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

Е-mail [email protected]
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 (2) , 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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