Non-PGM membrane electrode assemblies: Optimization for performance

被引：34
作者：
Stariha, Sarah
Artyushkova, Kateryna
Serov, Alexey
Atanassov, Plamen [1 ]
机构：
[1] Univ New Mexico, Dept Chem & Biol Engn, Albuquerque, NM 87131 USA
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 42期
关键词：
Non-platinum electrocatalysts; Membrane electrode assembly; Nafion ionomer content; Polarization curve; Multivariate analysis; PEM FUEL-CELL; ELECTRICAL-CONDUCTIVITY; NONPLATINUM CATHODE; CATALYST LAYERS; IONOMER CONTENT; INK COMPOSITION; CARBON SUPPORT; ELECTROREDUCTION; POWDERS; IRON;
D O I：
10.1016/j.ijhydene.2015.05.185
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：
The performance of non-platinum group metals (non-PGM) iron nitrogen carbon (Fe-N-C) based cathode in fuel cell operation conditions was studied. The effect of Nafion to catalyst ratio as well as carbon additives on the activity was studied. It was found that ionomer plays a key role in proton and water transport within the MEA. To compensate intrinsic low electronic conductivity of Fe-N-C materials additional carbons such as Vulcan XC72R, Ketjen Black 600 EC, and carbon nanotubes (CNTs) were added to MEA inks. X-ray Phototelectron Spectroscopy studied the effect of these carbon additives on chemical composition of catalysts. It was determined that inks with 35 wt% of Nafion ionomer resulted in the optimal performance of the Fe-N-C cathode catalyst in the air. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：14676 / 14682
页数：7
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