Effect of Methylimidazole Groups on the Performance of Poly(phenylene oxide) Based Membrane for High-Temperature Proton Exchange Membrane Fuel Cells
作者： Wei Wu , Gongwen Zou , Xuying Fang , Chuanbo Cong , Qiong Zhou
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摘要: A series of phosphoric acid (PA) doped imidazolium poly(phenylene oxide) (PPO) membranes with different methylimidazole (MeIM) contents were prepared to tailor the performance solid-state membranes. First, brominated (BPPO) was synthesized by methyl bromination. Then BPPO reacted MeIM and PA. The process confirmed Fourier transform infrared spectroscopy 13C NMR. PA absorption ability (PPO-MeIM) changed increasing content. PPO-MeIM membrane showed best proton conductivity 6.79 × 10–2 S cm–1 at 0% relative humidity, highest mechanical strength 4.8 MPa molar ratio 4:10 (M-3#) 30 °C, high power density 260 mW cm–2 without additional humidification 160 °C. Results indicated that incorporation an appropriate amount groups can achieve conduction properties.
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