Single-wall carbon nanotubes supported platinum nanoparticles with improved electrocatalytic activity for oxygen reduction reaction

被引：271

作者：

Kongkanand, A

Kuwabata, S

Girishkumar, G

Kamat, P ^{[1
]}

机构：

[1] Univ Notre Dame, Radiat Lab, Dept Chem & Biochem, Notre Dame, IN 46556 USA

[2] Univ Notre Dame, Radiat Lab, Dept Chem & Biomol, Notre Dame, IN 46556 USA

[3] Osaka Univ, Grad Sch Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan

来源：

LANGMUIR | 2006年 / 22卷 / 05期

关键词：

D O I：

10.1021/la052753a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Significant enhancement in the electrocatalytic activity of Pt particles toward oxygen reduction reaction (ORR) has been achieved by depositing them on a single wall carbon nanotubes (SWCNT) support. Compared to a commercial Pt/carbon black catalyst, Pt/SWCNT films cast on a rotating disk electrode exhibit a lower onset potential and a higher electron-transfer rate constant for oxygen reduction. Improved stability of the SWCNT support is also confirmed from the minimal change in the oxygen reduction current during repeated cycling over a period of 36 h. These studies open up ways to utilize SWCNT/Pt electrocatalyst as a cathode in the proton-exchange-membrane-based hydrogen and methanol fuel cells.

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收藏

页码：2392 / 2396

页数：5

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