A 1 V supercapacitor device with nanostructured graphene oxide/polyaniline composite materials

Kumar, Deepak and Banerjee, Anjan and Patil, Satish and Shukla, Ashok K (2015) A 1 V supercapacitor device with nanostructured graphene oxide/polyaniline composite materials. In: BULLETIN OF MATERIALS SCIENCE, 38 (6). pp. 1507-1517.

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Abstract

Polyaniline and graphene oxide composite on activated carbon cum reduced graphene oxide-supported supercapacitor electrodes are fabricated and electrochemically characterized in a three-electrode cell assembly. Attractive supercapacitor performance, namely high-power capability and cycling stability for graphene oxide/polyaniline composite, is observed owing to the layered and porous-polymeric-structured electrodes. Based on the materials characterization data in a three-electrode cell assembly, 1 V supercapacitor devices are developed and performance tested. A comparative study has also been conducted for polyaniline and graphene oxide/polyaniline composite-based 1 V supercapacitors for comprehending the synergic effect of graphene oxide and polyaniline. Graphene oxide/polyaniline composite-based capacitor that exhibits about 100 F g(-1) specific capacitance with faradaic efficiency in excess of 90% has its energy and power density values of 14 Wh kg(-1) and 72 kW kg(-1), respectively. Cycle-life data for over 1000 cycles reflect 10% capacitance degradation for graphene oxide/polyaniline composite supercapacitor.

Item Type:	Journal Article
Publication:	BULLETIN OF MATERIALS SCIENCE
Publisher:	INDIAN ACAD SCIENCES
Additional Information:	Copy right for this article belongs to the INDIAN ACAD SCIENCES, C V RAMAN AVENUE, SADASHIVANAGAR, P B #8005, BANGALORE 560 080, INDIA
Keywords:	Supercapacitor; pseudocapacitance; polyaniline; graphene oxide; cycling stability
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	03 Dec 2015 04:48
Last Modified:	03 Dec 2015 04:48
URI:	http://eprints.iisc.ac.in/id/eprint/52847

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