Nitrogen doped carbon nanotubes and their impact on the oxygen reduction reaction in fuel cells

被引：354

作者：

Chen, Zhu ^{[1
]}

Higgins, Drew ^{[1
]}

Chen, Zhongwei ^{[1
]}

机构：

[1] Univ Waterloo, Waterloo Inst Sustainable Energy, Waterloo Inst Nanotechnol, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada

来源：

CARBON | 2010年 / 48卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

FE-BASED CATALYSTS; ELECTROCHEMICAL CHARACTERIZATION; ACTIVE-SITES; PLATINUM; PYROLYSIS; STORAGE; ENERGY; ELECTROCATALYSIS; PERFORMANCE; MECHANISM;

D O I：

10.1016/j.carbon.2010.04.038

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 (N-CNTs) with different nitrogen contents were synthesized as non-precious catalysts for oxygen reduction reaction (ORR) through varying the relative amount of pyridine and ethanol in the stock solution. The structural and chemical properties of the N-CNTs were investigated using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The characterizations indicated that an increase in the pyridine to ethanol ratio of the stock solution produced N-CNTs with higher nitrogen contents. The electrocatalytic activity of N-CNTs towards ORR in alkaline conditions was evaluated using rotating ring disc electrode voltammetry which showed a positive correlation between nitrogen content and ORR activities. By combining the results of ORR activity and material characterization, it is concluded that an increase in the nitrogen content of N-CNTs can effectively improve the ORR activities. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3057 / 3065

页数：9

共 59 条

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