Water-Dispersible, Sulfonated Hyperbranched Poly(ether-ketone) Grafted Multiwalled Carbon Nanotubes as Oxygen Reduction Catalysts

被引：55

作者：

Sohn, Gyung-Joo ^{[1
]}

Choi, Hyun-Jung ^{[1
]}

Jeon, In-Yup ^{[1
]}

Chang, Dong Wook ^{[1
,2
]}

Dai, Liming ^{[3
]}

Baek, Jong-Beom ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, Interdisciplinary Sch Green Energy, Low Dimens Carbon Mat Ctr, Ulsan 689798, South Korea

[2] Catholic Univ Daegu, Dept Chem Systemat Engn, Hayang 712702, Gyungbuk, South Korea

[3] Case Western Reserve Univ, Dept Macromol Sci & Engn, Cleveland, OH 44106 USA

来源：

ACS NANO | 2012年 / 6卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

water dispersible; multiwalled carbon nanotube; hyperbranched polymer; electrocatalyst; oxygen reduction reaction; ELECTRON-MICROSCOPY; FUNCTIONALIZATION; COMPOSITES; ENERGY; SONOCHEMISTRY; CHEMISTRY; GRAPHENE; ACIDS;

D O I：

10.1021/nn301863d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To endorse sufficient water affinity to multiwalled carbon nanotubes (MWCNTs), dendritic hyperbranched poly(ether-ketone) (HPEK) was first covalently grafted to the surface of a MWCNT via a Friedel-Crafts acylation reaction. The resultant HPEK-grafted MWCNT (HPEK-g-MWCNT) was subsequently sulfonated in chlorosulfonic acid to produce sulfonated HPEK-g-MWCNT (SHPEK-g-MWCNT), which is dispersible well in water showing a zeta potential value of -57.8 mV. The SHPEK-g-MWCNT paper simply formed by filtration of aqueous dispersion has a sheet resistance as low as 63 Omega/sq. Its thin film shows a high electrocatalytic activity for oxygen reduction reaction (ORR). Thus, the newly produced water-dispersible MWCNT is a new class of high performance cathode material for ORR.

引用

页码：6345 / 6355

页数：11

共 53 条

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