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High-performance capacitive behavior of layered reduced graphene oxide and polyindole nanocomposite materials

机译：层状氧化石墨烯和聚吲哚纳米复合材料的高性能电容性能

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In this work, a high-capacitance hybrid nanocomposite based on reduced graphene oxide (RGO) and polyindole (PIn) was fabricated via an in situ chemical oxidative polymerization approach. The structure and morphology of PIn/RGO were investigated by FT-IR, Raman spectroscopy, SEM and TEM. The electrochemical properties of this electrode in aqueous H _(2) SO _(4) electrolyte were also investigated by cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy (EIS). Compared to RGO and PIn electrodes, the PIn/RGO hybrid nanocomposite shows a large improved specific capacitance of 322.8 F g ~(?1) at 1.0 A g ~(?1) , good stability with a cycling efficiency of 94.5% after 1000 cycles, and high energy density of 36 W h kg ~(?1) at a high power density of 5000 W kg ~(?1) . The enhanced performance is proposed to arise from the synergetic effect between PIn and RGO. In addition, the symmetric PIn/RGO//PIn/RGO supercapacitor showed specific capacitance of 99.8 F g ~(?1) and only 3.7% decay after 1000 cycles. These results imply that PIn/RGO should be a promising electrode material for supercapacitor applications.
机译：在这项工作中，通过原位化学氧化聚合方法制造基于还原的石墨烯（RGO）和聚吲哚（销）的高电容杂化纳米复合材料。通过FT-IR，拉曼光谱，SEM和TEM研究了PIN / RGO的结构和形态。通过循环伏安法，电镀电荷/放电和电化学阻抗光谱（EIS）研究该电极在H _（2）中的电解质中该电极的电化学性质。与RGO和销电极相比，引脚/ RGO杂交纳米复合材料显示出在1.0Ag〜（α1）的大型改进的322.8f g〜（α1）的比例，良好的稳定性，1000次循环后循环效率为94.5％ ，高功率密度为36WH kg〜（α1），高功率密度为5000W kg〜（α1）。提高了增强的性能，从PIN和RGO之间的协同作用产生。此外，对称引脚/ RGO // PIN / RGO超级电容器显示出99.8F G〜（α1）的特定电容，1000次循环后仅3.7％衰减。这些结果意味着PIN / RGO应该是超级电容器应用的有希望的电极材料。

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