Non-noble metal oxygen reduction electrocatalysts based on carbon nanotubes with controlled nitrogen contents

被引：95

作者：

Geng, Dongsheng ^{[1
]}

Liu, Hao ^{[1
]}

Chen, Yougui ^{[1
]}

Li, Ruying ^{[1
]}

Sun, Xueliang ^{[1
]}

Ye, Siyu ^{[2
]}

Knights, Shanna ^{[2
]}

机构：

[1] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

[2] Ballard Power Syst Inc, Burnaby, BC V5J 5J8, Canada

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 04期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

Oxygen reduction reaction; Nitrogen doped carbon nanotubes; Proton exchang e membrane fuel cells; Rotating ring disk electrode; ELECTROLYTE FUEL-CELLS; DOPED CARBON; O-2; REDUCTION; DISK ELECTRODE; CATALYSTS; COMPOSITES; RU;

D O I：

10.1016/j.jpowsour.2010.09.084

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nitrogen-doped carbon nanotubes (CN(x)) were prepared via a floating catalyst chemical vapor deposition method using precursors consisting of ferrocene and melamine to control the nitrogen content Structure morphology and composition of all CN(x) catalysts were characterized by SEM TEM and XPS These results indicated that the surface nitrogen content (up to 7 7 at %) increases with the increase of melamine used Electrochemical methods were used to study the correlation between surface structure and the activity of oxygen reduction reaction (ORR) in acid and alkaline solutions Electrochemical data indicated that the higher the nitrogen content is the higher the oxygen reduction activity Especially the results from the rotating ring disk electrode technique demonstrated that CN(x) (7 7%) has similar ORR activity and selectivity with commercial Pt/C in alkaline solution (C) 2010 Elsevier B V All rights reserved

引用

页码：1795 / 1801

页数：7

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