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利用以苯胺与过硫酸铵制备的聚苯胺和改进的Hummers法制备的氧化石墨烯(GO)为原料,将聚苯胺分散于GO浊液中,再对GO进行还原,制备超级电容器电极材料石墨烯(RGO)/聚苯胺(PANI)复合材料(GRP),利用X射线衍射(XRD)对其结构进行了表征,并对复合材料电化学性能进行了测试。结果表明,复合材料展示良好比电容特性,同时又具有稳定电化学性能。GRP在0.1A/g的电流密度下比电容达到510F/g,1.0A/g电流密度下比电容为485F/g,经过2000次的充放电循环后比电容保持率为92%,即复合物比电容远大于石墨烯,在化学稳定性上远好于PANI。放电响应效率高,在电极中电解质离子容易扩散和迁移。
Using polyaniline prepared from aniline and ammonium persulfate and modified graphene oxide (GO) as raw materials, the polyaniline was dispersed in GO turbid solution, and then the GO was reduced to prepare supercapacitor electrode material graphene (RGO) / polyaniline (PANI) composites (GRP). The structure of the composites was characterized by X-ray diffraction (XRD) and the electrochemical properties of the composites were tested. The results show that the composite exhibits good specific capacitance and stable electrochemical properties. GRP has a specific capacitance of 510F / g at a current density of 0.1A / g, a specific capacitance of 485F / g at a current density of 1.0A / g, and a specific capacitance of 92% after 2000 charge-discharge cycles, Much larger than the capacitance of graphene, chemical stability is much better than PANI. Discharge response is high and electrolyte ions are easily diffused and migrate in the electrode.