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• W2041911954 abstract "The crosslinked sulfonated poly (ether ether ketone)/2-acrylamido-2-methyl-1-propanesulfonic acid (SPEEK/AMPS) blend membranres were prepared and evaluated as proton exchange membranes for direct methanol fuel cell (DMFC) applications. The structure and morphology of SPEEK/AMPS membranes were characterized by FTIR and SEM, respectively. The effects of crosslinking and AMPS content on the performance of membranes were studied and discussed in detail. The proton conductivity and methanol diffusion coefficient of SPEEK/AMPS membranes increased gradually with the increase of AMPS content. Most SPEEK/AMPS membranes exhibited higher proton conductivity than Nafion® 117 (0.05 S cm−1 at 25 °C). However, all the membranes possessed much lower methanol diffusion coefficient compared with Nafion® 117 (2.38 × 10−6 cm2 s−1) under the same measuring conditions. Even the methanol diffusion coefficient (8.89 × 10−7 cm2 s−1) of SPEEK/AMPS 30 sample with the highest proton conductivity (0.084 S cm−1 at 25 °C) was only about one third of that of Nafion® 117. The selectivity of all the SPEEK/AMPS membranes was much higher in comparison with Nafion® 117 (2.8 × 104 S s cm−3). In addition, the SPEEK/AMPS membranes possessed relatively good thermal and hydrolytic stability. These results suggested that the SPEEK/AMPS membranes were particularly promising to be used as proton exchange membranes in DMFCs, and the high proton conductivity, low methanol diffusion coefficient and high selectivity were their primary advantages for DMFC applications." @default.
• W2041911954 created "2016-06-24" @default.
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• W2041911954 date "2007-05-01" @default.
• W2041911954 modified "2023-10-08" @default.
• W2041911954 title "Crosslinked SPEEK/AMPS blend membranes with high proton conductivity and low methanol diffusion coefficient for DMFC applications" @default.
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• W2041911954 doi "https://doi.org/10.1016/j.jpowsour.2007.03.028" @default.
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