Novel MWCNT interconnected NiCo2O4 aerogels prepared by a supercritical CO2 drying method for ethanol electrooxidation in alkaline media

Authors
Jayaseelan, Santhana SivabalanKo, Tae-HoonRadhakrishnan, S.Yang, Cheol-MinKim, Hak-YongKim, Byoung-Suhk
Issue Date
2016-08-17
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.41, no.31, pp.13504 - 13512
Abstract
The design and development of an economic and highly active non-precious electrocatalyst for ethanol electro-oxidation is challenging due to expensiveness of the precursors as well as processes and non-Eco friendliness. In this study, a novel preparation of mesoporous NiCo2O4-MWCNT nanocomposite aerogels based on sol gel technique is proposed. Multiwall carbon nanotube (MWCNT)-supported NiCo2O4 nanocomposite aerogels as an efficient catalyst for the ethanol electro-oxidation is reported. The MWCNTs exhibit an interconnected fibrous network with uniform dispersion of NiCo2O4 nanoparticles. The effects of MWCNT concentration on the ethanol electro-oxidation of MWCNT/NiCo2O4 aerogels are studied. We found that using a proper loading of MWCNTs allowed us to reach higher current densities for the oxidation of ethanol in an alkaline media. The highly porous and fibrous MWCNT/NiCo2O4 aerogels are the promising electro-catalysts for the oxidation of a direct ethanol fuel cell. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Keywords
REDUCED GRAPHENE OXIDE; ELECTROCHEMICAL OXIDATION; METHANOL; NANOPARTICLES; ELECTRODE; BEHAVIOR; NIO; REDUCED GRAPHENE OXIDE; ELECTROCHEMICAL OXIDATION; METHANOL; NANOPARTICLES; ELECTRODE; BEHAVIOR; NIO; Nickel cobaltite; Aerogels; Electro-oxidation; Ethanol oxidation; Fuel cell
ISSN
0360-3199
URI
https://pubs.kist.re.kr/handle/201004/123784
DOI
10.1016/j.ijhydene.2016.05.175
Appears in Collections:
KIST Article > 2016
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