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首页> 外文期刊>RSC Advances >Preparation and characterization of continuous carbon nanofiber-supported SPEEK composite membranes for fuel cell application
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Preparation and characterization of continuous carbon nanofiber-supported SPEEK composite membranes for fuel cell application

机译：连续碳纳米纤维支撑的SPEEK复合膜在燃料电池中的制备与表征

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An easy spinning-based strategy was developed to fabricate polyacrylonitrile nanofibers as a precursor to obtaining continuous carbon nanofiber (CCNF) mats after carbonization. The composite membrane was then prepared by incorporating CCNFs into sulfonated poly(ether ether ketone) (SPEEK) for application in proton-exchange membrane fuel cells. Scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, and tensile strength tests were used to characterize plain SPEEK and composite membranes. All dense composite membranes were found to have excellent water swelling, high mechanical performance, good proton conductivity, and low methanol permeability. The composite membrane with 0.51 wt% CCNFs displayed a proton conductivity of 0.041 S cm(-1) at room temperature and was fully hydrated. Moreover, the relative selectivity of the hybrid membrane with 2.52 wt% CCNFs was 1.5 times higher than that of a pure SPEEK membrane. These results showed that the CCNF-supported SPEEK membranes were promising polyelectrolyte membranes for fuel cell applications.
机译：开发了一种基于易纺丝的策略，以制造聚丙烯腈纳米纤维作为前驱体，以在碳化后获得连续的碳纳米纤维（CCNF）毡。然后通过将CCNF掺入磺化聚醚醚酮（SPEEK）中制备质子交换膜燃料电池，从而制备复合膜。扫描电子显微镜，X射线衍射，热重分析和拉伸强度测试被用来表征平面SPEEK和复合膜。发现所有致密的复合膜均具有优异的水溶胀性，高机械性能，良好的质子传导性和低的甲醇渗透性。具有0.51 wt％CCNFs的复合膜在室温下显示0.041 S cm（-1）的质子电导率并完全水合。而且，具有2.52wt％CCNF的杂化膜的相对选择性是纯SPEEK膜的相对选择性的1.5倍。这些结果表明，CCNF支撑的SPEEK膜是有希望用于燃料电池应用的聚电解质膜。

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