Sputter-deposited ultra-low catalyst loadings for PEM fuel cells

被引：88

作者：

Gruber, D ^{[1
]}

Ponath, N ^{[1
]}

Müller, J ^{[1
]}

Lindstaedt, F ^{[1
]}

机构：

[1] Hamburg Univ Technol, Dept Micro Syst Technol, D-21071 Hamburg, Germany

来源：

JOURNAL OF POWER SOURCES | 2005年 / 150卷

关键词：

sputter deposition; platinum thin film; catalyst; polymer electrolyte membrane (PEM) fuel cell;

D O I：

10.1016/j.jpowsour.2005.02.076

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：

Sputter-deposited Pt thin film layers are employed as catalyst material for polymer electrolyte membrane (PEM) fuel cells. An ultra-low catalyst loading of 5 mu g cm(-2) platinum results in a maximum power density of 124-132 mW cm(-2) depending on the gas diffusion layer substrate when feeding H-2/O-2 at ambient temperature and pressure. By using the sputter deposition process less catalyst is needed for comparable cell performance to contemporary standard electrodes loaded with 1 Mg cm(-2) Pt that have been used for reference. Catalyst layers sputter-deposited onto different porous electrodes are investigated with respect to their effect on characteristic fuel cell performance which improves by 8% after adding chromium or palladium thin film layers. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：67 / 72

页数：6

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