@Article{AlmeidaEdwaFerr:2018:MoStEl,
author = "Almeida, Dalva Alves de Lima and Edwards, Elilton Rodrigues and
Ferreira, Neiden{\^e}i Gomes",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Self-sustaining hybrid electrode prepared from polyaniline, carbon
nanotubes, and carbon fibers: morphological, structural, and
electrochemical analyses",
journal = "Journal of Solid State Electrochemistry",
year = "2018",
volume = "22",
number = "1",
pages = "69--80",
month = "jan.",
keywords = "Carbon fiber, Carbon nanotube, Polyaniline, Composites,
Supercapacitors.",
abstract = "The self-sustaining hybrid electrode was prepared via chemical
polymerization of aniline in acid medium containing dispersed
carbon nanotubes (CNT), using carbon fiber (CF) as conducting
substrate. The ternary composites called PAni/CNT/CF were
characterized in order to evaluate their morphologies, structures,
and thermal properties. The influence of the polyaniline (PAni)
layer in the ternary composite properties was studied considering
different deposition times on CF samples (30, 60, and 90 min). The
ternary composite morphologies were observed by scanning electron
microscopy while thermal structural analyses were obtained using
thermogravimetric measurements. The structural features were
analyzed by Raman scattering spectroscopy and Fourier transform
infrared spectroscopy (FTIR). The possible interactions between
PAni and CNT were discussed on the basis of Raman and FTIR
spectra. These spectroscopic analyses also confirmed that the PAni
present in the composite is in the emeraldine (ES) salt form.
Furthermore, the ternary composites were also evaluated by
electrochemical measurements such as cyclic voltammetry (CV),
galvanostatic chargedischarge, and electrochemical impedance
spectroscopy (EIS) techniques. The results showed good charge
storage capacity for ternary composites, in particular, for
PAni/CNT/CF obtained with 90 min of deposition time, which
exhibited specific capacitance of around 500 F g\−1 .
Therefore, this electrode was selected to build a prototype of
type I supercapacitor. This device presented specific capacitance
of around 143 F g\−1 after 3200 charge/discharge cycles.",
doi = "10.1007/s10008-017-3722-0",
url = "http://dx.doi.org/10.1007/s10008-017-3722-0",
issn = "1432-8488",
language = "en",
targetfile = "almeida_self.pdf",
urlaccessdate = "03 jun. 2024"
}