Study on functionally gradient proton exchange membrane fabricated by EB irradiation with heterogeneous energy deposition

Hajime Fujita, Fumiya Shiraki, Taeko Yoshikawa, Akihiro Oshima, Masakazu Washio

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The revolutionary functionally gradient proton exchange membranes were fabricated by EB irradiation with heterogeneous energy deposition. These heterogeneous energy deposition profiles (Depth-Dose profiles) were simulated by Monte Carlo simulation code EGS5. In the process of EB-grafting method of styrene onto base fluorinated polymer, the energy depositions selected from the Depth-Dose profiles were used. The grafted membranes were sulfonated with chlorosulfonic acid in carbon tetrachloride. The DOGs in the direction of thickness showed that EB Depth-Dose profiles corresponded to the EB grafting reaction. The functionally gradient proton exchange membranes had a water uptake gradient in the direction of depth, and hence could be a promising solution to manage water behavior in Membrane Electrode Assembly (MEA) of Polymer Electrolyte Fuel Cell (PEFC).

Original languageEnglish
Pages (from-to)387-392
Number of pages6
JournalJournal of Photopolymer Science and Technology
Volume23
Issue number3
DOIs
Publication statusPublished - 2010 Oct 1

Keywords

  • EB
  • EB-grafting
  • Functionally gradient
  • PEFC
  • ULEB

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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