Design and Fabrication of Printed Paper-Based Hybrid Micro-Supercapacitor by using Graphene and Redox-Active Electrolyte
Nagar, Bhawna (Institut Català de Nanociència i Nanotecnologia)
Dubal, Deepak P. (Institut Català de Nanociència i Nanotecnologia)
Baptista Pires, Luis Miguel (Institut Català de Nanociència i Nanotecnologia)
Merkoçi, Arben (Institut Català de Nanociència i Nanotecnologia)
Gómez Romero, Pedro 1959- (Institut Català de Nanociència i Nanotecnologia)

Date:	2018
Abstract:	Inspired by future needs of flexible, simple, and low-cost energy storage devices, smart graphene-based micro-supercapacitors on conventional Xerox paper substrates were developed. The use of redox-active species (iodine redox couple) was explored to further improve the paper device's performance. The device based on printed graphene paper itself already had a remarkable maximum volumetric capacitance of 29. 6 mF cm (volume of whole device) at 6. 5 mA cm. The performance of the hybrid electrode with redox-active potassium iodide at the graphene surface was tested. Remarkably, the hybrid device showed improved volumetric capacitance of 130 mF cm. The maximum energy density for a graphene+KI device in HSO electrolyte was estimated to be 0. 026 mWh cm. Thus, this work offers a new simple, and lightweight micro-supercapacitor based on low-cost printed graphene paper, which will have great applications in portable electronics.
Note:	Número d'acord de subvenció MINECO/MAT2015-68394-R
Note:	Número d'acord de subvenció MINECO/MAT2017-87202-P
Note:	Número d'acord de subvenció AGAUR/2017/SGR-870
Note:	Número d'acord de subvenció MINECO/SEV-2013-0295
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	article ; recerca ; acceptedVersion
Subject:	Electrochemistry ; Electrolytes ; Graphene ; Portable electronics ; Supercapacitors
Published in:	ChemSusChem, Vol. 11, Issue 11 (June 2018) , p. 1849-1856, ISSN 1864-564X

DOI: 10.1002/cssc.201800426

Postprint 18 p, 872.4 KB

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Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles