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

Youn Soo Kim; Ju Yeon Shin; Hyun Ji Jeon; Areum Cha; Chongmok Lee; Sang Gi Lee

doi:10.1002/asia.201200800

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

Youn Soo Kim, Ju Yeon Shin, Hyun Ji Jeon, Areum Cha, Chongmok Lee, Sang Gi Lee

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

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.

Original language	English
Pages (from-to)	232-237
Number of pages	6
Journal	Chemistry - An Asian Journal
Volume	8
Issue number	1
DOIs	https://doi.org/10.1002/asia.201200800
State	Published - Jan 2013

Keywords

carbon nanotubes
electrocatalysts
ionic liquids
metal-free
oxygen reduction

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10.1002/asia.201200800

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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",

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.",

keywords = "carbon nanotubes, electrocatalysts, ionic liquids, metal-free, oxygen reduction",

author = "Kim, {Youn Soo} and Shin, {Ju Yeon} and Jeon, {Hyun Ji} and Areum Cha and Chongmok Lee and Lee, {Sang Gi}",

year = "2013",

month = jan,

doi = "10.1002/asia.201200800",

language = "English",

volume = "8",

pages = "232--237",

journal = "Chemistry - An Asian Journal",

issn = "1861-4728",

publisher = "John Wiley and Sons Ltd",

number = "1",

}

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. / Kim, Youn Soo; Shin, Ju Yeon; Jeon, Hyun Ji et al.
In: Chemistry - An Asian Journal, Vol. 8, No. 1, 01.2013, p. 232-237.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Insight into the origin of the positive effects of imidazolium salt on electrocatalytic activity

T2 - Ionic carbon nanotubes as metal-free electrocatalysts for oxygen reduction reaction

AU - Kim, Youn Soo

AU - Shin, Ju Yeon

AU - Jeon, Hyun Ji

AU - Cha, Areum

AU - Lee, Chongmok

AU - Lee, Sang Gi

PY - 2013/1

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N2 - 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.

AB - 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.

KW - carbon nanotubes

KW - electrocatalysts

KW - ionic liquids

KW - metal-free

KW - oxygen reduction

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U2 - 10.1002/asia.201200800

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VL - 8

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EP - 237

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IS - 1

ER -

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

Abstract

Keywords

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