Facial growth of Co(OH)2 nanoflakes on stainless steel for supercapacitors: effect of deposition potential

  • N. C. Maile
  • R. T. Patil
  • S. K. Shinde
  • D. -Y. Kim
  • A. V. Fulari
  • D. S. Lee
  • V. J. FulariEmail author


In this work, the nanoflakes of Co(OH)2 have been grown successfully on a stainless steel (SS) substrate at an ambient temperature. The novel architecture, binder free synthesis and considerable capacitance of Co(OH)2 nanoflakes render them as a potential candidate to be used as an electrode material for supercapacitor application. It is observed that the different cathodic potentials have a dramatic impact on the growth mechanism of Co(OH)2 nanoflakes. The prepared thin films were subjected for their structural and morphological study using X-ray diffraction, field emission scanning electron microscope, energy dispersive X-ray spectroscopy, etc. The supercapacitive properties of Co(OH)2 nanoflakes have been studied using cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy techniques. The Co(OH)2 nanoflakes evaluated a maximum specific capacitance of 275 F g−1 for 5 mV s−1 in 1 M KOH.



Authors are grateful to UGC for financial assistance through UGC major research project (F.No. 43-532/2014 (SR) MRP-MAJOR-PHYS-2013-35168 dated 07/10/2015).


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Authors and Affiliations

  • N. C. Maile
    • 1
  • R. T. Patil
    • 1
  • S. K. Shinde
    • 2
  • D. -Y. Kim
    • 2
  • A. V. Fulari
    • 3
  • D. S. Lee
    • 4
  • V. J. Fulari
    • 1
    Email author
  1. 1.Holography and Materials Research Laboratory, Department of PhysicsShivaji UniversityKolhapurIndia
  2. 2.Department of Biological and Environmental ScienceDongguk University-IlsanGoyang-siRepublic of Korea
  3. 3.Department of PhysicsOsmania UniversityHyderabadIndia
  4. 4.Department of Environmental EngineeringKyungpook National UniversityDaeguRepublic of Korea

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