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首页> 外文期刊>RSC Advances >Hierarchical nanostructured polypyrrole/graphene composites as supercapacitor electrode
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Hierarchical nanostructured polypyrrole/graphene composites as supercapacitor electrode

机译：分层纳米结构聚吡咯/石墨烯复合材料作为超级电容器电极

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The electrode composites composed of conductive polypyrrole and graphene for electrochemical capacitors have attracted extensive attention due to their potential application. Here a green synthesis method was used to fabricate hierarchical nanostructured polypyrrole/graphene composites by using vitamin C as a reducing agent. The as-prepared nanocomposites were characterized by FTIR, Raman, XRD, TGA, SEM and TEM techniques. The results showed that the polypyrrole chains in the PPy/rGO-CTAB composite successfully inserted into the two-dimensional space of graphene layers. In addition, the electrochemical performances of composites were measured with cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) experiments. The results indicated that PPy/rGO-CTAB composites possessed better thermal stability, higher specific capacitance, lower resistance, relatively better cyclic properties and faster response to oxidation/reduction than both PPy/rGO composites without addition of CTAB and rGO.
机译：由导电性聚吡咯和石墨烯组成的电化学电容器用电极复合材料由于其潜在的应用而备受关注。在这里，绿色合成方法被用来通过使用维生素C作为还原剂来制造分层的纳米结构的聚吡咯/石墨烯复合材料。通过FTIR，拉曼，XRD，TGA，SEM和TEM技术对制备的纳米复合材料进行了表征。结果表明，PPy / rGO-CTAB复合材料中的聚吡咯链成功插入了石墨烯层的二维空间。此外，通过循环伏安法（CV），恒电流充放电（GCD）和电化学阻抗谱（EIS）实验测量了复合材料的电化学性能。结果表明，与不添加CTAB和rGO的两种PPy / rGO复合材料相比，PPy / rGO-CTAB复合材料具有更好的热稳定性，更高的比电容，更低的电阻，相对更好的循环性能和更快的氧化还原反应。

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