Electrodeposited spruce leaf-like structured copper bismuth oxide electrode for supercapacitor application

Ahmed AL-Osta*, Bushra Saleh Samer, Umesh T. Nakate, Vijaykumar V. Jadhav, Rajaram S. Mane

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


Novel spruce leaf-like copper bismuth oxide (CuBi2O4) microstructured films have been deposited on stainless steel (SS) substrate by using a simple and cost-effective electrodeposition chemical route. The morphology of CuBi2O4 was studied using field emission scanning electron microscopy (FESEM) whereas X-ray diffraction (XRD) spectra recorded for phase confirmation. The spruce leaf-like architecture composed of nanoparticles was evidenced for the obtained CuBi2O4 material. The supercapacitor performance for prepared CuBi2O4 electrode calcined at 200, 300, 400, 500 °C temperatures were investigated. The cyclic-voltammetry and charge-discharge studies were carried out at different scan rates and current densities respectively. The highest specific capacitance 484 F/g was noted for CuBi2O4 electrode calcined at 500 °C at 10 mV/ s scan rate via cyclic-voltammetry analysis in 1 M NaOH electrolyte. The specific capacitance of 540.9 F/g was estimated from charge-discharge analysis at 10 mA/cm2 current density. The energy density of 146.8 Wh/Kg and power density 1555.5 W/Kg for optimized CuBi2O4 electrode at 10 mA/cm2 current density. The electrochemical impedance spectroscopy studies were also performed. The nanostructured CuBi2O4 material has exhibited supercapacitive properties for energy storage applications.

Original languageEnglish
Article number111359
JournalMicroelectronic Engineering
StatePublished - 15 May 2020
Externally publishedYes


  • Calcination effect
  • Charge transport kinetics
  • Copper bismuth oxide
  • Electrochemical measurements
  • Specific capacitance
  • Spruce leaf-like nanostructure


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