Catalyst Durability for Fuel Cells under Start-up and Shutdown Conditions: Evaluation of Ru and Ir Sputter-Deposited Films on Platinum in PEM Environment

被引：6

作者：

Atanasoska, L. L. ^{[1
]}

Vernstrom, G. D. ^{[1
]}

Haugen, G. M. ^{[1
]}

Atanasoski, R. T. ^{[1
]}

机构：

[1] 3M Corp Analyt Lab, St Paul, MN 55144 USA

来源：

POLYMER ELECTROLYTE FUEL CELLS 11 | 2011年 / 41卷 / 01期

关键词：

RAY PHOTOELECTRON-SPECTROSCOPY; POLYIMIDE INTERFACE FORMATION;

D O I：

10.1149/1.3635612

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical and surface properties of Ru, Ir and Ti over-layers sputter-deposited onto 3M Pt-coated nano-structured thin film (NSTF) substrate were evaluated in PEM environment. Ti was included because it is often combined with Ru and Ir to improve stability of these highly active catalysts for oxygen evolution reaction (OER). Different OER catalyst coating thicknesses were formed by varying Ru, Ir and Ti mass in the range of 1-10 mu g/cm(2) Pt-NSTF geometric area. The OER activity was assessed by quasi-steady state polarization measurements. The electrochemical data demonstrate that the OER catalytic activity of Ru and Ir in PEM compares well with their behavior in aqueous environment. The OER catalysts composition on Pt-NSTF was characterized by XPS. The XPS results indicate the organo-metallic bonds formation at the interface of Ru OER catalysts with Pt-NSTF.

引用

页码：785 / 795

页数：11

共 6 条

[1] SEMICONDUCTOR POLYIMIDE INTERFACE FORMATION - AN X-RAY PHOTOELECTRON-SPECTROSCOPY STUDY OF GERMANIUM CHEMICAL BONDING [J].