Proton-exchange-membrane fuel cells durability evaluated by load-on/off cycling

被引：34
作者：
Janssen, G. J. M. [1 ]
Sitters, E. F. [1 ]
Pfrang, A. [2 ]
机构：
[1] Netherlands ECN, Energy Res Ctr, Dept Hydrogen & Clean Fossil Fuels, NL-1755 ZG Petten, Netherlands
[2] Commiss European Communities, Joint Res Ctr, Inst Energy, NL-1755 ZG Petten, Netherlands
来源：
JOURNAL OF POWER SOURCES | 2009年 / 191卷 / 02期
关键词：
Proton-exchange-membrane fuel cell; Cathode active layer; Durability; Transport properties; Accelerated stress test; GAS-DIFFUSION ELECTRODES; CATHODE CATALYST LAYER; ELECTROCHEMICAL IMPEDANCE; DEGRADATION MECHANISM; PEMFC; PERFORMANCE; PLATINUM; SPECTROSCOPY; ALLOY; RANGE;
D O I：
10.1016/j.jpowsour.2009.02.027
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：
Load-on/off cycles at 80 C, with near-saturated H-2 and air at ambient pressure were applied to investigate the durability of several types of membrane-electrode-assemblies (MEAs) for proton-exchange-membrane fuel cells (PEMFC). The ohmic resistance, H-2 cross-over, electrochemically active surface area (ECSA), protonic resistance of the cathode as well as the performances with H-2/air and H-2/O-2 were measured at regular-intervals. These data enabled a breakdown of the increase in cell voltage losses upon Cycling. Increase of kinetic losses was found in all MEAs but significant differences were obtained for the transport losses in the cathode catalyst layer, which either had a small or a substantial contribution to the overall voltage decay, depending oil the carbon type and ionomer loading. Membrane degradation did not contribute significantly in these tests. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：501 / 509
页数：9
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