Abstract
A porous poly (5-cyanoindole) film was easily electrodeposited and for the first time evaluated as an active electrode material in 1.0 M H2SO4. The poly (5-cyanoindole) film was investigated using scanning electron microscope, cyclic voltammetry, impedance spectroscopy and charge-discharge test. The specific capacitance of poly (5-cyanoindole) electrode was 336 F g-1 under the current density of 2.4 A g-1 and decreased by 30% after 1000 cycles, which indicated that poly (5-cyanoindole) electrode had good cycle stability. Additionally, the specific energy of poly (5-cyanoindole) electrode reached 23 Wh kg-1 when the specific power was 190 W kg-1. These results indicated the feasibility of poly (5-cyanoindole) as electrode material for supercapacitors.
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