Vibrational spectroscopy and 2D correlation analysis as a probe of structure in ionomer membrane materials

Carol Korzeniewski, Chang Kyu Byun

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Infrared spectroscopy is being applied to gain new insights into structural properties of fuel cell membrane materials and to aid in determinations of membrane water content. In the area of structure elucidation, two-dimensional (2D) correlation methods were adapted in the analysis of spectral data sets collected during water uptake into fluorinated ionomer materials. Synchronous 2D correlation plots assisted in the resolution of spectral regions complicated by overlapping bands and indicate distinctions in transformations centered within hydrophilic relative to more hydrophobic ionomer domains. Asynchronous 2D correlation plots reveal relationships in the dynamics of side chain and backbone motions that accompany changes in membrane hydration state.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 14
EditorsK. Shinohara, S. R. Narayanan, K. Swider-Lyons, A. Weber, C. Coutanceau, R. Mantz, H. A. Gasteiger, D. Jones, M. Edmundson, S. Mitsushima, V. Ramani, Y. Meas, T. Fuller, H. Uchida, F. N. Buchi, K. A. Perry, T. J. Schmidt, J. M. Fenton, P. Strasser
PublisherElectrochemical Society Inc.
Pages719-727
Number of pages9
Edition3
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2014
Event14th Polymer Electrolyte Fuel Cell Symposium, PEFC 2014 - 226th ECS Meeting - Cancun, Mexico
Duration: Oct 5 2014Oct 9 2014

Publication series

NameECS Transactions
Number3
Volume64
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

Conference14th Polymer Electrolyte Fuel Cell Symposium, PEFC 2014 - 226th ECS Meeting
CountryMexico
CityCancun
Period10/5/1410/9/14

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