Interfacial characterization and supercapacitive behavior of PEDOT nanotubes modified electrodes

Autor(es)

Hryniewicz, Bruna M. ^[1] ; Winnischofer, Herbert ^[1] ; Vidotti, Marcio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Parana, Dept Quim, Grp Pesquisa Macromol & Interfaces, CP 19032, BR-81531980 Curitiba, Parana - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 823, p. 573-579, AUG 15 2018.
• Citações Web of Science: 2

Resumo

PEDOT nanotubes were chemically synthesized using a hexane/water reverse microemulsion polymerization and deposited onto ITO substrate. FTIR polarized specular reflectance spectra are consistent with AOT molecules organized inside the PEDOT nanotubes. The electrochemical properties of PEDOT nanotubes were evaluated by cyclic voltammetry and electrochemical impedance spectroscopy in comparison with PEDOT:PSS modified electrodes. The results indicates an increase in the capacitance and a decrease in the charge transfer resistance for the PEDOT nanotubes in comparison with PEDOT:PSS films due to the higher exposure of the electroactive sites in the nanostructured material. Galvanostatic charge/discharge curves were performed and a maximum specific capacitance of 160 F.g(-1) was revealed, indicating that this material has potential to be used in supercapacitors development. (AU)

• Processo FAPESP: 14/50867-3 - INCT 2014: Instituto Nacional de Ciência e Tecnologia de Bioanalítica
• Beneficiário: Marco Aurelio Zezzi Arruda
• Modalidade de apoio: Auxílio à Pesquisa - Temático