visitant ::
identificació
|
|||||||||||||||
Cerca | Lliura | Ajuda | Servei de Biblioteques | Sobre el DDD | Català English Español |
Pàgina inicial > Articles > Articles publicats > Electroactive graphene nanofluids for fast energy storage |
Data: | 2016 |
Resum: | Graphenes have been extensively studied as electrode materials for energy storage in supercapacitors and batteries, but always as solid electrodes. The conception and development of graphene electroactive nanofluids (ENFs) reported here for the first time provides a novel way to 'form' graphene electrodes and demonstrates proof of concept for the use of these liquid electrodes for energy storage in novel flow cells. Astabilized dispersion of reduced graphene oxide (rGO) in aqueous sulfuric acid solution was shown to have capacitive energy storage capabilities parallel to those of solid electrode supercapacitors (169 F g(rGO)) but working up to much faster rates (from 1mV s to the highest scan rate of 10 V s) in nanofluids with 0. 025, 0. 1 and 0. 4 wt% rGO, featuring viscosities very close to that of water, thus being perfectly suitable for scalable flow cells. Our results provide proof of concept for this technology and include preliminary flow cell performance of rGO nanofluids under static and continuous flow conditions. Graphene nanofluids effectively behave as true liquid electrodes with very fast capacitive storage mechanism and herald the application not only of graphenes but also other 2D materials like MoS in nanofluids for energy storage and beyond. |
Ajuts: | Ministerio de Economía y Competitividad SEV-2013-0295 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1505 Ministerio de Economía y Competitividad MAT2015-68394-R |
Nota: | Altres ajuts: Programa Beatriu de Pinós (BP-DGR-2013) |
Drets: | 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. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Electroactive nanofluids ; Energy storage ; Flow cells ; Graphene nanofluids ; Nanoelectrofuels ; Reduced graphene oxide sols ; Supercapacitors |
Publicat a: | 2D Materials, Vol. 3, Núm. 3 (September 2016) , art. 31004, ISSN 2053-1583 |
6 p, 2.6 MB |