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Polyaniline-Stabilized Intertwined Network-like Ferrocene/Graphene Nanoarchitecture for Supercapacitor Application
IIT ISM Dhanbad, Dept Appl Chem, Dhanbad 826004, Jharkhand, India..
IIT ISM Dhanbad, Dept Appl Chem, Dhanbad 826004, Jharkhand, India..
IIT ISM Dhanbad, Dept Appl Chem, Dhanbad 826004, Jharkhand, India..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
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2017 (English)In: Chemistry - An Asian Journal, ISSN 1861-4728, E-ISSN 1861-471X, Vol. 12, no 8, p. 900-909Article in journal (Refereed) Published
Abstract [en]

The present work highlights the effective H-p interaction between metallocenes ( ferrocene; Fc) and graphene and their stabilization in the presence of polyaniline ( PANI) through pi-pi interactions. The PANI-stabilized Fc@ graphene nanocomposite ( FcGA) resembled an intertwined network-like morphology with high surface area and porosity, which could make it a potential candidate for energy-storage applications. The relative interactions between the components were assessed through theoretical ( DFT) calculations. The specific capacitance calculated from galvanostatic charging/discharging indicated that the PANI-stabilized ter-nary nanocomposite exhibited a maximum specific capacitance of 960 Fg(-) at an energy density of 85 WhKg(-1) and a current density of 1 Ag-. Furthermore, electrochemical impedance spectroscopy (EIS) analysis confirmed the low internal resistance of the as-prepared nanocomposites, which showed improved charge-transfer properties of graphene after incorporation of Fc and stabilization with PANI. Additionally, all electrodes were found to be stable up to 5000 cycles with a specific capacitance retention of 86%, thus demonstrating the good reversibility and durability of the electrode material.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2017. Vol. 12, no 8, p. 900-909
Keywords [en]
electrochemistry, metallocenes, nanostructures, pi interactions, supercapacitors
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-322177DOI: 10.1002/asia.201700124ISI: 000399690200014OAI: oai:DiVA.org:uu-322177DiVA, id: diva2:1096139
Available from: 2017-05-17 Created: 2017-05-17 Last updated: 2017-05-17Bibliographically approved

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Jena, Naresh K.

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