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Super proton conductive high-purity nafion nanofibers

机译:超质子导电高纯度纳菲纳米纤维

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摘要

In this paper, we report the high proton conductivity of a single high-purity Nafion nanofiber (1.5 S/cm), which is an order of magnitude higher than the bulk Nafion film (~0.1 S/cm). We also observe a nanosize effect, where proton conductivity increases sharply with decreasing fiber diameter. X-ray scattering provides a rationale for these findings, where an oriented ionic morphology was observed in the nanofiber in contrast to the isotropic morphology in the bulk film. This work also demonstrates the successful fabrication of high-purity Nafion nanofibers (~99.9 wt %) via electrospinning and higher humidity sensitivity for nanofibers compared to the bulk. These results should have a significant impact on fuel cells and sensors.
机译:在本文中,我们报道了单根高纯度的Nafion纳米纤维(1.5 S / cm)的高质子电导率,这比块状Nafion膜(〜0.1 S / cm)高了一个数量级。我们还观察到了纳米效应,质子传导率随着纤维直径的减小而急剧增加。 X射线散射为这些发现提供了理论依据,其中在纳米纤维中观察到了定向的离子形态,而在块状薄膜中则观察到了各向同性形态。这项工作还证明了通过电纺成功制造出高纯度的Nafion纳米纤维(〜99.9 wt%),并且与散装纤维相比,纳米纤维具有更高的湿度敏感性。这些结果将对燃料电池和传感器产生重大影响。

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