Enhancement in electrochemical behavior of cobalt doped α-MnO2 nanoparticles

In this experiment, the special prominence is given to the influence of Cobalt (Co) doped alpha-MnO2 NPs synthesized via co-precipitation technique. X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscope (SEM) with Energy Dispersive X-ray (EDX) analysis are used to examine the Co doped alpha-MnO2 nanoparticles. Further, the capacitance natures of the electrodes were determined from cyclic voltammetry, galvanostatic charge-discharge measurement and electrochemical impendence spectroscopy. As from the electrochemical analysis, the prepared electrode was showing the pseudo capacitance nature. Also, the prepared Co doped alpha-MnO2 electrode was showing the higher capacitance values of 1015 F/g at 10 mV/s which is more than the pure alpha-MnO2 (901 F/g at 10 mV/s). In addition, the study of charge-discharge curve shows that the capacitance values of the Co doped alpha-MnO2 (996 F/g at 1 A/g) electrode is more than the pure alpha-MnO2 (876 F/g at 1 A/g) electrode. Moreover, Co doped alpha-MnO2 electrode shows the much lower Rct (charge transfer) value which indicates the better SC performance of the prepared electrode material.

Automated summary

This experiment focuses on the influence of Co-doped α-MnO2 nanoparticles synthesized via co-precipitation technique. Various characterization techniques were used to examine the Co-doped α-MnO2 nanoparticles, and electrochemical analysis was conducted to evaluate their capacitance properties.