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https://hdl.handle.net/1822/46559
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Campo DC | Valor | Idioma |
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dc.contributor.author | Lufrano, Francesco | por |
dc.contributor.author | Vieito, António Jose Paleo | por |
dc.contributor.author | Brigandì, Antonino | por |
dc.contributor.author | Ferreira, Fernando | por |
dc.contributor.author | Rocha, A. M. | por |
dc.contributor.author | Staiti, Pietro | por |
dc.date.accessioned | 2017-10-02T20:37:29Z | - |
dc.date.available | 2017-10-02T20:37:29Z | - |
dc.date.issued | 2017 | - |
dc.identifier.uri | https://hdl.handle.net/1822/46559 | - |
dc.description.abstract | This work is focused on the design and development of hybrid solid-state energy storage devices with high capacitive performance. In particular, the work includes, the preparation of carbon composite electrodes based on a carbon nanofibers (CNF) supported on a cotton fabric. The coating of CNF to the cotton cloth is obtained by the dip and dry method. On these so-obtained composite substrates, further layers of activated carbon (Norit A Supra Eur) and manganese oxide (MnO2) material have been subsequenlty deposited to enhance the electrochemical performances of negative and positive electrodes, respectively. The preparation of carbon-based active layers comprises the spreading on the negative CNF-substrate of a slurry containing the activated carbon (AC) material, graphite fibres and polyvinylidene difluoride (PVDF) in N,N dimethylacetamide (DMA). Whereas the positive electrode is prepared by spreading a slurry of MnO2, carbon black, graphite fibers, PVDF in DMA. A 1M Na2SO4 solution impregnated in the porous paper separator (Nippon Kodoshi Corportion, Japan) and a polymer electrolyte membrane (Nafion 115) have been employed as electrolytes. The different supercapacitors were electrochemically characterized by cyclic voltammetry (CV), galvanostatic charge/discharge (G–CD), electrochemical impedance spectroscopy (EIS) and long-term cycling stability tests. The hybrid carbon-based textile supercapacitors exhibited capacitance performance of 137 and 120 F/g with the porous separator and Nafion 115 membrane, respectively. Specially, the solid-state (Nafion membrane) hybrid device demonstrated very long stability in cycling (10000 cycles) and holding voltage condition at 1.6 V (more than 100 h). Besides, these textile-based capacitors also showed slow self-discharge. | por |
dc.description.sponsorship | This work was partly financed by FEDER funds through the Competitivity Factors Operational Programme - COMPETE and by national funds through FCT – Foundation for Science and Technology (project POCI-01-0145-FEDER-007136). A. J. Paleo acknowledges the European COST Action CA15107- Multi-Functional Nano-Carbon Composite Materials Network (MultiComp) that conceded a Short Term Scientific Mission (STSM) at CNR-ITAE of Messina. | por |
dc.language.iso | por | por |
dc.rights | openAccess | por |
dc.title | Carbon and MnO₂ materials on carbon nanofibers cotton textile substrate for hybrid solid-state supercapacitors | por |
dc.type | panelPresentation | por |
dc.peerreviewed | yes | por |
oaire.citationConferenceDate | 10 July - 14 July 2017 | por |
sdum.event.title | 5th International Symposium on Enhanced Electrochemical Capacitors | por |
sdum.event.type | conference | por |
oaire.citationConferencePlace | Jena, Germany | por |
dc.subject.fos | Engenharia e Tecnologia::Engenharia dos Materiais | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
Aparece nas coleções: | DET/2C2T - Comunicações em congressos internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Abstract ISEECap2017.pdf | 255,55 kB | Adobe PDF | Ver/Abrir |