New synthesis method for a core-shell composite based on α-Bi2O3@PPy and its electrochemical behavior as supercapacitor electrode.
| dc.contributor.author | Xavier, Farlon Felipe Silva | |
| dc.contributor.author | Bruziquesi, Carlos Giovani Oliveira | |
| dc.contributor.author | Fagundes, Wélique Silva | |
| dc.contributor.author | Matsubara, Elaine Yoshiko | |
| dc.contributor.author | Rosolen, Jose Mauricio | |
| dc.contributor.author | Silva, Adilson Cândido da | |
| dc.contributor.author | Canobre, Sheila Cristina | |
| dc.contributor.author | Amaral, Fábio Augusto do | |
| dc.date.accessioned | 2019-04-26T15:18:42Z | |
| dc.date.available | 2019-04-26T15:18:42Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | New composite based on polypyrrole (PPy) and bismuth oxide (α-Bi2O3) was investigated as supercapacitor electrode. The α-Bi2O3 was obtained by hydrothermal route at 500 °C for 2 h. Cyclic voltammetry was used to electropolymerize PPy on graphite electrode (GE) or on GE/α-Bi2O3. The X-ray diffraction profile of Bi2O3 revealed the α-Bi2O3 monoclinic structure with space group P21/c. The scanning and transmission electron microscopy images showed that PPy coated α-Bi2O3. Raman spectra showed that PPy inhomogeneously coated α-Bi2O3, but it was still possible to obtain a α-Bi2O3@PPy core-shell hybrid composite with highly ordered α-Bi2O3 with electronic interaction between the oxide and the polymer chain of the polymer. The GE/α-Bi2O3@PPy composite electrode (type I supercapacitor) displayed a predominantly capacitive profile with low impedance values and good electrochemical stability after 50 charge and discharge cycles. The specific capacitance of α-Bi2O3@PPy composite was found in the range of 634 to 301 F g-1 to gravimetric current of 3 and 10 A g-1, respectively. | pt_BR |
| dc.identifier.citation | XAVIER, F. F. S. et al. New synthesis method for a core-shell composite based on α-Bi2O3@PPy and its electrochemical behavior as supercapacitor electrode. Journal of the Brazilian Chemical Society, São Paulo, v. 30, n. 4, p. 727-735, abr. 2019. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000400727&lng=en&nrm=iso&tlng=en>. Acesso em: 7 mar. 2019. | pt_BR |
| dc.identifier.doi | http://dx.doi.org/10.21577/0103-5053.20180192 | pt_BR |
| dc.identifier.issn | 1678-4790 | |
| dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/11150 | |
| dc.language.iso | en_US | pt_BR |
| dc.rights | aberto | pt_BR |
| dc.rights.license | This is an open-access article distributed under the terms of the Creative Commons Attribution License. Fonte: O próprio artigo | pt_BR |
| dc.subject | Conducting polymers | pt_BR |
| dc.subject | Bismuth oxide | pt_BR |
| dc.subject | Supercapacitors | pt_BR |
| dc.subject | Electrochemical devices | pt_BR |
| dc.title | New synthesis method for a core-shell composite based on α-Bi2O3@PPy and its electrochemical behavior as supercapacitor electrode. | pt_BR |
| dc.type | Artigo publicado em periodico | pt_BR |