Cited 1 time in webofscience Cited 3 time in scopus

Graphitic Carbon-NiCo Nanostructures as Efficient Non-Precious-Metal Electrocatalysts for the Oxygen Reduction Reaction

Title
Graphitic Carbon-NiCo Nanostructures as Efficient Non-Precious-Metal Electrocatalysts for the Oxygen Reduction Reaction
Authors
Sivanantham, ArumugamShanmugam, Sangaraju
DGIST Authors
Shanmugam, Sangaraju
Issue Date
2018-07
Citation
ChemElectroChem, 15(14), 1937-1943
Type
Article
Article Type
Article
Keywords
AlkalinityCatalyst activityChemical stabilityCobalt alloysComposite materialsElectrocatalystsElectrolytic reductionOxygenPrecious metalsThermal effectsAlkaline conditionsAnnealing temperaturesGraphitic carbonsHalf-wave potentialMetal alloysNon-precious metal catalystsOxygen reduction reactionPyrolysis temperaturePrecious metal alloys
ISSN
2196-0216
Abstract
Composites of graphitic carbon layers and transition metals or metal alloys have received considerable attention for use as non-precious-metal catalysts for ecofriendly energy devices. In this paper, we report graphitic carbon-supported NiCo alloys (NiCo at GC) that function as non-precious-metal electrocatalysts for the oxygen reduction reaction under alkaline conditions. In particular, we examined the effect of the pyrolysis temperature on the oxygen reduction activity. The catalyst prepared at 600°C provided an oxygen reduction half-wave potential (E1/2) of 0.81V - only 10mV less than that of a commercial Pt/C catalyst (0.82V) - with the transfer of almost four electrons. Structural and chemical studies indicated that the excellent activity and stability of the NiCo at GC catalysts resulted from the strong interactions between (and the combined effects of) the metal and the carbon, dictated by the annealing temperature. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
URI
http://hdl.handle.net/20.500.11750/6241
DOI
10.1002/celc.201800081
Publisher
Wiley-VCH Verlag
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
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE