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Ternary Hybrid Materials of Graphenes, Polyaniline and Hexaniobates for Supercapacitor Electrodes: Spectroscopic, Morphological, Electrochemical and Thermal Characterizations

Grant number: 13/03013-6
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): August 01, 2013
Effective date (End): July 31, 2017
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal Investigator:Marcia Laudelina Arruda Temperini
Grantee:Claudio Hanashiro Barbosa Silva
Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):14/05048-4 - Ternary hybrid materials of Graphenes, polyaniline and Hexaniobates: new materials for supercapacitor electrodes, BE.EP.PD


Electrochemical capacitors, also known as supercapacitor, are promising devices for energy storage due to the extremely higher power densities and good charge/discharge cycle stabilities comparing with other devices such as nickel-metal hydride and lithium-ion batteries. The recent scientific effort relies on the development of materials which show improved energy densities. Ternary hybrid materials composed by carbon based-materials, conducting polymers and metal oxides have showed high performances as supercapacitors. The main goal of this project is the spectroscopic, morphological, electrochemical and thermal characterizations of ternary hybrid materials of graphenes, polyaniline and hexaniobates as supercapacitor electrodes. The synthetic, structural and morphological aspects of the hybrid materials will be correlated to the electrochemical performances. The hybrid materials will be characterized by resonance Raman, electron paramagnetic resonance and X-ray photoelectron spectroscopies, scanning and transmission electronic microscopies, X-ray diffraction, cyclic voltametry, galvanostatic charge/discharge cycles, and mass spectrometry-coupled thermogravimetric analysis. The candidate intends to improve the electrochemical characterization during a research internship abroad in the Blaise Pascal University at Clermont-Ferrand (France), under the supervision of Prof. Dr. Fabrice Leroux. The project for the research internship abroad fellowship (BEPE) will be submitted on due date.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SILVA, CLAUDIO H. B.; ILIUT, MARIA; MURYN, CHRISTOPHER; BERGER, CHRISTIAN; COLDRICK, ZACHARY; CONSTANTINO, VERA R. L.; TEMPERINI, MARCIA L. A.; VIJAYARAGHAVAN, ARAVIND. Ternary nanocomposites of reduced graphene oxide, polyaniline and hexaniobate: hierarchical architecture and high polaron formation. BEILSTEIN JOURNAL OF NANOTECHNOLOGY, v. 9, p. 2936-2945, . (11/50318-1, 13/03013-6, 12/13119-3, 14/05048-4)

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