▎ 摘　　要

A bilayer hybrid nanocomposite, poly(3,4-ethylenedioxythiophene)/graphene oxide with poly(3,4-ethylene-dioxythiophene)/nanocrystalline cellulose (PEDOT/GOIPEDOT/NCC) was prepared through electrochemical deposition using layer-by-layer assembly. Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and field emission scanning electron microscope (FESEM) techniques were used to study thoroughly the structure and morphology of nanocomposites. The as-prepared bilayer showed good performance with high specific capacitance (129.03 F/g at 25 mV/s), good capacity retention, remarkably low charge transfer resistance (4.02 Omega) and good specific power and specific energy compared to its individual binary hybrid nanocomposites (PEDOT/NCC and PEDOT/GO). The as-mentioned electrochemical performance of bilayer could be related to its well-structured morphology and synergistic effect provided by the individual binary hybrid nanocomposites.