Catalyzed microelectrode mediated by polypyrrole/Nafion® composite film for microfabricated fuel cell applications

被引：31

作者：

Feng, Chunhua

Chan, Philip C. H.

Hsing, I. -Ming

机构：

[1] Dept Chem Engn, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 01期

关键词：

polypyrrole/Nafion (R); fuel cell; microfabrication; nanocatalysts; Si;

D O I：

10.1016/j.elecom.2006.08.040

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel Si-based micromachined electrode composed of polypyrrole (PPy)/Nafion (R) film and electrochemically deposited Pt nanocatalysts was prepared for the microfabricated fuel cell applications. In addition to its high surface area to host nanocatalyst particles, the PPy/Nafion (R) composite film offers good electron and proton conductivity and the fabrication of such films is largely compatible with the micromachining process. The resulted catalyzed microelectrodes exhibit high electrochemical active surface area and high catalyst utilization. The corresponding Si-based micro membrane-electrode-assembly demonstrates good cell polarization characteristics using the H-2/O-2 feed. (c) 2006 Elsevier B.V. All rights reserved.

引用

收藏

页码：89 / 93

页数：5

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