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Insight into the origin of the positive effects of imidazolium salt on electrocatalytic activity: Ionic carbon nanotubes as metal-free electrocatalysts for oxygen reduction reaction

Title
Insight into the origin of the positive effects of imidazolium salt on electrocatalytic activity: Ionic carbon nanotubes as metal-free electrocatalysts for oxygen reduction reaction
Authors
Kim Y.S.Shin J.Y.Jeon H.J.Cha A.Lee C.Lee S.-G.
Ewha Authors
이종목이상기
SCOPUS Author ID
이종목scopus; 이상기scopus
Issue Date
2013
Journal Title
Chemistry - An Asian Journal
ISSN
1861-4728JCR Link
Citation
vol. 8, no. 1, pp. 232 - 237
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We report remarkable metal-free electrocatalytic activities of the imidazolium salt-functionalized ionic multi-walled carbon nanotubes (IM-f-MWCNTs) in the oxygen reduction reaction (ORR). The electrocatalytic activity can be attributed to the induced polarization of the π-electrons of CNTs, thus accelerating interfacial electron transfer. The zwitterionic MWCNTs functionalized with poly(vinylimidazolium sulfonate) have a more positive surface charge and exhibit a better electrocatalytic activity than the poly(vinylbutylimidazolium chloride)-functionalized MWCNTs. The IM-f-MWCNTs showed better fuel selectivity than the commercial Pt/C electrocatalyst. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
DOI
10.1002/asia.201200800
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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