dc.contributor.author | Díez Nogués, Noel | |
dc.contributor.author | Botas, Cristina | |
dc.contributor.author | Mysyk, Roman | |
dc.contributor.author | Goikolea Núñez, Eider | |
dc.contributor.author | Rojo Aparicio, Teófilo ![ORCID](/themes/Mirage2//images/orcid_16x16.png) | |
dc.contributor.author | Carriazo, Daniel | |
dc.date.accessioned | 2024-02-08T07:45:58Z | |
dc.date.available | 2024-02-08T07:45:58Z | |
dc.date.issued | 2018-01-24 | |
dc.identifier.issn | 2050-7496 | |
dc.identifier.uri | http://hdl.handle.net/10810/64816 | |
dc.description.abstract | The increasing complexity of portable electronics demands the development of energy storage devices with higher volumetric energy and power densities. In this work we report a simple strategy for the preparation of partially reduced graphene oxide/carbon nanotube composites (prGO–CNT) as highly packed self-standing binder-free films suitable as electrodes for supercapacitors. These carbon-based films are easily obtained by the hydrothermal treatment of an aqueous suspension of graphene oxide and CNTs at 210 °C and then compacted under pressure. The prGO–CNT films, which had an apparent density as high as 1.5 g cm−3, were investigated as binder-free electrodes for aqueous supercapacitors using 6 M KOH solution as the electrolyte. The results show that the presence of merely 2 wt% of CNTs produces a significant enhancement of the capacitance retention at high current densities compared to the CNT-free samples, and this improvement is especially relevant in systems formed using electrodes with high mass loadings. Volumetric capacitance values of 250 F cm−3 at 1 A g−1 with outstanding capacitance retention (200 F cm−3 at 10 A g−1) were achieved using the prGO–CNT electrodes with an areal mass loading above 12 mg cm−2. | es_ES |
dc.description.sponsorship | This work was financially supported by the European Union (Graphene Flagship, Core 1) and the Spanish Ministry of Economy and Competitiveness (MINECO/FEDER) (MAT2015-64617-C2-2-R). The authors also thank GRAPHENEA Company for supplying the graphene oxide used in this study. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Royal Society of Chemistry | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/MAT2015-64617-C2-2-R | |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.title | Highly packed graphene–CNT films as electrodes for aqueous supercapacitors with high volumetric performance | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | (c) RSC under a Creative Commons Attribution 3.0 Unported Licence | * |
dc.relation.publisherversion | https://pubs.rsc.org/en/content/articlelanding/2018/ta/c7ta10210k | |
dc.identifier.doi | 10.1039/c7ta10210k | |
dc.departamentoes | Química inorgánica | es_ES |
dc.departamentoeu | Kimika ez-organikoa | es_ES |