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Nitrogen-doped Multi-walled Carbon Nanotubes-MnCo2O4 microsphere as electrocatalyst for efficient oxygen reduction reaction

Title
Nitrogen-doped Multi-walled Carbon Nanotubes-MnCo2O4 microsphere as electrocatalyst for efficient oxygen reduction reaction
Authors
Yuvaraj, S.Vignesh, A.Shanmugam, S.Selvan, R. Kalai
DGIST Authors
Vignesh, A.; Shanmugam, S.
Issue Date
2016-09
Citation
International Journal of Hydrogen Energy, 41(34), 15199-15207
Type
Article
Article Type
Article
Keywords
Carbon NanotubeMnCo2O4Oxygen Reduction Reaction
ISSN
0360-3199
Abstract
Nitrogen-doped Multi-walled Carbon Nanotubes (N-doped MWCNT)/MnCo2O4 hybrid is synthesized by a facile hydrothermal method. The X-ray diffraction studies revealed the single phase formation of cubic spinel structured MnCo2O4 and their composites. The presence of D and G band of MWCNT is identified through Raman spectral analysis. The elemental oxidation state and nitrogen content is obtained using X-ray photoelectron spectroscopy, which elucidates that Co and Mn exists in multivalence state and the nitrogen functional groups are in pyrolytic and pyridinic-type. FE-SEM shows the microsphere formation of MnCo2O4 and size exhibits in the range of 6-9 μm. The N-doped MWCNT/MnCo2O4 hybrid catalyst exhibits an improved oxygen reduction electrocatalytic activity in an aqueous alkaline medium when compared with pristine MnCo2O4. © 2016 Hydrogen Energy Publications LLC.
URI
http://hdl.handle.net/20.500.11750/2199
DOI
10.1016/j.ijhydene.2016.06.115
Publisher
Elsevier Ltd
Related Researcher
Files:
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Collection:
Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


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