能源化学(英文版)

能源化学(英文) ›› 2013, Vol. 22 ›› Issue (3): 477-483.

• Articles • 上一篇    下一篇

In situ grown nanoscale platinum on carbon powder as catalyst layer in proton exchange membrane fuel cells (PEMFCs)

Sheng Suia, Xiaolong Zhuoa, Kaihua Sua, Xianyong Yaoa, Junliang Zhanga, Shangfeng Dub, Kevin Kendallb   

  1. a. Institute of Fuel Cell, Shanghai Jiao Tong University, 200240 Shanghai, China;
    b. School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
  • 收稿日期:2012-12-10 修回日期:2013-03-29 出版日期:2013-05-20 发布日期:2013-05-31
  • 通讯作者: Sheng Sui
  • 基金资助:

    This work was supported by the Royal Academy of Engineering, United Kingdom.

In situ grown nanoscale platinum on carbon powder as catalyst layer in proton exchange membrane fuel cells (PEMFCs)

Sheng Suia, Xiaolong Zhuoa, Kaihua Sua, Xianyong Yaoa, Junliang Zhanga, Shangfeng Dub, Kevin Kendallb   

  1. a. Institute of Fuel Cell, Shanghai Jiao Tong University, 200240 Shanghai, China;
    b. School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
  • Received:2012-12-10 Revised:2013-03-29 Online:2013-05-20 Published:2013-05-31
  • Supported by:

    This work was supported by the Royal Academy of Engineering, United Kingdom.

被引次数

14

摘要： An extensive study has been conducted on the proton exchange membrane fuel cells (PEMFCs) with reducing Pt loading. This is commonly achieved by developing methods to increase the utilization of the platinum in the catalyst layer of the electrodes. In this paper, a novel process of the catalyst layers was introduced and investigated. A mixture of carbon powder and Nafion solution was sprayed on the glassy carbon electrode (GCE) to form a thin carbon layer. Then Pt particles were deposited on the surface by reducing hexachloroplatinic (IV) acid hexahydrate with methanoic acid. SEM images showed a continuous Pt gradient profile among the thickness direction of the catalytic layer by the novel method. The Pt nanowires grown are in the size of 3 nm (diameter)?10 nm (length) by high solution TEM image. The novel catalyst layer was characterized by cyclic voltammetry (CV) and scanning electron microscope (SEM) as compared with commercial Pt/C black and Pt catalyst layer obtained from sputtering. The results showed that the platinum nanoparticles deposited on the carbon powder were highly utilized as they directly faced the gas diffusion layer and offered easy access to reactants (oxygen or hydrogen).

关键词: platinum, catalyst layer, carbon powder layer, proton exchange membrane fuel cells

Abstract: An extensive study has been conducted on the proton exchange membrane fuel cells (PEMFCs) with reducing Pt loading. This is commonly achieved by developing methods to increase the utilization of the platinum in the catalyst layer of the electrodes. In this paper, a novel process of the catalyst layers was introduced and investigated. A mixture of carbon powder and Nafion solution was sprayed on the glassy carbon electrode (GCE) to form a thin carbon layer. Then Pt particles were deposited on the surface by reducing hexachloroplatinic (IV) acid hexahydrate with methanoic acid. SEM images showed a continuous Pt gradient profile among the thickness direction of the catalytic layer by the novel method. The Pt nanowires grown are in the size of 3 nm (diameter)?10 nm (length) by high solution TEM image. The novel catalyst layer was characterized by cyclic voltammetry (CV) and scanning electron microscope (SEM) as compared with commercial Pt/C black and Pt catalyst layer obtained from sputtering. The results showed that the platinum nanoparticles deposited on the carbon powder were highly utilized as they directly faced the gas diffusion layer and offered easy access to reactants (oxygen or hydrogen).

Key words: platinum, catalyst layer, carbon powder layer, proton exchange membrane fuel cells