Understanding the water retention of composite proton exchange membranes based on surface chemistry of inorganic fillers

Mark V. Fedkin, Elena Chalkova, David J. Wesolowski, Serguei N. Lvov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Use of metal oxide additives is considered a viable option for improving thermal, chemical, and transport properties of the proton exchange membranes for fuel cells operating at elevated temperatures (>100 °C) and reduced relative humidity (<70%). The purpose of this paper is to review the characteristics of some specific oxide materials for fuel cell applications based on available experimental surface chemistry data and surface modeling. Several commonly used oxides were differentiated based on their thermodynamic solubility, surface charge, and states of the surface water. Surface charge is discussed as a primary factor controlling water retention by the composite membranes in dehydrating environments.

Original languageEnglish (US)
Title of host publicationECS Transactions - Interfacial Electrochemistry and Chemistry in High Temperature Media
Pages189-198
Number of pages10
Edition27
DOIs
StatePublished - Dec 22 2008
EventInterfacial Electrochemistry and Chemistry in High Temperature Media - 212th ECS Meeting - Washington, DC, United States
Duration: Oct 7 2007Oct 12 2007

Publication series

NameECS Transactions
Number27
Volume11
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherInterfacial Electrochemistry and Chemistry in High Temperature Media - 212th ECS Meeting
CountryUnited States
CityWashington, DC
Period10/7/0710/12/07

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Fedkin, M. V., Chalkova, E., Wesolowski, D. J., & Lvov, S. N. (2008). Understanding the water retention of composite proton exchange membranes based on surface chemistry of inorganic fillers. In ECS Transactions - Interfacial Electrochemistry and Chemistry in High Temperature Media (27 ed., pp. 189-198). (ECS Transactions; Vol. 11, No. 27). https://doi.org/10.1149/1.2939088