A Pt-free catalyst for oxygen reduction reaction based on Fe-N multiwalled carbon nanotube composites

被引：53
|
作者：
Merzougui, Belabbes [1 ,2 ]
Hachimi, Abdouelilah [1 ,2 ]
Akinpelu, Akeem [1 ,2 ]
Bukola, Saheed [1 ,2 ]
Shao, Minhua [3 ]
机构：
[1] King Fahd Univ Petr & Minerals, Ctr Nanotechnol CENT, Dhahran 31261, Saudi Arabia
[2] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia
[3] UTC Power, South Windsor, CT 06074 USA
来源：
ELECTROCHIMICA ACTA | 2013年 / 107卷
关键词：
Non precious metal catalysts; Oxygen reduction reaction; Durability; Methanol tolerance; ELECTROCATALYST; IRON; NANOCRYSTALS; PERFORMANCE; GRAPHENE; FUTURE;
D O I：
10.1016/j.electacta.2013.06.016
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
An iron-based non-precious metal (NPM) catalyst was synthesized by chemically coating a polymer containing nitrogen, such as polyaniline (PANI), on multiwalled carbon nanotubes (MWCNTs), followed by iron complexation and heat treatment in a decomposable source of nitrogen (ammonia) at high temperature. Its excellent activities for oxygen reduction reaction (ORR) in both acidic and alkaline media were confirmed by thin film rotating disk electrode technique. Also, durability test was performed in both media. After 20,000(0.65-1.0 V) potential cycles, the half-wave potential decayed by only 40 mV in 0.1 M HClO4, while in 0.1 M KOH it gained 25 mV. In addition, no activity decay was observed by adding methanol in the acidic solution indicating its excellent tolerance to methanol oxidation. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：126 / 132
页数：7
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