Electrochemical investigation of Ag mixed Cd–Cu nanoferrite mixed reduced graphene oxide as improved platform for supercapacitor application

Abstract Ag mixed Cd–Cu nanoferrite (Cd 0.5 Cu 0.25 Fe 2 O 4; Ag-CCF) has been successfully prepared by co-precipitation method. The grain size of ferrite was 10 nm estimated HRTEM; while the specific surface area measured BET 161 m /g. XRD measurement shows a good crystallization phase and FT-IR spectrum represents two characterized bands spinel 428 cm −1 596 . three broad peaks Raman 276 , 386 643 are phase. VSM represented superparamagnetism with saturation magnetization 30 emu/g, remnant 1 emu/g coercive field 38G. Ag-CCF/rGO (reduced grapheme oxide) composite used for electrode in supercapacitor deliver capacitance 306 F/g at scan rate 5 mV/s. Nyquist plot that charge transfer resistance Cd–CuFe 4 /rGO composites (82.3 Ω) much smaller than pristine Cd-CuFe (591 Ω). This can be ascribed to introduction conductive graphene improved electrical conductivity composites, leading better capability higher comparison