NDLI: Carbon nanotubes/carbon xerogel-nafion electrodes: a comparative study of preparation methods

Content Provider	Springer Nature Link
Author	Ordeñana Martínez, A. S. Rincón, M. E. Vargas, M. Estrada Vargas, A. Casillas, N. Bárcena Soto, M. Ramos, E.
Copyright Year	2012
Abstract	We report the preparation and electrochemical characterization of carbon nanotubes (CNT)/carbon xerogel-nafion (CXN) electrodes obtained by casting carbon nanotube inks on carbon xerogel-nafion matrixes under terrestrial (g) and enhanced (13 g) gravity. The impregnated electrodes were compared with composites prepared by mixing CXN dispersions with CNT inks. For casted CNT, alternate current scanning electrochemical microscopy studies along the film-electrode area showed differences that can be correlated with the position of the electronic conducting CNT phase on the more resistive matrix. It revealed the transition from a conductive to dielectric surface when impregnation takes place at terrestrial and enhanced gravity, respectively. Although the addition of CNT enhances the capacitance and mechanical properties of CXN in all preparation methods, the largest specific capacitance was observed in electrodes impregnated at 1 g. Electrodes prepared by mixing and those casted at 13 g show similar capacitance values regardless of contrasting conductivity. A mechanism explaining the microstructural, electrical, and adsorptive differences brought out by the various preparation methods is proposed.
Starting Page	3777
Ending Page	3782
Page Count	6
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	16
Issue Number	12
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-07-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon nanotubes Cast Porous materials Nanocomposites Energy storage Characterization and Evaluation of Materials Analytical Chemistry Condensed Matter Physics Energy Storage Physical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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