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In situ diagnostic of two-phase flow phenomena in polymer electrolyte fuel cells by neutron imaging: Part B. Material variations

Zhang, Jianbo, Kramer, Denis, Shimoi, Ryoichi, Ono, Yoshitaka, Lehmann, Eberhard, Wokaun, Alexander, Shinohara, Kazuhiko and Schere, Günther G. (2006) In situ diagnostic of two-phase flow phenomena in polymer electrolyte fuel cells by neutron imaging: Part B. Material variations Electrochimica Acta, 51, (13), pp. 2715-2727. (doi:10.1016/j.electacta.2005.08.010).

Record type: Article


The formation of liquid water in operating polymer electrolyte fuel cells (PEFC) of industrial and laboratory size has been investigated by in situ neutron imaging. The influence of the materials chosen for the structural components of the cell on droplet formation and transport in flow fields and on liquid formation in gas diffusion layers has been studied. The changing of the cathodic gas diffusion layer material allowed the relationship between materials, liquid accumulation, and electrochemical performance to be examined. It has been shown that material choice has considerable bearing on the presence of liquid inside the porous structures and the electrochemical characteristics. A simplified quasi one-dimensional cell with an active area of 25 cm(2) was used for materials comparison, and the results were related to technically relevant operating conditions - where inhomogeneities have to be considered - by subsequent examination of cells with an active area of 100 cm(2).

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Published date: 5 March 2006
Keywords: neutron imaging, pefc, two-phase flow, fuel cell, flooding
Organisations: Engineering Mats & Surface Engineerg Gp


Local EPrints ID: 189831
ISSN: 0013-4686
PURE UUID: ec5e538b-70a9-4329-873b-086276b49029

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Date deposited: 13 Jun 2011 15:28
Last modified: 18 Jul 2017 11:39

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Author: Jianbo Zhang
Author: Denis Kramer
Author: Ryoichi Shimoi
Author: Yoshitaka Ono
Author: Eberhard Lehmann
Author: Alexander Wokaun
Author: Kazuhiko Shinohara
Author: Günther G. Schere

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