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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

High-performance energy storage of poly (o-methoxyaniline) film using an ionic liquid as electrolyte

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Christinelli, W. A. [1] ; da Trindade, L. G. [1] ; Trench, A. B. [1] ; Quintans, C. S. [1] ; Paranhos, C. M. [1] ; Pereira, E. C. [1]
Total Authors: 6
[1] Univ Fed Sao Carlos, Chem Dept, CP 676, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: ENERGY; v. 141, p. 1829-1835, DEC 15 2017.
Web of Science Citations: 3

Different materials have been proposed as active electrode in electrochemical capacitors, including conducting polymers. Among them, several papers describe the use of polyaniline and its derivatives for such purpose. However, the use of poly(o-methoxyaniline), a polyaniline derivative, in ionic liquid electrolytes as pseudocapacitors has never been proposed in the literature. Therefore, the objective of this work is to investigate the electrochemical properties and stability of POMA casting film in ionic liquid electrolyte as electrode for supercapacitors. Cyclic voltammetry and galvanostatic charge/discharge experiments have been used to analyze the behavior of the films. The results show that POMA films have high specific capacitance and good electrochemical stability during 3000 cycles. Its initial value is 260 F g(-1) in a mixture of ionic liquid and polyethylene glycol (80:20 v/v). The specific energy shows 70% retention from the initial value after 3000 cycles. Furthermore, the specific power remains remarkably stable during 3000 cycles, as well as the coulombic efficiency, which is about 99%. For these reasons this work opens up the possibilities of using conducting polymers in ionic liquids and illustrates its good behavior and stability for supercapacitor application. (C) 2017 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 16/05363-2 - Electrochemistry at the nanoscale: biomimetic electrocatalysis and molecular electronics using bimetallic complexes of expanded porphyrins
Grantee:Ciro Scheremeta Quintans
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 11/10897-2 - Characterization of the redox and ageing processes in self assembled films of conducting polymers
Grantee:Wania Aparecida Christinelli
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)