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- W3033109969 abstract "Abstract A new structure of sulfonated-partially fluorinated random polysulfone based on a highly fluorinated monomer -decafluorobiphenyl- was developed as the fuel cell membrane. Decafluorobiphenyl was randomly distributed in the structure by applying non-stoichiometric amounts of reactants via a three-step polymerization reaction under mild condition. The random copolymers with sulfonation degrees of 30–60% revealed suitable water uptake and dimensional change with good mechanical stability despite an increased degree of sulfonation. Moreover, higher proton conductivity (71–250 mS/cm at 80 °C and 100% RH) compared to the routine random copolymers (120 mS/cm) was obtained. The optimum sample with 60% sulfonation showed a comparable power density of about 319.5 mW/cm2 with the reported random type polymer. The high current density of 1309 mA/cm2 was remarkable. Notably, with 60% sulfonation, only 4.85% voltage reduction was observed during 100 h OCV hold test under an accelerated ageing condition in fuel cell media." @default.
- W3033109969 created "2020-06-12" @default.
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- W3033109969 date "2020-10-01" @default.
- W3033109969 modified "2023-10-18" @default.
- W3033109969 title "Durable sulfonated partially fluorinated polysulfones as membrane for PEM fuel cell" @default.
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- W3033109969 doi "https://doi.org/10.1016/j.renene.2020.05.124" @default.
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