Fabrication of a supporting kapok-carbon/rGO electrode via self-assembly with enhanced capacitance

To address the limitations associated with biomass mass transfer and improve the capacitance of graphene oxide (GO), a supporting Kapok Fiber carbon/reduced GO (C-KF/rGO) electrode was constructed via an effective combination of C KF and GO. The carbon electrode (C-KF-800/rGO-1:1) fabricated by mixing GO with C-KF-800 in a 1:1 ratio showed a specific capacitance of 721.6 mF.cm(-2) at a current density of 0.5 mA.cm(-2). Moreover, the capacitance retention rate of this film was 95.71 % after 5000 cycles at a current density of 10 mA.cm(-2). The use of GO as a stable support system, combined with the kapok carbon's large surface area and a unique tubular transmission channel for carbon electrodes, contributed to this result. Furthermore, the combination prevents agglomeration and restacking between graphene layers, ensuring effective electron and ion transport and providing a C KF /rGO composite carbon-supported electrode with excellent electrochemical properties. Therefore, C-KF-800/rGO-1:1 represents a promising material for use as a supporting biomass-based carbon electrode.