In-plane structuring of proton exchange membrane fuel cell cathodes: Effect of ionomer equivalent weight structuring on performance and current density distribution

被引：30

作者：

Herden, Susanne ^{[1
]}

Riewald, Felix ^{[1
]}

Hirschfeld, Julian A. ^{[1
]}

Perchthaler, Markus ^{[1
]}

机构：

[1] BMW Grp, D-80788 Munich, Germany

来源：

JOURNAL OF POWER SOURCES | 2017年 / 355卷

关键词：

PEM fuel cell; Structured cathode electrode; Ionomer equivalent weight structuring; Current density measurement; Catalyst-coated membrane current distribution; CATALYST LAYERS; RELATIVE-HUMIDITY; TEMPERATURE; ELECTRODES; CONDUCTION; DESIGN; STACK; AREA;

D O I：

10.1016/j.jpowsour.2017.04.051

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：

Within the active area of a fuel cell inhomogeneous operating conditions occur, however, state of the art electrodes are homogenous over the complete active area. This study uses current density distribution measurements to analyze which ionomer equivalent weight (EW) shows locally the highest current densities. With this information a segmented cathode electrode is manufactured by decal transfer. The segmented electrode shows better performance especially at high current densities compared to homogenous electrodes. Furthermore this segmented catalyst coated membrane (CCM) performs optimal in wet as well as dry conditions, both operating conditions arise in automotive fuel cell applications. Thus, cathode electrodes with an optimized ionomer EW distribution might have a significant impact on future automotive fuel cell development. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：36 / 43

页数：8

共 26 条

[1] Measurement of current distribution in a proton exchange membrane fuel cell with various flow arrangements - A parametric study [J].