Test System For Through-Plane Conductivity Measurements of Hydrogen Proton Exchange Membranes

We present a simple test system for membrane through-plane conductivity measurements. In this design the catalyst layer is detached from the membrane and added to the gas diffusion electrode. Moreover, the humidifying gas is recycled after exiting the test cell making it more cost effective. To prov...

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Bibliographic Details
Published in:International journal of electrochemical science 2015-08, Vol.10 (8), p.6465-6474
Main Authors: Al-Madani, Ghada, Kailani, Mohammad H., Al-Hussein, Mahmoud
Format: Article
Language:English
Subjects:
bare proton exchange membrane
EIS
fuel cell
Ionic conductivity
Nyquist plot
through-plane
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Summary:We present a simple test system for membrane through-plane conductivity measurements. In this design the catalyst layer is detached from the membrane and added to the gas diffusion electrode. Moreover, the humidifying gas is recycled after exiting the test cell making it more cost effective. To prove the test system applicability, electrochemical impedance spectroscopy (EIS) is used to determine the ionic conductivity of a model Nafion membrane at two different temperatures. Nyquist plots are used to analyze the impedance spectra. Equivalent circuit modeling of the EIS data is used to extract the Ohmic membrane resistance, which is in turn used to calculate the membrane ionic conductivity using self-developed fitting routines.
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)06733-0