Abstract
The ionic resistance of the membrane electrode assembly (MEA) of O2/H2 fuel cells is studied in situ in a broad range of MEA compositions by using electrochemical impedance spectroscopy and polarization measurements. The MEAs are composed of platinum on carbon, carbon nanotubes, and Nafion, a proton- conducting polymer. We investigate atypical growth of the MEA resistance with the increasing Nafion content and spatial nonuniformity in the MEA ionic resistivity. A mechanism underlying this phenomenon is proposed.
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Original Russian Text © A.A. Nechitailov, N.V. Glebova, A.A. Tomasov, A.O. Krasnova, N.K. Zelenina, 2018, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2018, Vol. 44, No. 23, pp. 120–128.
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Nechitailov, A.A., Glebova, N.V., Tomasov, A.A. et al. The Ionic Resistance of a Nanostructured Membrane Electrode Assembly under Nonequilibrium Conditions. Tech. Phys. Lett. 44, 1104–1107 (2018). https://doi.org/10.1134/S1063785018120325
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DOI: https://doi.org/10.1134/S1063785018120325