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Decoration of Micro-/Nanoscale Noble Metal Particles on 3D Porous Nickel Using Electrodeposition Technique as Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Electrolyte

Title
Decoration of Micro-/Nanoscale Noble Metal Particles on 3D Porous Nickel Using Electrodeposition Technique as Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Electrolyte
Authors
Qian, X[Qian, Xin]Hang, T[Hang, Tao]Shanmugam, S[Shanmugam, Sangaraju]Li, M[Li, Ming]
DGIST Authors
Shanmugam, S[Shanmugam, Sangaraju]
Issue Date
2015-07-29
Citation
ACS Applied Materials and Interfaces, 7(29), 15716-15725
Type
Article
Article Type
Article
Keywords
3D Porous Nickel ElectrodeCatalyst ActivityCorrosionCyclic VoltammetryElectro-Chemical ElectrodesElectro-Chemical Impedance Spectroscopy (EIS)ElectrocatalystElectrocatalystsElectrocatalytic ActivityElectrochemical MeasurementsElectrodeposited Noble Metal ParticlesElectrodepositionElectrodeposition TechniqueElectrodesElectrolytesExchange Current DensitiesField Emission CathodesField Emission MicroscopesField Emission Scanning Electron MicroscopyHydrogen Evolution ReactionHydrogen Evolution ReactionsHydrogen ProductionMetalsNanotechnologyNickelNoble-Metal ParticlesParticle Size AnalysisPlatinumPlatinum MetalsPorous Nickel ElectrodePrecious MetalsReinforcementScanning Electron MicroscopySilverSpectroscopy
ISSN
1944-8244
Abstract
Micro-/nanoscale noble metal (Ag, Au, and Pt) particle-decorated 3D porous nickel electrodes for hydrogen evolution reaction (HER) in alkaline electrolyte are fabricated via galvanostatic electrodeposition technique. The developed electrodes are characterized by field emission scanning electron microscopy and electrochemical measurements including Tafel polarization curves, cyclic voltammetry, and electrochemical impedance spectroscopy. It is clearly shown that the enlarged real surface area caused by 3D highly porous dendritic structure has greatly reinforced the electrocatalytic activity toward HER. Comparative analysis of electrodeposited Ag, Au, and Pt particle-decorated porous nickel electrodes for HER indicates that both intrinsic property and size of the noble metal particles can lead to distinct catalytic activities. Both nanoscale Au and Pt particles have further reinforcement effect toward HER, whereas microscale Ag particles exhibit the reverse effect. As an effective 3D hydrogen evolution cathode, the nanoscale Pt-particle-decorated 3D porous nickel electrode demonstrates the highest catalytic activity with an extremely low overpotential of -0.045 V for hydrogen production, a considerable exchange current density of 9.47 mA cm-2 at 25 °C, and high durability in long-term electrolysis, all of which are attributed to the intrinsic catalytic property and the extremely small size of Pt particles. (Graph Presented). © 2015 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/2874
DOI
10.1021/acsami.5b00679
Publisher
American Chemical Society
Related Researcher
Files:
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Collection:
Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


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