The use of CO stripping for in situ fuel cell catalyst characterization

被引：220

作者：

Vidakovic, Tanja

Christov, Mihai

Sundmacher, Kai

机构：

[1] Max Planck Inst Dynam Complex Tech Syst, D-39106 Magdeburg, Germany

[2] Univ Chem Technol & Met, Dept Chem Phys, BU-1756 Sofia, Bulgaria

[3] Otto Von Guericke Univ, D-39106 Magdeburg, Germany

来源：

ELECTROCHIMICA ACTA | 2007年 / 52卷 / 18期

关键词：

surface area determination; CO stripping; cyclic voltammetry; PtRu catalyst; membrane electrode assembly (MEA);

D O I：

10.1016/j.electacta.2006.12.057

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

An important parameter in normalizing activities of porous electrocatalysts is real surface area of the catalyst. In this study CO stripping voltammetry was applied for the determination of the surface area of PtRu catalysts in a membrane electrode assembly. The difficulties in applying this method are summarized and a practical solution for the "accurate" voltammetric CO charge determination is suggested. The influence of adsorption time, potential, sweeping range and sweep rate on voltammetric CO charge determination is studied. It is shown that the CO charge determined in this way is independent on the sweep rate applied. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：5606 / 5613

页数：8

共 23 条

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