Synthesis of Mesoporous NiFe2O4 Nanoparticles for Enhanced Supercapacitive Performance

In this study a simple one step hydrothermal method has been utilized to synthesize mesoporous NiFe 2 O 4 nanoparticles.The prepared NiFe 2 O 4 (NFO) is highly crystalline and possesses homogenously distributed mesopore.The structural analysis, thermal stability and morphological studies of mesoporous NFO nanoparticles are performed using XRD, TGA, TEM, FE-SEM and surface area analyzer.The supercapacitive behavior of synthesized nanomaterial is investigated in a three-electrode configuration cell with 2 M KOH electrolyte using cyclic voltammetry, galvanostatic charge-discharge cycling and electrochemical impedance spectroscopy.The mesoporous crystalline NFO nanoparticles (diameter 10-15 nm) intuitively possess interesting structural advantages, such as high surface area (148 m 2 .g-1 ), fast electron and ion transport.As a result, it exhibits very good specific capacitance (1040 F.g -1 at 1 A.g -1 ) and good cycling stability (~70 % up to 500 cycles at 2 A.g -1 ) when examined as electrode material for high performance electrochemical supercapacitor applications.