合成了表面接枝磺酸基团的改性多壁碳纳米管(S-MWNTs),通过溶液共混法制备了用于直接甲醇燃料电池的磺化聚醚醚酮(SPEEK)/S-MWNTs复合膜.扫描电镜显示,S-MWNTs在掺杂量比较少时,能够在SPEEK基体中均匀分散;热重分析证明,复合膜具有优异的热稳定性.当掺杂量为1o时,复合膜的机械性能,尺寸稳定性及电导率均提高,这有效解决了纯SPEEK膜中质子电导率与机械性能、尺寸稳定性等相矛盾的问题.
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