Catalyzed microelectrode mediated by polypyrrole/Nafion® composite film for microfabricated fuel cell applications
2006; Elsevier BV; Volume: 9; Issue: 1 Linguagem: Inglês
10.1016/j.elecom.2006.08.040
ISSN1873-1902
AutoresChunhua Feng, P.C.H. Chan, I‐Ming Hsing,
Tópico(s)Electrocatalysts for Energy Conversion
ResumoA novel Si-based micromachined electrode composed of polypyrrole (PPy)/Nafion® 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® 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 H2/O2 feed.
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