高电化学性能聚苯胺纳米纤维/石墨烯复合材料的合成

聚苯胺纳米纤维(PANI-F)与氧化石墨烯(GO)经组装后,进行水热反应,制备了PANI-F/rGO(还原的氧化石墨烯)复合材料.利用扫描电子显微镜(SEM),傅立叶红外光谱仪(FT-IR),X射线粉末衍射仪(XRD)对样品形貌和结构进行表征;同时,借助循环伏安(CV),恒电流充放电(GCD),交流阻抗(EIS)对样品的电化学性能进行了测试.结果表明:rGO均匀包裹在PANI-F表面,在1M H2SO4的电解液中,当电流密度为1A/g时,PANI-F比电容为378F/g,而PAGO10(PANI与GO的质量比为10∶1),比电容达517F/g;且当电流密度10 A/g时,PAGO10的比电容为356 F/g,而PANI-F的比电容仅为107F/g.

Synthesis of High Electrochemical Performance of PANI-F/GNs Composites

A polyaniline fibers (PANI-F)/ reduced graphene oxide (rGO) composite was synthesized by using self-assembly of PANI-F and GO followed by hydrothermal reaction. The morphology and structure of samples were characterized with scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FT-IR)and X-ray diffraction (XRD).The electrochemical properties were characterized with cyclic voltammetry (CV), galvanostatic charge/discharge(GCD) and electrochemical impedance spectrum(EIS). It showed that the rGO was homogeneously coated on the surfaces of PANI-F, and a high specific capacitance of 517 F/g (based on PAGO10 composite) was obtained at a current density of 1 A/g, compared with 378 F/g for PANI-F. Most of all, a high specific capacitance of 356 F/g was obtained at a current density of 10 A/g, compared with 107 F/g for PANI-F.