张琪,赵娟,敖勇,徐荣,潘丽燕,钟璟

• 1:常州大学 石油化工学院，江苏省绿色催化材料与技术重点实验室，江苏 常州 213164

摘要(Abstract)：

利用填充法将SPBI-ZrP电解质填充于ePTFE多孔基底中，制备SPBI-ZrP/ePTFE质子交换复合膜。分别采用FESEM、FT-IR、干湿称重法、拉伸测试和交流阻抗法对膜的微观结构和性能表征。实验结果表明，SPBI-ZrP电解质已成功填充于ePTFE基底中，膜表面光滑。SPBI-ZrP-2.5膜在厚度方向的溶胀度是SPBI-ZrP-2.5/ePTFE膜的7.3倍，归因于ePTFE基底能够有效地抑制膜溶胀，提高膜尺寸稳定性；由于ePTFE基底的增强效应，SPBI-ZrP-2.5/ePTFE膜的拉伸强度比SPBI-ZrP-2.5膜提高19.86%； SPBI-ZrP-2.5/ePTFE膜的质子电导率在160和80℃、相对湿度100%下分别达到0.222和0.071 S·cm^-1，而Nafion膜（EW=1100）在80℃的质子电导率为0.077 S·cm^-1，在温度>100℃时质子电导率急剧下降，说明SPBI-ZrP-2.5/ePTFE膜在高温下具有良好的质子传导性能，能应用于高温质子交换膜燃料电池中。

关键词(KeyWords)： 聚四氟乙烯;磺化聚苯并咪唑;α-磷酸锆;高温;质子电导率

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（21306012）；江苏省普通高校研究生科研创新计划（SJLX15_0534）；江苏高校品牌专业建设工程资助项目（ppzy2015B145）。

作者(Author): 张琪,赵娟,敖勇,徐荣,潘丽燕,钟璟

DOI: 10.3969/j.issn.1003-9015.2017.04.027

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