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Graphene supported Pt-Ni nanoparticles for oxygen reduction reaction in acidic electrolyte

Graphene supported Pt-Ni nanoparticles for oxygen reduction reaction in acidic electrolyte
Suh, Won-kyoGanesan, PandianSon, ByungrakKim, HasuckShanmugam, Sangaraju
DGIST Authors
Son, ByungrakShanmugam, Sangaraju
Issue Date
International Journal of Hydrogen Energy, 41(30), 12983-12994
Article Type
CarbonCatalyst ActivityCatalystsCyclic VoltammetryElectrocatalysisElectrocatalystsElectrocatalytic Activity and StabilityElectrocatalytic Oxygen ReductionElectrodesElectrolytesElectrolytic ReductionElectron MicroscopyFuel CellsGrapheneGraphene OxideGraphene OxidesHigh Resolution Transmission Electron MicroscopyLinear Sweep VoltammetryMorphologyNanoparticlesNickelOxygenOxygen Reduction ReactionPhysicochemical TechniquesPlatinumPlatinum AlloysPolyelectrolytesPolymer Electrolyte Fuel CellsProton-Exchange Membrane Fuel Cells (PEMFC)Pt-NiRotating DisksRotating Ring-Disk Electrode TechniquesScanning Electron MicroscopySolid ElectrolytesTransmission Electron MicroscopyX Ray DiffractionX Ray Photoelectron SpectroscopyYarn
The design of high performance oxygen reduction reaction (ORR) electrocatalysts play an important role in the commercialization of polymer electrolyte membrane fuel cells. The morphology, structure, and composition of the support material significantly affect the catalytic activity of the fuel cell catalyst. In this work, we report a systematic and comparative study of the effects of the support morphology for Pt–Ni nanoparticles for the ORR. The effect of the support morphology on the electrocatalytic oxygen reduction reaction was investigated. Pt–Ni alloy catalysts were characterized using various physico-chemical techniques, such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Pt–Ni alloy nanoparticles were deposited uniformly on a graphene support and their oxygen reduction activities were evaluated in an acid electrolyte. The ORR activity of Pt–Ni supported on graphene was also compared with Pt–Ni supported on Vulcan carbon XC-72 and carbon nanotubes. The electrocatalytic activity and stability of Pt–Ni alloy catalysts were studied using cyclic voltammetry, linear sweep voltammetry, rotating disk electrode, and rotating ring disk electrode techniques. The results demonstrate that the graphene supported Pt–Ni catalyst showed the highest ORR activity among the three evaluated catalysts. © 2016 Hydrogen Energy Publications LLC
Elsevier Ltd
Related Researcher
  • Author Shanmugam, Sangaraju Advanced Energy Materials Laboratory
  • Research Interests Electrocatalysts for fuel cells; water splitting; metal-air batteries; Polymer electrolyte membranes for fuel cells; flow batteries; Hydrogen generation and utilization
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