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Thermal Effects on Electrochemical Performance of Copper Oxide Nanoparticles Decorated Amine-Functionalized Graphene Oxide for Ultrahigh Energy Density Supercapacitor with Real-Life Application by Bhuman Gangopadhyay; Amit Mallik; Mir Sahanur Ali; Ashis Halder; Rashbihari Layek; Devdas Karmakar; Srikanta Karmakar; Koushik Dutta; Tushar Dhabal Das; Subrata Panda; Pathik Kumbhakar; Dipankar Chattopadhyay is a Materials Science article available to read on EtoBox.

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The article describes the synthesis of copper oxide decorated amine functionalized graphene oxide (AGO) composites at four different temperatures, i.e., 50, 85, 120, and 155 °C. The process involves the generation of AGO by chemical functionalization and using -NH 2 groups to anchor Cu 2+ ions via coordinate bonds. Reduction of Cu 2+ results in Cu + on the surface of AGO, which is confirmed by XRD and TEM. The surface composition and amine functionalization of nanocomposites were confirmed by XPS and FTIR analyses. The dielectric measurements display a decrease in dielectric constant with an increase in frequency, for all nanocomposites, signifying better capacitive behavior owing to better polarization. AGC85 displays ultrahigh specific capacitance and energy density values of ∼3890 F/g and 540.71 Wh•kg -1 at 2.0 A/g current density. Interestingly, after 10000 cycles, AGC85 shows excellent capacitance retention of about 85.6%. A solid state supercapacitor device was fabricated with AGC85 (active material), which can supply power for running an LED bulb for 60 min prior to a few minutes of charging. The low-temperature synthesized copper nanoparticle intercalated on aminefunctional

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Author

Bhuman Gangopadhyay; Amit Mallik; Mir Sahanur Ali; Ashis Halder; Rashbihari Layek; Devdas Karmakar; Srikanta Karmakar; Koushik Dutta; Tushar Dhabal Das; Subrata Panda; Pathik Kumbhakar; Dipankar Chattopadhyay

Publisher

American Chemical Society (ACS)

Published

2023

Language

EN

Field

Materials Science (Physical Sciences)