Free-standing flexible supercapacitive electrodes have practical application for wearable energy storage devices. In this paper, graphene paper (GP), a flexible electrode substrate, was prepared by one-step reduction of graphene oxide (GO) using HI solution. GP can be used independently as a flexible electrode with specific capacitance of 227 F/g. In order to make up for the shortage of GP specific capacitance storage, polyaniline (PANI) with high specific capacitance and good electrical conductivity was selected to composite with GP by electrochemical polymerization approach. This method to fabricate electrode material by direct electrochemical polymerization avoids the use of conductive binder and organic solvent. Owing to the specific capacitance contribution of PANI and GP, the PANI/GP composites exhibit higher specific capacitance when the polymerization time is 30 s and the polymerization voltage is 0.8 V. At 1 A/g current density, the specific capacitance of composite is up to 759 F/g, which is 3.34 times of neat GP.

独立式柔性超级电容电极在可穿戴储能设备中具有实际应用。在本文中，石墨烯纸（GP）是一种柔性电极基板，通过使用 HI 溶液一步还原氧化石墨烯（GO）制备。GP 可独立用作柔性电极，比电容为 227 F/g。为了弥补GP比电容存储的不足，选择具有高比电容和良好导电性的聚苯胺（PANI）通过电化学聚合方法与GP复合。这种通过直接电化学聚合制备电极材料的方法避免了使用导电粘合剂和有机溶剂。由于PANI和GP的特定电容贡献，