Sol-gel Synthesis and Supercapacitive Characterization of Bismuth Vanadate

Authors Shankar G. Randive, Rohan M. Kore, Balkrishna J. Lokhande

Lab of Electrochemical Studies, PAH Solapur University, Solapur 413255, MS., India

Issue Volume 12, Year 2020, Number 2
Dates Received 15 February 2020; revised manuscript received 15 April 2020; published online 25 April 2020
Citation Shankar G. Randive, Rohan M. Kore, Balkrishna J. Lokhande, J. Nano- Electron. Phys. 12 No 2, 02027 (2020)
PACS Number(s) 81.20.Fw, 61.46.Df
Keywords Supercapacitor (3) , Sol-gel synthesis, Bismuth vanadate, Cyclic voltammetry (3) , Doctor blade.

In this work, supercapacitive characterizations of the bismuth vanadate (BiVO4) nanoparticles is studied. BiVO4 is synthesized by the sol-gel method. The single phase of BiVO4 powder obeys monoclinic crystal structure as confirmed from X-ray diffraction. The electrodes of BiVO4 powder were prepared by doctor blade method. Electrochemical characterizations are carried by using cyclic voltammetry gives the maximum specific capacitance 494.1 F/gm at 5 mV/s scan rate. The maximum energy density, power density and efficiency for the optimized electrode is 435 Wh/kg, 1.69 kW/kg and 88.67 %, respectively. According to the electrochemical impedance spectroscopy curve of the optimized sample, the internal resistance of the BiVO4 electrode was 0.12 .

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