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本研究通过电解剥落得到的表面石墨烯化的石墨电极(graphenelayers/graphite plate,GL/GP)为基底,在硫酸介质中以苯胺为单体,采用循环伏安法(cyclic voltammetry,CV)制备了表面石墨烯化的石墨/聚苯胺(graphene layers/graphite plate/polyaniline,GL/GP/PANI)电极,并探究了聚合圈数对GL/GP/PANI电极比电容的影响。利用场发射扫描电镜(scanning electron microscope,SEM)对电极材料的形貌进行表征。在05M H2SO4电解液中,对合成的电极材料进行循环伏安、恒电流充放电(chronopotentiometry,CP)和电化学稳定性测试。结果表明,在表面石墨烯化的石墨电极上合成的PANI具有棒状结构,电流密度为0.085mA/cm2时,GL/GP/PANI电容器的比电容可达1042.8F/g。本研究提供了一种新的超级电容材料基底电极的构建方式。
In this study, graphenelayers / graphite plate (GL / GP) obtained by electrolytic stripping was used as the substrate. Aniline was used as the monomer in the sulfuric acid medium. Cyclic voltammetry (CV) Surface graphene layers / graphite plate / polyaniline (GL / GP / PANI) electrodes, and investigate the influence of the number of polymerization cycles on the specific capacitance of the GL / GP / PANI electrodes. The morphology of the electrode material was characterized by scanning electron microscope (SEM). Cyclic voltammetry, chronopotentiometry (CP) and electrochemical stability testing of the synthesized electrode materials were carried out in 0.5 M H2SO4 electrolyte. The results showed that the PANI synthesized on the surface graphene electrode had a rod-like structure. The specific capacitance of the GL / GP / PANI capacitor was 1042.8F / g when the current density was 0.085mA / cm2. This study provides a new way to construct the base electrode of the supercapacitor material.