直接甲醇燃料电池用Co－N－C 电催化剂的制备及性能

华南理工大学学报(自然科学版) ›› 2012, Vol. 40 ›› Issue (3): 10-14.

直接甲醇燃料电池用Co－N－C 电催化剂的制备及性能

杨伟¹ 陈胜洲^2† 董新法¹ 林维明^1,2

1．华南理工大学化学与化工学院，广东广州 510640; 2．广州大学化学化工学院，广东广州 510006

收稿日期:2011-11-18 修回日期:2011-12-06 出版日期:2012-03-25 发布日期:2012-02-01
通信作者: 陈胜洲(1967-) ，男，教授，主要从事燃料电池电催化研究． E-mail: szchen@gzhu.edu.cn E-mail:ethanyang@ yahoo.cn
作者简介:杨伟(1982-) ，男，博士生，主要从事燃料电池电催化研究．
基金资助:
国家自然科学基金资助项目( 21076048) ; 广东省科技计划项目( 2009B011000022)

Preparation and Performance of Co－N－C Electro-Catalysts for Direct Methanol Fuel Cell

Yang Wei¹ Chen Sheng-zhou² Dong Xin-fa¹ Lin Wei-ming^1,2

1．School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640Guangdong,China; 2．School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,Guangdong,China

Received:2011-11-18 Revised:2011-12-06 Online:2012-03-25 Published:2012-02-01
Contact: 陈胜洲(1967-) ，男，教授，主要从事燃料电池电催化研究． E-mail: szchen@gzhu.edu.cn E-mail:ethanyang@ yahoo.cn
About author:杨伟(1982-) ，男，博士生，主要从事燃料电池电催化研究．
Supported by:
国家自然科学基金资助项目( 21076048) ; 广东省科技计划项目( 2009B011000022)

摘要/Abstract

摘要： 以三聚氰胺甲醛树脂和硝酸钴为前驱体，在Ar 保护下采用高温碳化方法制备用于直接甲醇燃料电池( DMFC) 阴极的含氮碳载钴( Co－N－C) 氧还原电催化剂．利用热重与红外光谱联用、X 射线衍射分析、元素分析等方法表征了催化剂的制备过程和结构，采用旋转圆盘电极测试考察了不同碳化温度对Co－N－C 电催化剂氧还原催化活性的影响及电催化剂的耐醇性能，并采用该催化剂为阴极催化剂进行DMFC 单电池测试．结果表明: Co－N－C 电催化剂具有较高的电催化活性和较好的耐醇性能; 其氧还原起始电位在0. 5 V( vs．SCE) 左右; 700℃碳化温度下制备的Co－N－C 电催化剂具有最高的氧还原催化活性．

关键词: 直接甲醇燃料电池, 阴极催化剂, 三聚氰胺甲醛树脂, 耐甲醇性能

Abstract:

Co－N－C oxygen reduction electro-catalysts for the cathode of the direct methanol fuel cell ( DMFC) were first prepared via the pyrolysis in Ar atmosphere,with melamine formaldehyde resin and cobalt nitrate as the precursors. Then,the preparation and structure of the electro-catalysts were investigated by means of TG-FTIR,XRD and element analysis,and the electro-catalytic activity for oxygen reduction reaction as well as the methanol tolerance of the electro-catalysts was detected by using a rotating disk electrode. Finally,a DMFC single-cell test was carried out by using the prepared electro-catalysts as the cathode catalysts. The results indicate that Co－N－C electro-catalysts are of high electro-catalytic activity and strong methanol tolerance,and that the onset potential of the electro-catalysts for oxygen reduction is about 0.5V ( vs.SCE) . Moreover,it is found that the catalyst prepared at 700℃ possesses the highest electro-catalytic activity for oxygen reduction reaction.

Key words: direct methanol fuel cell, cathode catalyst, melamine formaldehyde resin, methanol tolerance

中图分类号:

TQ 423. 93

杨伟陈胜洲董新法林维明. 直接甲醇燃料电池用Co－N－C 电催化剂的制备及性能[J]. 华南理工大学学报(自然科学版), 2012, 40(3): 10-14.

Yang Wei Chen Sheng-zhou Dong Xin-fa Lin Wei-ming. Preparation and Performance of Co－N－C Electro-Catalysts for Direct Methanol Fuel Cell[J]. Journal of South China University of Technology(Natural Science Edition), 2012, 40(3): 10-14.