石墨烯接枝聚吡咯复合物的原位合成及其电容特性研究

采用化学接枝法原位合成了石墨烯接枝聚吡咯复合物, 对复合物的结构、形貌、导电率以及比电容值进行了测试和表征。结果表明制备的石墨烯接枝聚吡咯复合物中, 石墨烯与吡咯单体间产生了紧密的化学键结合, 吡咯在石墨烯层片上均匀分布, 石墨烯片层间的吡咯大量成链并与石墨烯层片相互连接, 测得复合物的电导率为3.32 S/cm, 比电容值可以达到284 F/g, 相比于纯聚吡咯的186 F/g的比电容值提高了52%, 具有优异的电容特性。

Synthesis and Capacitance Characteristics of the Graphene Grafted Polypyrrole Composites

The graphene grafted polypyrrole composites were in situ synthesized with the chemical grafting method. The testing and characterization of the structure and morphology indicated that the pyrrole monomer in the composites was grafted with the graphene lamellar layer on-chip evenly distributed through the amide bond, and a large number of the pyrrole grow into a chain connecting to the graphene layers. The synergistic effect of graphene and polypyrrole made the conductivity of the composites significantly improve from 0.22 S/cm to 3.32 S/cm. The capacitance value of graphene grafted polypyrrole composites reached 284 F/g, which increased by 52% compared with the specific capacitance of pure polypyrrole 186 F/g. It indicated the composites’s excellent characteristics of the capacitor.