Improved Performance of Polymer Electrolyte Membrane Fuel Cells with Modified Microporous Layer Structures

被引：22

作者：

Alrwashdeh, Saad S. ^{[1
,2
,3
]}

Manke, Ingo ^{[1
]}

Markoetter, Henning ^{[1
]}

Haussmann, Jan ^{[4
]}

Arlt, Tobias ^{[1
]}

Hilger, Andre ^{[1
]}

Al-Falahat, A. M. ^{[1
,2
,3
]}

Klages, Merle ^{[4
]}

Scholta, Joachim ^{[4
]}

Banhart, John ^{[1
,3
]}

机构：

[1] Helmholtz Ctr Berlin Mat & Energy, Hahn Meitner Pl 1, D-14109 Berlin, Germany

[2] Mutah Univ, Dept Mech Engn, Fac Engn, POB 7, Al Karak 61710, Jordan

[3] Tech Univ Berlin, Inst Mat Sci & Technol, D-10623 Berlin, Germany

[4] Zentrum Sonnenenergie & Wasserstoff Forsch Baden, Helmholtzstr 8, D-89081 Ulm, Germany

来源：

ENERGY TECHNOLOGY | 2017年 / 5卷 / 09期

关键词：

cell performance; fuel cells; microporous materials; synchroton X-ray tomography; water distribution; X-RAY RADIOGRAPHY; LIQUID WATER TRANSPORT; GAS-DIFFUSION LAYERS; RESOLUTION NEUTRON-RADIOGRAPHY; FIBER-BASED MATERIALS; H-1-NMR MICROSCOPY; TOMOGRAPHIC MICROSCOPY; MODEL DEVELOPMENT; IMAGING TECHNIQUE; POROUS LAYERS;

D O I：

10.1002/ente.201700005

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A possible method to improve membrane humidity conditions in polymer electrolyte membrane fuel cells and, therefore, the cell performance is the optimization of microporous layer (MPL) structures. In this work, water transport in modified MPL materials in polymer electrolyte membrane fuel cells (PEMFCs) was investigated by inoperando synchrotron X-ray tomography. Three different types of MPLs are compared: A reference standard MPL material, an MPL material with a special wavy structure, and an MPL with randomly distributed holes. We found a strong impact of the modified MPL structure on the water distribution at operating temperatures of 40 and 55 degrees C and an increase of cell performance up to 14% compared to the reference cell. We assume the water distribution at the membrane to be responsible for the performance increase and provide a detailed discussion.

引用

页码：1612 / 1618

页数：7

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