Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (3): 10-14.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

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

Yang Wei1  Chen Sheng-zhou2  Dong Xin-fa1  Lin Wei-ming1,2   

  1. 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)

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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

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