Surfactant Assisted Catalyst Layer Deposition for PEM Fuel Cells

被引：0

作者：

Bauer, A. ^{[1
]}

Wilkinson, D. P. ^{[1
]}

Gyenge, E. L. ^{[1
]}

Bizzotto, D. ^{[2
]}

Ye, S. ^{[3
]}

机构：

[1] Univ British Columbia, Dept Biol & Chem Engn, Vancouver, BC V6T 1Z3, Canada

[2] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z4, Canada

[3] Ballard Power Syst, Burnaby V5J 5J8, BC, Canada

来源：

PROTON EXCHANGE MEMBRANE FUEL CELLS 8, PTS 1 AND 2 | 2008年 / 16卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1149/1.2982019

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The potentiostatic electrodeposition of platinum onto gold coated Si wafers and a gold rotating disk electrode (RDE) was carried out with non-ionic surfactants that functioned as templating agents to obtain mesoporous deposits with size features in the nanometer range. The particle size and morphology were studied by surface analysis (SEM and AFM). The electrochemically active surface area of Pt electrodeposited onto the RDE by using a mixture of Brij 56 and n-heptane was increased by a factor of similar to 2 compared to Pt deposited without structure directing additives. Corresponding oxygen reduction tests at 2500 rpm revealed an improvement of about 14 % (from 5.9 to 7.2 x 10(-4) A cm(-2)) for the cathodic current density at 0.9 V vs. RHE while the mass transfer limited current density was increased by similar to 25 % from 4.4 to 5.5 x 10(-3) A cm(-2).

引用

页码：1787 / +

页数：3

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