Hydrophilic-Hydrophobic Character of DMFC Cathode Catalyst Layers

被引：2

作者：

Capitanio, F. ^{[1
]}

Tavares, A. C. ^{[1
]}

机构：

[1] Inst Natl Rech Sci Energie Mat & Telecommun, Varennes, PQ J3X 1S2, Canada

来源：

ELECTRODE PROCESSES RELEVANT TO FUEL CELL TECHNOLOGY | 2010年 / 28卷 / 23期

关键词：

GAS-DIFFUSION ELECTRODES; FUEL-CELL ELECTRODES; IMPEDANCE SPECTROSCOPY;

D O I：

10.1149/1.3502340

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

DMFC composite cathodes, prepared from a 60 wt% Pt/Vulcan catalyst and by simultaneous deposition of Nafion and PTFE binders, were characterized in oxygen and nitrogen saturated H2SO4 0.5M solution by means of cyclic voltammetry and electrochemical impedance spectroscopy. The results showed the importance of the simultaneous presence in the catalyst layer structure of the hydrophilic and hydrophobic components, to provide the paths for the proton conduction and for the continuous supply of oxygen to the active sites.

引用

页码：81 / 88

页数：8

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