Surface modification of gas diffusion layers by inorganic nanomaterials for performance enhancement of proton exchange membrane fuel cells at low RH conditions

被引：38

作者：

Cindrella, L. ^{[1
,2
]}

Kannan, A. M. ^{[1
]}

Ahmad, R. ^{[3
]}

Thommes, M. ^{[3
]}

机构：

[1] Arizona State Univ, Engn Technol Dept, Fuel Cell Res Lab, Mesa, AZ 85212 USA

[2] Natl Inst Technol, Dept Chem, Tiruchirappalli 620015, Tamil Nadu, India

[3] Quantachrome Instruments, Boynton Beach, FL 33426 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 15期

关键词：

GDL; Nanomaterials; Membrane electrode assembly; Surface morphology; Contact angle; Porosity; PEM fuel cells; MICRO-POROUS LAYER; TRANSPORT; POROSITY; MANAGEMENT; CATHODE; PEMFC; GDL;

D O I：

10.1016/j.ijhydene.2009.05.086

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：

Prompted by our earlier study that fumed silica on gas diffusion layer (GDL) favored a performance improvement of the single fuel cell at lower RH conditions, the present study has been carried out with inorganic oxides in the nanoscale such as TiO2, Al2O3, commercially available mixed oxides, hydrophilic silica and aerosil silica. The structure of each of the oxide coating on the GDL surface has resulted in refinement with graded pore dimension as seen from the Hg porosimetry data. The fuel cell evaluation at various RH conditions (50-100%) revealed that the performance of all the inorganic oxides loaded GDL is very high compared to that of pristine GDL. The results confirm our earlier observation that inorganic oxides on GDL bring about structural refinement favorable for the transport of gases, and their water retaining capacity enable a high performance of the fuel cell even at low RH conditions. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：6377 / 6383

页数：7

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