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Enhanced Oxygen Reduction Activities of Pt Supported on Nitrogen-Doped Carbon Nanocapsules

Title
Enhanced Oxygen Reduction Activities of Pt Supported on Nitrogen-Doped Carbon Nanocapsules
Authors
Shanmugam, S[Shanmugam, Sangaraju]Sanetuntikul, J[Sanetuntikul, Jakkid]Momma, T[Momma, Toshiyuki]Osaka, T[Osaka, Tetsuya]
DGIST Authors
Shanmugam, S[Shanmugam, Sangaraju]; Sanetuntikul, J[Sanetuntikul, Jakkid]
Issue Date
2014-08-10
Citation
Electrochimica Acta, 137, 41-48
Type
Article
Article Type
Article
Keywords
Acid ElectrolytesCarbonCommercial CatalystDoping (Additives)ElectrocatalystElectrocatalystsElectrolytic ReductionFuel CellsHigh Resolution Transmission Electron MicroscopyMetal NanoparticlesNanocapsulesNitrogen-Doped CarbonNitrogen-Doped CarbonsOxygen ReductionOxygen Reduction ReactionParticles SizesPhysicochemical TechniquesPlatinumPt NanoparticlesScanning Electron MicroscopyX Ray DiffractionX Ray Photoelectron Spectroscopy
ISSN
0013-4686
Abstract
The nitrogen-doped carbon nanocapsules (NCNCs) were explored as catalyst support for oxygen reduction reaction (ORR) in acid electrolyte. The deposition of Pt particles on NCNCs support was characterized using various physico-chemical techniques, such as scanning electron microscope, transmission electron microscope, X-ray diffraction, and X-ray photoelectron spectroscopy. The high resolution transmission electron microscopy reveals that Pt particles are uniformly dispersed onto the NCNCs and particles size of about 2.2 nm was observed. The electrochemical ORR activities of the Pt supported on NCNCs catalysts were studied and compared with a commercial catalyst. Pt/NCNC showed enhanced ORR activity and better stability than a commercial Pt/C catalyst. The enhanced performance of Pt supported NCNCs can be attributed to the better dispersion and utilization of Pt nanoparticles. © 2014 Elsevier Ltd.
URI
http://hdl.handle.net/20.500.11750/3056
DOI
10.1016/j.electacta.2014.05.145
Publisher
Elsevier Ltd
Related Researcher
Files:
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Collection:
Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


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