One-step electrodeposited 3D-ternary composite of zirconia nanoparticles, rGO and polypyrrole with enhanced supercapacitor performance

Alves, Ana Paula P and Koizumi, Ryota and Samanta, Atanu and Machado, Leonardo D and Singh, Abhisek K and Galvao, Douglas S and Silva, Glaura G and Tiwary, Chandra S and Ajayan, Pulickel M (2017) One-step electrodeposited 3D-ternary composite of zirconia nanoparticles, rGO and polypyrrole with enhanced supercapacitor performance. In: NANO ENERGY, 31 . pp. 225-232.

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Abstract

Supercapacitor electrodes consisting of conjugated polymers (CP), metal oxides and graphene nanosheets have been explored as a strategy to achieve high specific capacitance, power, energy density, and stability. In this work, we synthesized a 3D structure composed of zirconia oxide nanoparticles (ZrO2), reduced graphene oxide (rGO) and polypyrrole (PPy), using a simple and easily scalable one-step chronopotentiometry method. Detailed characterization revealed that the addition of rGO and ZrO2 modified the morphology of the electrode material. The capacitance of the resulting architecture improved by up to a 100%. The ternary composite featured high stability, with an increase of 5% in capacitance after a thousand cycles. DFT and MD simulations were carried out in order to provide further insight on the role of zirconia.

Item Type:	Journal Article
Publication:	NANO ENERGY
Publisher:	ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	15 Mar 2017 04:44
Last Modified:	15 Mar 2017 04:44
URI:	http://eprints.iisc.ac.in/id/eprint/56389

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