Comparative Electrochemical Evaluation of Green and Conventionally Synthesized Cowo4 for High-Performance Supercapacitors

Modern science is paying close attention to the development of green chemistry in the production of nanoparticles using plants and their components. We successfully report the green synthesis from CoWO4 nanoparticles using an aqueous leaf extract of Corallocarpus Epigaeus for a supercapacitor applications. Structural properties were used to identify the formation of nanoparticles, and subsequent analysis using a X-ray diffraction (XRD), higher resolution transmission electron microscope (HRTEM), scanning electron microscope (SEM), and Fourier Transform Infra-Red (FT-IR) spectrophotometer verified the results. For the purpose of creating safe, Sustainable, non-toxic and ecologically friendly biosynthesis processes, CoWO4 nanoparticles produced by a comprehensive green chemical approach would be advantageous. A three-electrode method was used to characterize the CoWO4 nanoparticles to examine their capacitances. The Specific capacitance value was calculated as 378 F g-1 with a scan rate of 5 mV s-1 prepared by using aqueous 2.0 M KOH solution. The cycle-life stability is observed for 5000 cycles for green and chemical synthesized CoWO4 nanoparticles. With the results, we could say that CoWO4 are suitable for supercapacitor electrode materials.