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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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electrochemicalcharacterizationofni-coandni-co-feforoxidationofmethylalcoholfuelwithhighenergeticcatalyticsurface
, PP. 87-95
Keywords: electrodeposition,ni-coalloy,electrocatalytic,exchangecurrentdensity,impedance,x-raydiffraction(xrd),scanningelectronmicroscope(sem)
Abstract:
？nonptbasedmetalsandalloysaselectrodematerialsformethylalcoholfuelcellshavebeeninvestigatedwithanaimoffindinghighelectrocatalyticsurfacepropertyforthefasterelectrodereactions.electrodeswerefabricatedbyelectrodepositiononpurealfoil,fromanelectrolyteofni,co,fesalts.theoptimumconditionofelectrodepositionwerefoundoutbyaseriesofexperiments,varyingthechemistryoftheelectrolyte,phvalve,temperature,currentandcellpotential.polarizationstudyofthecoatedni-coorni-co-fealloyonpurealwasfoundtoexhibithighexchangecurrentdensity,indicatinganimprovedelectrocatalyticsurfacewithfastercharge-dischargereactionsatanodeandcathodeandlowovervoltage.electrochemicalimpedancestudiesoncoatedanduncoatedsurfaceclearlyshowedthatthepolarizationresistanceandimpedanceweredecreasedbyni-coorni-co-fecoating.x-raydiffraction(xrd),energydispersivex-rayspectroscopy(edx)andatomicabsorptionspectroscopy(aas)studiesconfirmedthepresenceofalloyingelementsandconstituentsofthealloy.themorphologyofthedepositsfromscanningelectronmicroscope(sem)imagesindicatedthattheelectrodesurfacewasathreedimensionalspacewhichincreasedtheeffectivesurfaceareafortheelectrodereactionstotakeplace.
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