Advanced Water Management in PEFCs: Diffusion Layers with Patterned Wettability

被引：69

作者：

Forner-Cuenca, A. ^{[1
]}

Biesdorf, J. ^{[1
]}

Manzi-Orezzoli, V. ^{[1
]}

Gubler, L. ^{[1
]}

Schmidt, T. J. ^{[1
,2
]}

Boillat, P. ^{[1
,3
]}

机构：

[1] Paul Scherrer Inst, Electrochem Lab, CH-5232 Villigen, Switzerland

[2] Swiss Fed Inst Technol, Dept Chem & Appl Biosci, Lab Phys Chem, CH-8093 Zurich, Switzerland

[3] Paul Scherrer Inst, Neutron Imaging & Activat Grp, CH-5232 Villigen, Switzerland

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 13期

基金：

瑞士国家科学基金会;

关键词：

PEM FUEL-CELL; MICRO-POROUS LAYER; MICROPOROUS LAYER; PERFORMANCE; TRANSPORT; IMPROVEMENT; OPERATION; CATHODE; IMPACT;

D O I：

10.1149/2.0891613jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Following our two previous publications on material synthesis and on ex situ characterization, we present an experimental in situ study to evaluate the effects of using gas diffusion layers with patterned wettability at the cathode side of polymer electrolyte fuel cells. The operando performance was assessed using traditional electrochemical diagnostics (such as polarization curves) combined with the pulsed gas analysis (PGA) method, which allows measuring the mass transport losses. Neutron radiography was performed simultaneously in order to image the water distribution during operation. Using this methodology, the effects of changing the pattern, including a microporous layer (MPL), and varying the operation conditions (temperature and relative humidity of the cathode gas) have been systematically evaluated. It has been confirmed that water redistributes according to the engineered pattern and that the power density is significantly increased thanks to reduced mass transport losses under various conditions. (C) The Author(s) 2016. Published by ECS. All rights reserved.

引用

页码：F1389 / F1398

页数：10

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