▎ 摘　　要

In this paper, using a low-cost paper fiber (PF) as a substrate, eigenstate polyaniline-coated PFs with graphene (GO/PANI/PF) ternary materials were synthesized by using the chemical oxidative polymerization method. Electrochemical measurements showed that the GO/PANI/PF electrode exhibited an excellent electrochemical performance compared with the PANI electrode. By adjusting the ratio of PANI and PF, the as-prepared GO/PANI/PF-2.5% electrode exhibited the highest specific capacitance 937 F g(-1)at current density 1 A g(-1)in a 0.5 M H(2)SO(4)aqueous solution, and 74.5% retention of initial capacitance after 2000 charge-discharge cycles at 5 A g(-1). The symmetric capacitor on the basis of GO/PANI/PF nanocomposite delivers a superior energy density of 10.12 Wh kg(-1)at 456 W kg(-1)at a current density of 1 A g(-1).