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- W1986243583 abstract "Poly(tetrafluoroethylene) PTFE/PBI composite membranes doped with H3PO4 were fabricated to improve the performance of high temperature polymer electrolyte membrane fuel cells (HT-PEMFC). The composite membranes were fabricated by immobilising polybenzimidazole (PBI) solution into a hydrophobic porous PTFE membrane. The mechanical strength of the membrane was good exhibiting a maximum load of 35.19 MPa. After doping with the phosphoric acid, the composite membrane had a larger proton conductivity than that of PBI doped with phosphoric acid. The PTFE/PBI membrane conductivity was greater than 0.3 S cm−1 at a relative humidity 8.4% and temperature of 180 °C with a 300% H3PO4 doping level. Use of the membrane in a fuel cell with oxygen, at 1 bar overpressure gave a peak power density of 1.2 W cm−2 at cell voltages >0.4 V and current densities of 3.0 A cm−2. The PTFE/PBI/H3PO4 composite membrane did not exhibit significant degradation after 50 h of intermittent operation at 150 °C. These results indicate that the composite membrane is a promising material for vehicles driven by high temperature PEMFCs." @default.
- W1986243583 created "2016-06-24" @default.
- W1986243583 creator A5064591982 @default.
- W1986243583 creator A5070296123 @default.
- W1986243583 date "2010-02-01" @default.
- W1986243583 modified "2023-10-14" @default.
- W1986243583 title "A polymer electrolyte membrane for high temperature fuel cells to fit vehicle applications" @default.
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- W1986243583 doi "https://doi.org/10.1016/j.electacta.2009.11.044" @default.
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