Synthesis and supercapacitor performance studies of graphene oxide based ternary composite
Sanjeev Verma, Vikas Kumar Pandey, Bhawna Verma
Abstract
We have synthesised a novel ternary composite GO/PANI/CuFe2 O4 byoxidative-polymerisation technique with enhanced electrochemical performance. The analysis like XRD, FTIR, HR-SEM and EDS confirm the successful formation of material. The ternary supercapacitor electrode material GO/PANI/CuFe2O4 consists of GO which acts as a substrate, PANI polymer and CuFe2 O4 that provides a more conducting nature. The GO/PANI/CuFe2O4 ternary gives the highest specific capacitance value of 790.12 F/g and 357.28 F/g at 1 mV/s and 1 A/g from 3E and symmetric 2E device system. The system exhibits a wide 1.2 V potential window. From the symmetric system, GO/PANI/CuFe2O4 had high specific energy of 71.45 Wh/kg at 1 A/g and 5983.90 W/kg specific power at 20 A/g with 78.77% retention of its original capacitance after 5000 cycles. The ternary system exhibited the least Rct value of 8.72 Ω. The synergistic effect between the individual components is the primary key for its outstanding electrochemical performance.