Title: Spatially resolved characterization of PEFCs using simultaneously neutron radiography and locally resolved impedance spectroscopy
Authors: Schneider, Ingo A.
Kramer, Denis 
Wokaun, Alexander
Scherer, Günther
Language: en
Keywords: impedance spectroscopy;neutron radiography;segmented cell;pefc;water management;flooding
Subject (DDC): DDC::500 Naturwissenschaften und Mathematik::540 Chemie::541 Physikalische Chemie
Issue Date: 2-Nov-2005
Publisher: Elsevier Science
Document Type: Article
Journal / Series / Working Paper (HSU): Electrochemistry Communications 
Volume: 7
Issue: 12
Page Start: 1393
Page End: 1397
Publisher Place: Amsterdam [u.a.]
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.
Organization Units (connected with the publication): Paul Scherrer Institut, Department General Energy, Electrochemistry Laboratory, CH-5232 Villigen PSI, Switzerland
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2005.09.017
Appears in Collections:Publications of the HSU Researchers (before HSU)

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