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    • Graphene‐Encapsulated Co9S8 Nanoparticles on N,S‐Codoped Carbon Nanotubes: An Efficient Bifunctional Oxygen Electrocatalyst

    N，S共掺杂碳纳米管上石墨烯包封的Co9S8纳米粒子：一种高效的双功能氧电催化剂

    0 约11页 pdf
    出版日期： 2019
    标签： carbon electrochemistry nanoparticles nanotubes zinc air battery

    出版日期:2019

    作者单位:NanJia,KeyLaboratoryofAppliedSurfaceandColloidChemistry(MinistryofEducation)ShaanxiKeyLaboratoryforAdvancedEnergyDevicesShaanxiEngineeringLabforAdvancedEnergyTechnologySchoolofMaterialsScienceandEngineeringShaanxiNormalUniversityXi'an710119P.R.China,JingLiu,KeyLaboratoryofAppliedSurfaceandColloidChemistry(MinistryofEducation)ShaanxiKeyLaboratoryforAdvancedEnergyDevicesShaanxiEngineeringLabforAdvancedEnergyTechnologySchoolofMaterialsScienceandEngineeringShaanxiNormalUniversityXi'an710119P.R.China,YunshanGao,KeyLaboratoryofAppliedSurfaceandColloidChemistry(MinistryofEducation)ShaanxiKeyLaboratoryforAdvancedEnergyDevicesShaanxiEngineeringLabforAdvancedEnergyTechnologySchoolofMaterialsScienceandEngineeringShaanxiNormalUniversityXi'an710119P.R.China,PeiChen,KeyLaboratoryofAppliedSurfaceandColloidChemistry(MinistryofEducation)ShaanxiKeyLaboratoryforAdvancedEnergyDevicesShaanxiEngineeringLabforAdvancedEnergyTechnologySchoolofMaterialsScienceandEngineeringShaanxiNormalUniversityXi'an710119P.R.China,XinbingChen,KeyLaboratoryofAppliedSurfaceandColloidChemistry(MinistryofEducation)ShaanxiKeyLaboratoryforAdvancedEnergyDevicesShaanxiEngineeringLabforAdvancedEnergyTechnologySchoolofMaterialsScienceandEngineeringShaanxiNormalUniversityXi'an710119P.R.China,ZhongweiAn,KeyLaboratoryofApp
    杂志名称:ChemSusChem
    卷号:12
    期数:14
    刊号:1864-5631
    出版日期:2019

    简介:Aninexpensiveandefficientbifunctionalelectrocatalystfortheoxygenreductionreaction(ORR)andtheoxygenevolutionreaction(OER)iscentraltotherechargeablezinc–airbattery.Herein,ananohybrid,inwhichN,S‐codopedcarbonnanotubesweredecoratedwithCo9S8nanoparticlesencapsulatedinporousgraphenelayers,wasfabricatedbyaone‐stepheat‐treatmentprocess.TheN,SdopantspecieswerethemajoractivesitesfortheORR,andCo9S8nanoparticlesweremainlyresponsiblefortheOER.Comparedwithcommercial20?wt?%Pt/CandIr/Celectrocatalysts,thisnanohybridexhibitedacomparableORRhalf‐wavepotential(0.831?Vvs.reversiblehydrogenelectrode)andOERpotential(1.591?Vat10?mA?cm?2),betterlong‐termstabilityinanalkalinemedium,andanarrowerpotentialgap(0.76?V)betweenORRandOER.Furthermore,asairelectrodeoftherechargeablezinc–airbattery,itdeliveredalowcharge–dischargevoltagegap(0.65?Vat5?mA?cm?2),highopen‐circuitpotential(1.539?V),goodspecificcapacity(805?mA?h?gat5?mA?cm?2),andexcellentcyclingstability(48?h),superiortothoseofcommercialPt/CandIr/Ccatalysts,andthusshowedpromiseforapplicationsinrenewableenergyconversiondevices.

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