Hybrid polythiophene-clay exfoliated nanocomposites for ultracapacitor devices
Visualitza/Obre
hybrid.pdf (1,752Mb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Cita com:
hdl:2117/16668
Tipus de documentArticle
Data publicació2012-06-14
Condicions d'accésAccés restringit per política de l'editorial
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Exfoliated nanocomposites of poly(3,4-ethylenedioxythiophene) (PEDOT) and montmorillonite
(MMT) have been prepared by in situ anodic polymerization, concentrations of clay ranging from 5%
w/w to 50% w/w being included in the aqueous polymerization medium. The morphology, electrical
conductivity, adherence, thermal stability, charge storage, specific capacitance, electrostability, doping
level and band gap have been determined for the different PEDOT–MMT nanocomposites and
compared with those of pristine PEDOT. Many of these properties have been found to depend on both
the concentration of clay and the thickness (micrometric or nanometric) of the generated films. Types I
and II ultracapacitors have been fabricated using nanometric and micrometric films of PEDOT and
PEDOT–MMT. The properties of such devices have been characterized and compared with those
reported in the literature for ultracapacitors fabricated using nanocomposites of PEDOT and other
inorganic materials. Both nanometric and micrometric type II ultracapacitors, which correspond to an
asymmetric configuration of PEDOT and PEDOT–MMT films, have been found to present the better
properties (e.g. the specific capacitance for nanometric and micrometric devices is 429 and 116 F g 1,
respectively), evidencing the favorable effect of the clay. Finally, the effects of the electrochemicaldegradation on the ultracapacitors have been rationalized using electrochemical impedance
spectroscopy.
CitacióAradilla, D. [et al.]. Hybrid polythiophene-clay exfoliated nanocomposites for ultracapacitor devices. "Journal of materials chemistry", 14 Juny 2012, vol. 22, núm. 26, p. 13110-13122.
ISSN0959-9428
Versió de l'editorhttp://pubs.rsc.org/en/content/articlepdf/2012/jm/c2jm31372c
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
hybrid.pdf | 1,752Mb | Accés restringit |