High-performance, flexible reduced graphene oxide (rGO)-polypyrrole (PPy)/nanoporous gold (NPG) electrodes are prepared by a facile electrochemical interfacial polymerization method using NPG as the substrate. Owing to the synergistic effect of three-dimensional (3D) porous architecture and superior electrical conductivity, the prepared electrode not only exhibits a good areal capacitance (232 mF/cm²), but also shows high volumetric capacitance (555.6 F/cm³). Hence, an all-solid-state supercapacitor assembled with rGO-PPy/NPG electrodes exhibits a high energy density of 238.8 mW h/cm³. Besides, this flexible supercapacitor also shows excellent cycling stability with retention of 91% with respect to the initial capacitance after 2000 galvanostatic charge–discharge cycles. This work offers a novel avenue for designing flexible supercapacitor.

高性能，灵活的还原型氧化石墨烯（rGO）-聚吡咯（PPy）/纳米孔金（NPG）电极是通过以NPG为底物的简便电化学界面聚合方法制备的。由于三维（3D）多孔结构和优异的导电性的协同作用，制得的电极不仅显示出良好的面电容（232 mF / cm ²），而且显示出高体积电容（555.6 F / cm ³） 。因此，与rGO-PPy / NPG电极组装的全固态超级电容器表现出238.8 mW h / cm ³的高能量密度。此外，这种柔性超级电容器还具有出色的循环稳定性，相对于2000次恒电流充放电循环后的初始电容而言，保留率高达91％。这项工作为设计柔性超级电容器提供了一条新颖的途径。