Influence of Preparation Method on the Electrochemical Performance of Pt/Carbon Aerogel Catalyst

WEI Songli; WU Dingcai; FU Ruowen

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Influence of Preparation Method on the Electrochemical Performance of Pt/Carbon Aerogel Catalyst

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- Influence of Preparation Method on the Electrochemical Performance of Pt/Carbon Aerogel Catalyst
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 49, Issue 5, Pages: 72-76(2010)
- 作者机构：
  
  中山大学化学与化学工程学院∥聚合物复合材料及功能材料教育部重点实验室,广东,广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010，
  
  Published Online：25 September 2010，
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WEI Songli, WU Dingcai, FU Ruowen. Influence of Preparation Method on the Electrochemical Performance of Pt/Carbon Aerogel Catalyst. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 49(5):72-76(2010)
DOI：

WEI Songli, WU Dingcai, FU Ruowen. Influence of Preparation Method on the Electrochemical Performance of Pt/Carbon Aerogel Catalyst. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 49(5):72-76(2010) DOI：

摘要

以炭气凝胶为载体，分别以甲醛、硼氢化钠和乙二醇为还原剂制备了Pt/CA 催化剂。采用XRD技术对催化剂上Pt的分散度和粒径大小进行了分析。结果表明，以乙二醇为还原剂制备的Pt/CA催化剂上Pt分布最均匀，粒径为2.2 nm。通过电化学性能测试，发现3种催化剂的活性大小顺序为Pt/CA-EG＞Pt/CA-HCHO＞Pt/CA-NaBH

其中催化剂Pt/CA-EG的电化学活性比表面积达到74.1 m

/g，比质量活性达到248.8 A/g，并且其电化学性能远远好于商用催化剂。

Abstract

Platinum catalysts supported on carbon aerogel (Pt/CA) were prepared by different reducing agents

including in HCHO

NaBH

and EG (ethylene glycol). The Pt/CA catalysts were characterized by X-ray diffraction and cyclic voltammetry. The results indicated that the Pt/CA catalysts synthesized with ethylene glycol reducing agent achieved an extremely uniform Pt dispersion. The size of the Pt nanoparticles was 2.2 nm. Electrochemical analysis showed that the activity order was Pt/CA-EG

Pt/CA-HCHO

Pt/CA-NaBH

. The electrochemical active area and mass activity of the Pt/CA-EG catalyst reached 74.1 m

/g and 248.8 A/g

respectively

which were significantly higher than those of commercial Pt/C catalysts.

关键词

直接甲醇燃料电池炭气凝胶Pt/CA催化剂乙二醇还原法

Keywords

direct methanol fuel cellscarbon aerogelPt/carbon aerogel catalystethylene glycol

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