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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.)

The effect of alkyl chain of the imidazolium ring on the poly(o-methoxyaniline)/ionic liquid supercapacitor performance

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da Trindade, L. G. [1, 2] ; Christinelli, W. A. [3] ; Zanchet, L. [2] ; Coelho, D. [1] ; Trench, A. B. [1] ; Martini, Emilse M. A. [2] ; Correa, Daniel S. [3] ; Mattoso, Luiz H. C. [3] ; Pereira, E. C. [1]
Total Authors: 9
[1] Univ Fed Sao Carlos, Chem Dept, CP 676, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Rio Grande do Sul, Inst Chem, Av Bento Goncalves 9500, POB 15003, BR-91501970 Porto Alegre, RS - Brazil
[3] Embrapa Instrumentat, Nanotechnol Natl Lab Agr LNNA, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Solid State Electrochemistry; v. 23, n. 4, p. 1109-1119, APR 2019.
Web of Science Citations: 1

New materials can be developed using a known compound with enhanced properties modifying and controlling its microstructure, morphology, and density of defects. In this work, a new material was produced by the addition of ionic liquid (IL) to the poly(o-methoxyaniline) (POMA) conductive polymer, in the form of esmeraldine salt. The polymer impregnated with IL was tested as an electrode for use in supercapacitors. The results show that the charge storage properties of the materials are dependent on the length of the alquil substituent of imidazolium ring of ionic liquid cation. The best results, obtained by the addition of 1-butyl-3-methylimidazolium triflate IL to the polymer, improved electrical charge storage and electrochemical stability, making the material a promising electrode for supercapacitor devices. This compound has specific capacitance of 205F/g, five times larger than pure POMA and was stable for 3000cycles of charge/discharge experiments carried out at 1.0A/g. (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)