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- W2193960900 abstract "Abstract High temperature proton exchange membranes were synthesized via electron beam treatment of commercial poly(ethylene-alt-tetraflouroethylene) (ETFE) films and subsequent graft radical copolymerizations with 2-hydroxyethyl methacrylate (HEMA) and 2-hydroxyethyl acrylate (HEA). The maximum degree of grafting achieved was 193%. Both grafted monomers are hydrophilic and lead to high membrane affinity to phosphoric acid. Doping with phosphoric acid resulted in a maximum doping level of 310%. The grafted membranes combine stable ETFE backbone polymer with hydrophilic side chains. As indicated by stress–strain curves the graft copolymer membranes show good mechanical stability. In addition, the polymer–acid-composites are thermally stable up to around 210 °C. The polymer–acid-composite materials were tested in H 2 /O 2 fuel cells at 120 °C. Power densities of up to 108 mW cm ‒2 were obtained at a current density of 200 mA cm ‒2 . It is shown that the alternate concept of polymer–acid composites without any basic units is also suitable for the application in high temperature fuel cells." @default.
- W2193960900 created "2016-06-24" @default.
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- W2193960900 date "2015-12-01" @default.
- W2193960900 modified "2023-10-18" @default.
- W2193960900 title "Novel concept of polymer electrolyte membranes for high-temperature fuel cells based on ETFE grafted with neutral acrylic monomers" @default.
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- W2193960900 doi "https://doi.org/10.1016/j.memsci.2015.07.056" @default.
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