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首页> 外文期刊>Electrochimica Acta >Two-step method for synthesizing polyaniline with bimodal nanostructures for high performance supercapacitors
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Two-step method for synthesizing polyaniline with bimodal nanostructures for high performance supercapacitors

机译:用于合成聚苯胺的二胺纳米结构,高性能超级电容器合成聚苯胺的方法

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摘要

Here we report a novel and simple two-step method to fabricate polyaniline, which consists of two successive low-temperature (?20?°C, frozen) and near-room temperature (30?°C) periods. Melting of the frozen part and solute migration mainly drives polymerization. It is proved that the two-step method is an efficient way to fabricate polyaniline with a bimodal morphology composed of coral-like structure with thorns and interconnected nanowire structure. The mechanism of formation of such bimodal morphology is discussed in detail. Optimized polyaniline prepared by this method showed an excellent electrochemical energy storage performance, with a specific capacitance of 689?F?g-1?at 1?A?g?1and a good retention rate of 89% (613?F?g?1) at 10?A?g?1. Symmetric cells based on it show an energy density of 12.6?Wh kg?1at a power density of 188.3?W?kg?1. In summary, this work provides a new way to fabricate polyaniline for supercapacitor applications.
机译:在这里,我们报告了一种新颖而简单的两步方法来制造聚苯胺,其包括两个连续的低温(?20?℃,冷冻)和接近室温(30℃)的时间。 冷冻部件的熔化和溶质迁移主要是驱动聚合。 证明两步方法是制造多酰胺的有效方式,其具有由具有刺和互连的纳米线结构的珊瑚状结构组成的双峰形态。 详细讨论了这种双峰形态形成的形成机制。 通过该方法制备的优化聚苯胺显示出优异的电化学能量存储性能,特定电容为689Ω·f?g-1?在1?a?g?1和89%的良好保留率(613?f?g?1 )在10?a?g?1。 基于其的对称单元显示能量密度为12.6?1AT的功率密度为188.3≤kg≤1。 总之,这项工作为制造过超级电容器应用的多苯胺提供了一种新的方法。

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