Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Mixed solid device based on conducting polymer composite and polymer electrolyte

Full text
Author(s):
Silmara Neves [1] ; Carla P. Fonseca [2]
Total Authors: 2
Affiliation:
[1] Universidade São Francisco. Unidade Acadêmica de Ciências Exatas e Tecnológicas. Laboratório de Caracterização e Aplicação de Materiais - Brasil
[2] Universidade São Francisco. Unidade Acadêmica de Ciências Exatas e Tecnológicas. Laboratório de Caracterização e Aplicação de Materiais - Brasil
Total Affiliations: 2
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 15, n. 3, p. 395-399, 2004-06-00.
Abstract

Tetraethyl orthosilicate (TEOS) derived sol-gel porous films have been utilized as template for the electrochemical polymerization of aniline. Polyaniline-silica composites were obtained and the redox behavior and charge/discharge capacities of a lithium polymeric battery using poly (dimethylsiloxane- co-ethylene oxide) as gel polymeric electrolyte, were investigated. The composite presented a high initial capacity (140 mA h g-1) and a reversible capacity of 75 mA h g-1 after 100 charge/discharge cycles. The decrease in the specific capacity was attributed to an increase in charge transfer resistance and a decrease in the diffusion coefficient measured by electrochemical impedance spectroscopy. (AU)