Novel method for preparation of PEMFC electrodes by the electrospray technique

被引:77
作者
Benítez, R
Soler, J
Daza, L
机构
[1] CIEMAT, Dpto Combustibles Fosiles, Madrid 28040, Spain
[2] CSIC, Inst Catalisis & Petroleoquim, Madrid 20049, Spain
关键词
PEMFC; MEA; electrodes; electrospraying;
D O I
10.1016/j.jpowsour.2005.02.047
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
A novel method based on the electrospray technique has been developed for the preparation of electrodes for proton exchange membrane fuel cells (PEMFC). The material obtained was characterized by different techniques, which showed both morphological and structural improvements that contribute to a better catalyst utilization compared to conventional methods. These facts were corroborated after manufacturing several membrane electrode assemblies (MEAs) with electrodes prepared by three different methods. MEAs obtained by means of the electrospray technique exhibited three times higher power density than those prepared by the impregnation method ones and eight times higher than MEAs made with electrodes prepared by the spray technique with platinum loadings of 0.5 mg cm(-2). Moreover, the power density obtained was twice better than a commercial E-TEK. This technique can be scaled up and becomes a volume production method using a low-cost process. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:108 / 113
页数:6
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