Development of hybrid materials based on sponge supported reduced graphene oxide and transition metal hydroxides for hybrid energy storage devices
Dubal, Deepak P. (Institut Català de Nanociència i Nanotecnologia)
Holze, Rudolf (Technische Universität Chemnitz. Institut für Chemie)
Gómez-Romero, Pedro 1959- (Institut Català de Nanociència i Nanotecnologia)

Date:	2014
Abstract:	Earnest efforts have been taken to design hybrid energy storage devices using hybrid electrodes based on capacitive (rGO) and pseudocapacitive (Ni(OH)₂ and Co(OH)₂) materials deposited on the skeleton of 3D macroporous (indicate sponge material) sponge support. Conducting framework was formed by coating rGO on macroporous sponge on which subsequent deposition of Ni(OH)₂ and Co(OH)₂ was carried out. The synergetic combination of rGO and Ni(OH)₂ or Co(OH)₂) provides dual charge-storing mechanisms whereas 3D framework of sponge allows excellent accessibility of electrolyte to hybrid electrodes. Moreover, to further increase the energy density, hybrid devices have been fabricated with SP@rGO@Ni or SP@rGO@Co and SP@rGO as positive and negative electrodes, respectively. These hybrid devices operate with extended operating voltage windows and achieve remarkable electrochemical supercapacitive properties which make them truly promising energy storage devices for commercial production.
Grants:	Ministerio de Economía y Competitividad MAT2012-39199-C02-01 Ministerio de Economía y Competitividad SEV-2013-0295
Note:	Altres ajuts: Programa Beatriu de Pinós (BP-DGR-2013)
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Scientific reports, Vol. 4 (December 2014) , art. 7349, ISSN 2045-2322

DOI: 10.1038/srep07349
PMID: 25483007

10 p, 3.0 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles