Implications of polymer electrolyte fuel cell exposure to synchrotron radiation on gas diffusion layer water distribution

被引：42

作者：

Eller, Jens ^{[1
]}

Roth, Joerg ^{[1
]}

Marone, Federica ^{[2
]}

Stampanoni, Marco ^{[2
,3
]}

Wokaun, Alexander ^{[1
]}

Buechi, Felix N. ^{[1
]}

机构：

[1] Paul Scherrer Inst, Electrochem Lab, Villigen, Switzerland

[2] Paul Scherrer Inst, Swiss Light Source, Villigen, Switzerland

[3] Univ & ETH Zurich, Inst Biomed Engn, Zurich, Switzerland

来源：

JOURNAL OF POWER SOURCES | 2014年 / 245卷

关键词：

Polymer electrolyte fuel cell (PEFC); Gas diffusion layer; Water saturation; X-ray tomographic microscopy; Synchrotron imaging; Measurement bias; RAY TOMOGRAPHIC MICROSCOPY; LIQUID WATER; DECOMPOSITION PRODUCTS; DEGRADATION; PERFORMANCE; MEMBRANE; NAFION; PEFC;

D O I：

10.1016/j.jpowsour.2013.07.025

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：

Synchrotron radiation (SR) based imaging of polymer electrolyte fuel cells (PEFC), both radiography and tomography, is an attractive tool for the visualization of water in the gas diffusion layer as it provides temporal and spatial resolutions one order of magnitude superior to neutron imaging. Here we report on the degradation of cell performance and changes in GDL water saturation after SR irradiation of about 43% of a cell's active area. Fast X-ray tomographic microscopy (XTM) scans of 11 s duration are used to compare the GDL saturation before and after a 5 min irradiation period of the imaged section. The cell voltage and the water saturation decreased clearly during and after the exposure. Estimates of the current density of the SR exposed and non exposed cell domains underline the effect of irradiation. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：796 / 800

页数：5

共 16 条

[1] Determination of Liquid Water Distribution in Porous Transport Layers [J].

Buechi, Felix N. ;

Flueckiger, Reto ;

Tehlar, Denis ;

Marone, Federica ;

Stampanoni, Marco .

PROTON EXCHANGE MEMBRANE FUEL CELLS 8, PTS 1 AND 2, 2008, 16 (02) :587-+

[2] Towards ultra-fast X-ray Tomographic Microscopy of Liquid Water in PEFC [J].

Eller, J. ;

Roth, J. ;

Marone, F. ;

Stampanoni, M. ;

Wokaun, A. ;

Buechi, F. N. .

POLYMER ELECTROLYTE FUEL CELLS 11, 2011, 41 (01) :387-394

[3] Progress in In Situ X-Ray Tomographic Microscopy of Liquid Water in Gas Diffusion Layers of PEFC [J].

Eller, Jens ;

Rosen, Tomas ;

Marone, Federica ;

Stampanoni, Marco ;

Wokaun, Alexander ;

Buechi, Felix N. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2011, 158 (08) :B963-B970

[4] Investigation of liquid water in gas diffusion layers of polymer electrolyte fuel cells using X-ray tomographic microscopy [J].

Flueckiger, Reto ;

Marone, Federica ;

Stampanoni, Marco ;

Wokaun, Alexander ;

Buechi, Felix N. .

ELECTROCHIMICA ACTA, 2011, 56 (05) :2254-2262

[5]

HARTNIG C, WOODHEAD PUBLISHING, V2, P462

[6] Influence of decomposition products from perfluorosulfonic acid membrane on fuel cell performance [J].

Kabasawa, Akihiro ;

Uchida, Hiroyuki ;

Watanabe, Masahiro .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2008, 11 (10) :B190-B192

[7] Effects of the decomposition products of sulfonated polyimide and Nafion membranes on the degradation and recovery of electrode performance in PEFCs [J].

Kabasawa, Akihiro ;

Saito, Jurnpei ;

Miyatake, Kenji ;

Uchida, Hiroyuki ;

Watanabe, Masahiro .

ELECTROCHIMICA ACTA, 2009, 54 (10) :2754-2760

[8] Synchrotron X-ray tomography for investigations of water distribution in polymer electrolyte membrane fuel cells [J].

Krueger, Ph ;

Markoetter, H. ;

Haussmann, J. ;

Klages, M. ;

Arlt, T. ;

Banhart, J. ;

Hartnig, Ch ;

Manke, I. ;

Scholta, J. .

JOURNAL OF POWER SOURCES, 2011, 196 (12) :5250-5255

[9] Characteristic lengths affecting evaporative drying of porous media [J].

Lehmann, Peter ;

Assouline, Shmuel ;

Or, Dani .

PHYSICAL REVIEW E, 2008, 77 (05)

[10] Investigation of 3D water transport paths in gas diffusion layers by combined in-situ synchrotron X-ray radiography and tomography [J].

Markoetter, H. ;

Manke, I. ;

Krueger, Ph. ;

Arlt, T. ;

Haussmann, J. ;

Klages, M. ;

Riesemeier, H. ;

Hartnig, Ch. ;

Scholta, J. ;

Banhart, J. .

ELECTROCHEMISTRY COMMUNICATIONS, 2011, 13 (09) :1001-1004

← 1 2 →