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Title: Carbon nanotube/dendrimer hybrids as electrodes for supercapacitors.
Authors: Trigueiro, João Paulo Campos
Figueiredo, Rute Cunha
Rojo Marcos, Francisco Javier
Viana, Renato Márcio Ribeiro
Schnitzler, Mariane Cristina
Silva, Glaura Goulart
Keywords: Glycodendrimers
Ionic liquid
Issue Date: 2016
Citation: TRIGUEIRO, J. P. C. et al. Carbon nanotube/dendrimer hybrids as electrodes for supercapacitors. Journal of Solid State Electrochemistry, v. 20, p. 1991-2000, 2016. Disponível em: <>. Acesso em: 05 ago. 2017.
Abstract: Carbon nanotubes (CNTs) were surface-modified by a glycodendrimer with four glucose units (4-Gl). Electrodes for supercapacitors based on CNT/4-Gl hybrids were used for the first time in this work. The preparation was conducted by casting eight alternating bilayers of two types of modified multiwalled carbon nanotubes (MWCNTs), MWCNT-COOH/4-Gl and MWCNT-NH2/4- Gl, from aqueous dispersions (pH= 6). The electrodes showed good cohesion, dimensional stability, and a homogeneous nanoscale structure because the carbon nanotube/dendrimer layers interact electrostatically. The supercapacitor was stacked with a separator embedded with a 1-ethyl-3- methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid electrolyte. The device with 20 wt% of dendrimer with respect to CNT content in the electrodes achieved a remarkable increase of 600 % in capacitance compared with the capacitance without the dendrimer.
ISSN: 1433-0768 
Appears in Collections:DEQUI - Artigos publicados em periódicos

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