Maximizing the electrochemical efficiency of Ce doped SnFe2O4 through hydrothermal route for supercapacitor applications

Improving the ion/charge transport kinetics, chemical activity of surfaces and reduction of ion-diffusion pathways in metallic oxides with nanoscale structures is an important challenge in the field of supercapacitor development. Materials with outstanding characteristics have been achieved by a metal-doping method that enhances electrical conductivity. Herein, cerium-doped stannous ferrite (Ce-SnFe2O4) was developed by an easy and simple hydrothermal method. Different physical and electrochemical analysis methods were utilized to examine the manufactured electrode samples. The material showed a maximum specific capacitance (Cs) of 1216 F g−1 and specific capacity (Qs) of 645 C g−1 at 1 A g−1, along with outstanding cyclic durability across 5000 cycles. The specific energy (SE) was also assessed to be 47.7 Wh Kg−1 and the specific power (SP) was 265 W kg−1 at 1 A g−1. Moreover, synthesized doped material demonstrates the lower value of impedance (Rct = 0.11 Ω). Hence, the incorporation of cerium resulted in an improvement in the material's dampness which let the electrolyte penetrate the material more effectively. Additionally, the electrolyte came into complete contact with the active site, which resulted in a rise in the efficiency of the interface transmission. Based on these findings, the Ce-doped SnFe2O4 material has the potential to be utilized in future supercapacitor applications.