Synthesis of Biomass-Based Porous Carbon Nanofibre/Polyaniline Composites for Supercapacitor Electrode Materials

Carbonized bacterial cellulose (CBC) nanofibre surfaces coated with polyaniline (PANI) were successfully designed and prepared via in-situ polymerization with different dopant acids (i.e., H3PO4 and TsOH). By combining the high-specific-area CBC nanofibres and conductive PANI, the CBC/PANI composite electrode exhibited greatly improved capacitive performance. The specific capacitance of CBC/PANI-T-0.5 reached 324.8 F/g at 1 A/g. Moreover, the as-assembled CBC/PANI-T-0.5//N, P-CBC asymmetric supercapacitor showed good capacitance, great rate performance and good long-term cycling performance, distinctly demonstrating that the CBC/PANI-T composite is a promising electrode material for supercapacitor devices.