期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 8, 期 1, 页码 232-237出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201200800
关键词
carbon nanotubes; electrocatalysts; ionic liquids; metal-free; oxygen reduction
资金
- Seoul RD program [ST100032]
- Korea Research Foundation [KRF-20120005673]
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 p-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.
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