The Ionic Resistance of a Nanostructured Membrane Electrode Assembly under Nonequilibrium Conditions
Journal Article
·
· Technical Physics Letters
- Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)
The ionic resistance of the membrane electrode assembly (MEA) of O{sub 2}/H{sub 2} 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.
- OSTI ID:
- 22927850
- Journal Information:
- Technical Physics Letters, Journal Name: Technical Physics Letters Journal Issue: 12 Vol. 44; ISSN 1063-7850
- Country of Publication:
- United States
- Language:
- English
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