MAZHAR MEHMOOD
Articles written in Bulletin of Materials Science
Volume 43 All articles Published: 9 October 2020 Article ID 0273
ASMA AAMIR ADIL AHMAD YAQOOB KHAN ZIA -UR-REHMAN NOOR UL AIN SAID KARIM SHAH MAZHAR MEHMOOD BILAL ZAMAN
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.
Volume 46, 2023
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Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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