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首页> 外文期刊>ACS applied materials & interfaces >Micro-Pseudocapacitors with Electroactive Polymer Electrodes: Toward AC-Line Filtering Applications
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Micro-Pseudocapacitors with Electroactive Polymer Electrodes: Toward AC-Line Filtering Applications

机译:带有电活性聚合物电极的微型伪电容器:面向交流线滤波应用

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摘要

In this study, we investigate the frequency response of micro-pseudocapacitors based on conducting polymer electrodes such as poly(3,4-ethylenedioxythiophene) (PEDOT), polypyrrole, and polyaniline. It is shown that by proper choice of polymeric material and device structure, miniaturized micro-pseudocapacitors can match the frequency response of commercial bulky electrolytic capacitors. Specifically, we show that PEDOT-based micro-pseudocapacitors exhibit phase angle of -80.5 degrees at 120 Hz, which is comparable to commercial bulky electrolytic capacitors, but with an order of magnitude higher capacitance density (3 FV/cm(3)). The tradeoff between the areal capacitance (C-A) and frequency response in the two-dimensional architecture (C-A = 0.15 mF/cm(2), phase angle of -80.5 degrees at 120 Hz) is improved by designing three-dimensional thin-film architecture (C-A = 1.3 mF/cm(2), phase angle of -60 degrees at 120 Hz). Our work demonstrates that fast frequency response can be achieved using electroactive polymer electrodes.
机译:在这项研究中,我们研究了基于导电聚合物电极(例如聚(3,4-乙撑二氧噻吩)(PEDOT),聚吡咯和聚苯胺)的微型假电容的频率响应。结果表明,由聚合物材料和器件结构的合适的选择,小型化微赝可以匹配商业笨重电解电容器的频率响应。具体来说,我们显示基于PEDOT的微型假电容在120 Hz时表现出-80.5度的相角,与商业化的大型电解电容器相当,但电容密度更高(3 FV / cm(3))。通过设计三维薄膜体系结构,可以改善二维体系结构(CA = 0.15 mF / cm(2),相角为120Hz时为-80.5度)中的面积电容(CA)和频率响应之间的权衡(CA = 1.3 mF / cm(2),在120 Hz时的相位角为-60度)。我们的工作表明,使用电活性聚合物电极可以实现快速的频率响应。

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