Nano-cluster-enhanced High-performance Perfluoro-polymer Electrets for Micro Power Generation
Nano-cluster-enhanced High-performance Perfluoro-polymer Electrets for Micro Power Generation
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用于微发电的纳米团簇增强高性能全氟聚合物驻极体
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通讯作者：
Yuji Suzuki
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作者：
K. Kashiwagi;K. Okano;Y. Morizawa;Yuji Suzuki
高性能驻极体材料的开发是实现高功率振动驱动能量采集器的必要条件。我们以前发现，全氟聚合物CYTOP显示出高的表面电荷密度，这是大于任何其他含氟材料，如聚四氟乙烯AF。在这项研究中，我们已经发现，在全氟聚合物薄膜中形成的纳米簇是有效的，以改善驻极体的性能。通过在CYTOP中添加氨基硅烷衍生物，表面电荷密度和陷阱电荷的热稳定性显著提高。使用小角X射线散射（SAXS）分析和轻敲模式AFM分析，我们还揭示了存在的CYTOP膜，这应该作为电荷陷阱优良的驻极体性能的纳米团簇。此外，我们已经证明了一个创纪录的高表面电荷密度为2 mC/m的聚合物驻极体，以及更高的热稳定性的电荷。
Development of high-performance electret materials is required to achieve high-power vibration-driven energy harvesters. We previously found that perfluorinated polymer CYTOP shows high surface charge density, which is larger than that of any other fluorine containing materials such as Teflon AF. In this study, we have found that formation of nano-clusters in the perfluorinated polymer films is effective to improve the properties of electrets. By adding aminosilane derivatives into CYTOP, surface charge density and thermal stability of trapped charges are significantly enhanced. Using small-angle X-ray scattering (SAXS) analysis and tapping mode AFM analysis, we have also revealed existence of nano clusters in the CYTOP film, which should work as charge traps for excellent electrets properties. Furthermore, we have demonstrated a record-high surface charge density of 2 mC/m as polymer electrets as well as higher thermal stability of charges.