Spatially resolved characterization of PEFCs using simultaneously neutron radiography and locally resolved impedance spectroscopy
Spatially resolved characterization of PEFCs using simultaneously neutron radiography and locally resolved impedance spectroscopy
A method for performing neutron radiography and locally resolved impedance spectroscopy simultaneously in Situ in all operating polymer electrolyte fuel cell (PEFC) is presented. The new method provides Concurrently spatially resolved information about the local cell performance, the locally limiting processes, and the liquid water distribution. Information about the impact of water oil cell performance and limiting processes call be gained in situ oil a local scale in all operating PEFC. The method was applied to a PEFC operated oil pure H-2/O-2 in co-flow mode under low humidity operating conditions. The results show that in co-flow mode strong flooding and severe drying can Occur at the very same time in different sections of a PEFC.
impedance spectroscopy, neutron radiography, segmented cell, pefc, water management, flooding
1393-1397
Schneider, I.A.
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Kramer, D.
1faae37a-fab7-4edd-99ee-ae4c30d3cde4
Wokaun, A.
10ff9356-3427-4d82-bd9f-27997460f33d
Scherer, G.G.
0d7f3b57-2ca3-4846-85a2-d0e787540664
2 November 2005
Schneider, I.A.
b54d73d4-a7b1-43ec-a72f-6d03d77575cd
Kramer, D.
1faae37a-fab7-4edd-99ee-ae4c30d3cde4
Wokaun, A.
10ff9356-3427-4d82-bd9f-27997460f33d
Scherer, G.G.
0d7f3b57-2ca3-4846-85a2-d0e787540664
Schneider, I.A., Kramer, D., Wokaun, A. and Scherer, G.G.
(2005)
Spatially resolved characterization of PEFCs using simultaneously neutron radiography and locally resolved impedance spectroscopy.
Electrochemistry Communications, 7 (12), .
(doi:10.1016/j.elecom.2005.09.017).
Abstract
A method for performing neutron radiography and locally resolved impedance spectroscopy simultaneously in Situ in all operating polymer electrolyte fuel cell (PEFC) is presented. The new method provides Concurrently spatially resolved information about the local cell performance, the locally limiting processes, and the liquid water distribution. Information about the impact of water oil cell performance and limiting processes call be gained in situ oil a local scale in all operating PEFC. The method was applied to a PEFC operated oil pure H-2/O-2 in co-flow mode under low humidity operating conditions. The results show that in co-flow mode strong flooding and severe drying can Occur at the very same time in different sections of a PEFC.
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Published date: 2 November 2005
Keywords:
impedance spectroscopy, neutron radiography, segmented cell, pefc, water management, flooding
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 189833
URI: http://eprints.soton.ac.uk/id/eprint/189833
ISSN: 1388-2481
PURE UUID: a0e2e80b-6c7a-474b-8857-cfba18cac080
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Date deposited: 07 Jun 2011 10:25
Last modified: 14 Mar 2024 03:36
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Contributors
Author:
I.A. Schneider
Author:
A. Wokaun
Author:
G.G. Scherer
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