalyticdecompositionofH2O2 overdifferentcrystallinemodificationsofMnO2[J].Electrochim.Acta,1981,26:1157~1167.
[15]   LlompartS ,YuLT .Oxygen_regenerationofdischargedmanganesedioxideI.Generalphenomenaabservedonthickpowderelectrodes[J].J .Electrochem.Soc.1990,137:371~377.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133