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- W2481097462 abstract "Proton conducting membranes for polymer electrolyte fuel cells were prepared by radiation grafting of styrene/divinylbenzene onto Telon-FEP films and subsequent sulfonation. Films with degrees of grafting up to 50% were obtained and characterized FTIR-ATR with respect to their homogeneity, by DSC and TGA with respect to their thermal properties. After sulfonation thermal stability was again probed by TGA in combination with one-line FTIR and MS. Water uptake and protonic resistivity were determined after pretreatment in boiling water. The decrease in resistivity with increasing degree of grafting is mainly due to an increasing proton mobility. The membranes were tested in H{sub 2}/O{sub 2} fuel cells (ambient pressure, 60 to 90{degrees}C) with respect to their short- and long-term (up to 1000 h) polarization performance. The results of the ex and in situ characterization will be presented and discussed." @default.
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- W2481097462 date "1993-12-31" @default.
- W2481097462 modified "2023-09-23" @default.
- W2481097462 title "Radiation grafted membranes for polymer electrolyte fuel cells, ex situ and in situ characterization" @default.
- W2481097462 hasPublicationYear "1993" @default.
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