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      https://www.ias.ac.in/article/fulltext/boms/043/0273

    • Keywords

       

      Electrodeposition; vanadium pentoxide; nickel foam; supercapacitors.

    • Abstract

       

      Thick coatings, up to few microns, of the active material are necessary for the preparation and commercialization of electrode materials for energy storage applications, as thin layers of active material drains out of the currentcollector after a few cycles. Moreover, larger mass loading of the active material is required for high energy density pseudocapacitor applications as more active material involves more redox reactions to store large amount of charge. Thisstudy reports thick electrodeposits of vanadium pentoxide (V$_2$O$_5$) on nickel foam substrate and its evaluation as supercapacitor electrode material. Vanadium pentoxide with thickness of 3–5 $\mu$m were successfully electrodeposited (potentiostatically and galvanostatically) on metallic nickel foam to obtain potentiostatically electrodeposited V$_2$O$_5$ on nickel foam (PE-V$_2$O$_5$Ni) and galvanostatically electrodeposited V$_2$O$_5$ on nickel foam (GE-V$_2$O$_5$Ni), respectively. The PEV$_2$O$_5$Ni electrode with layered morphologies exhibits more charge storage and discharge capability than spherically dense morphologies of GE-V$_2$O$_5$Ni electrodes. The synthesized electrode materials were structurally, morphologically andchemically characterized through X-ray diffractometer, X-ray photoelectron spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. The PE-V$_2$O$_5$Ni and GE-V$_2$O$_5$Ni exhibited gravimetric capacitance of 657 and 421 F g$^{-1}$ with tremendous stability in the polypropylene carbonate electrolyte.

    • Author Affiliations

       

      ASMA AAMIR1 ADIL AHMAD2 3 YAQOOB KHAN3 ZIA -UR-REHMAN1 NOOR UL AIN1 SAID KARIM SHAH2 MAZHAR MEHMOOD4 BILAL ZAMAN5

      1. Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
      2. Department of Physics, Faculty of Physical and Numerical Sciences, Abdul Wali Khan University, Mardan 23200, Pakistan
      3. Nanosciences and Technology Department, National Centre for Physics, QAU Campus, Islamabad 45320, Pakistan
      4. National Centre for Nanotechnology, Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences, P.O. Nilore, Islamabad 45650, Pakistan
      5. College of Material Science and Chemical Engineering, Hainan University, Haikou 570228, China
    • Dates

       
  • Bulletin of Materials Science | News

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