【摘要】 用硼氢化钠（NaBH₄）还原氧化石墨烯得到还原石墨烯（rGO）分散液,rGO分散液与苯胺在酸性条件下原位聚合得到高比表面积三维有序结构的聚苯胺/石墨烯纳米复合材料。由场发射扫描电镜（FESEM）、透射电镜（TEM）、X射线光电子能谱（XPS）和X射线衍射（XRD）对其表面形貌和结构进行表征。结果表明:复合材料的比表面积高达136.9 m²/g,高于纯聚苯胺的比表面积（32.71 m²/g）;直径10²0 nm的聚苯胺纳米棒均匀地垂直生长在石墨烯表面。在0.5 A/g的电流密度下,复合材料比电容达到358 F/g,大于石墨烯和聚苯胺的比电容;当充放电电流密度由0.5 A/g增加到10 A/g时,电容保留率达74.3%,表现出增强的倍率性能;在10 A/g高电流密度下,经过500次的充放电循环后容量保持率达到83.7%。更多还原

【Abstract】 Water dispersion of reduced graphene oxide（ r GO） was prepared by reducing graphene oxide（ GO） with sodium borohydride（ NaBH₄） and three-dimensional ordered polyaniline/graphene nanocomposite with high surface area was successfully fabricated via in situ polymerization. The surface morphology and structure were investigated by using field emission scanning electron microscopy（ FESEM）,transmission electron microscopy（ TEM）,X-ray photoelectron spectroscopy（ XPS） and X-ray diffraction（ XRD）. The results exhibited that the surface area of the nanocomposite reached up to 136. 9 m²/ g and was higher than that of polyaniline（ PANI）（ 32. 71 m²/ g）. Polyaniline nanorods with diameter of 10 20 nm were uniformly aligned on surfaces of r GO nanosheet. The specific capacitance of the composite material reached 358 F / g at a charge-discharge current density of 0. 5 A / g and was higher than that of r GO and polyaniline. The capacitance retention of the composite reached 74. 3% when the current density increased from 0. 5 to 10 A / g. The results indicate that this new composite possesses good rate capability.Furthermore,the capacitance retention remains 83. 7% after 500 cycles of charge-discharge at 10 A / g.更多还原