聚苯胺/酚醛树脂基活性炭复合材料的制备及表征

摘要

采用KOH溶液活化后的酚醛树脂基活性炭作为复合材料前躯体,通过原位聚合法在活性炭表面沉积聚苯胺,制备得到聚苯胺/酚醛树脂基活性炭复合材料.采用透射电子显微镜(TEM)、X射线衍射(XRD)、循环伏安法以及恒电流充放电法对聚苯胺/酚醛树脂基活性炭复合材料的微观结构和电化学性能进行了研究表征.TEM照片表明聚苯胺薄膜整齐的沉积在活性炭表面上,形成了相互关联的多孔网状物,结合XRD图表明聚苯胺/酚醛树脂基活性炭复合材料处于纳米级无序形态,循环伏安法测试和恒电流充放电测试表明聚苯胺/活性炭复合材料电极有着良好的使用稳定性和电极可逆性,复合材料电极的比电容可达到187.5 F/g.%Polyaniline/phenolic resins-based activated carbon composite materials were prepared by in-situ polymerization process through depositing polyaniline on the surface of phenolic resins which were activated by KOH solution and used as the precursor of composite materials.The microstructure and electrochemical properties of the composite materials were characterized by means of transmission electron microscopy (TEM), X-ray diffraction (XRD), cyclic voltammetry and galvanostatic charge-discharge experiments. TEM image showed that the polyaniline films were well dispersed on the surface of activated carbon, forming a porous material related to each other. The XRD image showed that the composite materials were disordered morphology in nanoscale.The cyclic voltammetry and galvanostatic charge-discharge tests showed that the composite materials electrodes exhibited a high application stability and reversibility, the specific capacitance of the composite materials electrodes was 187.5 F/g.