A flexible ternary oxide based solid-state supercapacitor with excellent rate capability

Boruah, Buddha Deka and Misra, Abha (2016) A flexible ternary oxide based solid-state supercapacitor with excellent rate capability. In: JOURNAL OF MATERIALS CHEMISTRY A, 4 (44). pp. 17552-17559.

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Abstract

A porous vanadium doped-zinc-nickel-cobalt ternary oxide (VZnNiCo) nanostructure is presented for a high performance flexible supercapacitor (SC). The symmetric solid-state SC demonstrated a remarkable enhancement in the capacitive response as compared to SCs based on its individual oxide constituents e.g. NiCo2O4//NiCo2O4 or ZnNiCo//ZnNiCo. A synergistic redox reaction from all the ions was offered to increase the capacitive response and moreover, direct growth of the unique porous nanostructure on a flexible current collector exhibited excellent ion-diffusion efficiency with a high electrochemically active surface area. The flexible SC demonstrated excellent capacitive response stability towards large mechanical deformations for a much higher scan rate up to 5000 mV s(-1) in addition to high cycling stability. Hence, the present work opens novel avenues towards exploiting hybrid flexible energy storage devices that are mechanically robust with a highly stable capacitive ability at a much higher scan rate.

Item Type:	Journal Article
Publication:	JOURNAL OF MATERIALS CHEMISTRY A
Additional Information:	Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	30 Dec 2016 07:20
Last Modified:	30 Dec 2016 07:20
URI:	http://eprints.iisc.ac.in/id/eprint/55655

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