▎ 摘　　要

Suppressing sheets stacking of graphene oxide (GO) films by introducing conductive polymers proves to be an effective way to develop graphene-based electrodes for electrochemical energy storage. This work reports a facile a method for the preparation of poly(3,4-ethylene-dioxythiophene)/GO (PEDOT/ GO) hybrid films by incorporating poly(3,4-ethylene-dioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) between GO sheets. The subsequent dissolution of partial PSS substantially promotes the ion diffusion kinetics and simultaneously enhances film conductivity up to 931 S m(-1). It has a specific capacitance of 210 F g(-1) and retains 98% of its capacitance after 10 000 cycles. Further reduction of PEDOT/GO film in hydrazine vapor converts GO to chemically reduced graphene oxides (rGO) and simultaneously expands the compact film into a foam-like structure. Due to more opened electrochemically active sites and favorable ion pathways, the enhanced capacitive performance including larger specific performances of 257 F g(-1) , higher rate capability of 54% in 0.2-10 A g(-1), and superior cycling stability with 97% capacitance preservation over 10 000 cycles has been achieved for the PEDOT/rGO film. An all-solid-state capacitor assembled with PEDOT/rGO films also demonstrates good capacitive performance and satisfactory flexibility at large bending angles.