rGO/NiFe2O4 and NiFe2O4 Based Electrodes for Supercapacitors

As the movement toward sustainability has ensued, supercapacitors have been at the forefront concerning physical charge storage. Supercapacitors have a higher power, energy density, and longer life as compared to regular capacitors. This paper synthesized and characterized NiFe2O4 and rGO/NiFe2O4 under Prof. Peter Lemaire and Dr. Rahul Singhal. NiFe2O4 was synthesized via the co-precipitation method using Iron (II) chloride, Nickel (II) chloride, and sodium hydroxide as precursor materials. The rGO/NiFe2O4 was synthesized in a similar fashion except for adding reduced graphene oxide to the solution. The thermal characterization of the synthesized materials was carried out using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The slurry of the synthesized materials was prepared by mixing synthesized materials, carbon black, and PVDF binder in a ratio of 80:10:10, using N-methyl pyrrolidone as a solvent. The slurry was then coated onto precleaned Ni mesh and dried overnight. The electrochemical characterization was carried out in 1M Na2SO4 solution using a fabricated electrode, platinum wire, and Ag/AgCl electrode as working, counter, and reference electrodes. The physical and electrochemical results will be presented in detail at the conference.