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Atomically dispersed bimetallic FeNi catalysts as highly efficient bifunctional catalysts for reversible oxygen evolution and oxygen reduction reactions.

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Release time:2022-02-22
Impact Factor:3.975
DOI number:10.1002/celc.201900483
Journal:ChemElectroChem
Abstract:BimetallicatomicallydispersedFeNicatalystsanchoredonN-dopedcarbonnanotubewithcatalystloadingof 2–7wt % withdifferentFe : Ni ratiohavebeendevelopedas highlyactiveandstablebifunctionalcatalystforreversibleoxygenreductionreaction(ORR)andoxygenevolutionreaction(OER)formetalairbatteriesviaa modifiedone-potsynthesismethod.Com-paredwithatomicallydispersedsingleFeandNi catalysts,thebimetallicFeNicatalystsexhibitoutstandingperformanceforreversibleOERandORR,achievinga lowpotentialgap(ΔE)of0.81V to deliveranOERcurrentdensityof 10 mAcm2andanORRcurrentdensityof3 mAcm2. TheFeNielectrodesalsoshowa muchbetterstabilityin thecyclictests,comparedtothatof thestate-of-the-artPt/CandPt/C+Ir/CelectrodesforreversibleOERandORR.Thehighperformanceis likelyduetothesignificantlyenhancedOERactivitycontributedbytheintroductionof Ni atoms,formingbridgedFeNibimetallicdualatomactivesitesforOER.Thisstudyprovidesa newplatformforthedevelopmentof highlyactivebimetallicatomiccatalystsbasedbifunctionalelectrocatalystsformetal-airbatteries.Themodifiedone-potsynthesismethodsdemonstratedin thisstudycanalsobeapplicableto otheratomicallydispersedcatalystsonCNTsor graphenes
Indexed by:Journal paper
Volume:6
Page Number:3478-3487
Translation or Not:no
Date of Publication:2019-06-12
Links to published journals:https://doi.org/10.1002/celc.201900483

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