Enhanced stability of Pt electrocatalysts by nitrogen doping in CNTs for PEM fuel cells

被引：196

作者：

Chen, Yougui ^{[1
]}

Wang, Jiajun ^{[1
]}

Liu, Hao ^{[1
]}

Li, Ruyin ^{[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：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 10期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Fuel cells; PEM fuel cells; Carbon nanotubes; Nitrogen-doped carbon nanotubes; Pt stability; DOPED CARBON NANOTUBES; OXYGEN-REDUCTION; DURABILITY; SUPPORT; NANOPARTICLES; CATALYSTS;

D O I：

10.1016/j.elecom.2009.09.008

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical stabilities of Pt deposited on carbon nanotubes (CNTs) and nitrogen-doped carbon nanotubes (CNx) of different nitrogen contents are compared with accelerated durability tests (ADT) for the first time. Transmission electron microscopy (TEM) images reveal the different structures of CNTs and CNx, and the decrease of Pt particle size with the nitrogen incorporation into CNTs. Based on the loss of electrochemical surface area (ESA) and TEM images, Pt/CNx exhibited much higher stability than Pt/CNTs, and the Pt stability increases with the increase of nitrogen contents in the CNx supports. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2071 / 2076

页数：6

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