Application of New Materials as Electrodes in Flexible Supercapacitors

• Grant number: 21/03379-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: December 01, 2021
• End date: July 31, 2026
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Carlos Frederico de Oliveira Graeff
• Grantee: João Victor Morais Lima
• Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil
• Associated research grant: 13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID
• Associated scholarship(s): 23/14464-0 - Melanin as additive in hydrogel electrolytes for application in supercapacitors, BE.EP.DR

Abstract

One of the main challenges in the development of supercapacitors (SCs) is the construction of flexible devices with high energy density. One of the ways to obtain greater energy densities is by applying materials to the electrode that causes the device to have high capacitance and wide potential window. Therefore, the objective of this research is the application of new materials, developed at the New Materials and Devices Laboratory (LNMD) and by its collaborators, as electrodes in flexible supercapacitors, targeting devices with high energy density. Some of the materials that will be studied will be melanin, melanin blends with conductive polymers, multiwalled carbon nanotubes and Mesoporous Niobium Pentoxide (Nb2O5). The devices prepared in the configuration planar and sandwich, and with symmetrical and asymmetric electrodes. The deposited materials will be morphologically characterized by confocal microscopy and electron microscopy of scan. The devices will be characterized electrically through voltammetry measurements cyclic, galvanostatic charge-discharge and impedance spectroscopy. Capacitance values, energy density, power density and series resistance will be chosen for the devices, in order to compare with results obtained in the literature and improve their performance.

Scientific publications

(8)

(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)

BORATTO, MIGUEL H.; LIMA, JOAO V. M.; MALLIARAS, GEORGE G.; GRAEFF, CARLOS F. O.. Supercapacitor auto analyser: An automated data analysis software for supercapacitor characterization. JOURNAL OF ENERGY STORAGE, v. 63, p. 9-pg., 2023-03-30. (17/20809-0, 20/04721-8, 21/03379-7, 20/12356-8)

BATAGIANNI, ELEFTHERIA; DOAT, OLIVIER; ELISSALT, NICOLAS; BOUASSA, DOUVOTSU ELISA MOUNGADJI; BITTENCOURT, JESSYKA CAROLINA; GONCALVES, GABRIEL CARDOSO; MORENO, VITOR FERNANDES; LIMA, JOAO VICTOR MORAIS; NOGUEIRA, GABRIEL LEONARDO; AFFONCO, LUCAS JORGE; et al. Radical and Environmentally Friendly Route to Poly(fullerene)s Incorporating C₆₀, C₇₀, and PCBM. MACROMOLECULES, v. 58, n. 3, p. 19-pg., 2025-01-22. (20/12356-8, 23/12686-6, 13/07296-2, 21/03379-7)

GUERRA, NAYRIM BRIZUELA; LIMA, JOAO VICTOR MORAIS; PAULIN, JOAO VITOR; NOZELLA, NATAN LUIZ; BORATTO, MIGUEL HENRIQUE; NOGUEIRA, GABRIEL LEONARDO; BUFON, CARLOS CESAR BOF; GRAEFF, CARLOS FREDERICO DE OLIVEIRA. Electrochemical behavior of non-functionalized and sulfonated melanins at different pH values. Polymer International, v. 73, n. 11, p. 9-pg., 2024-07-12. (20/15869-6, 17/20809-0, 22/00410-3, 21/09207-3, 20/04721-8, 21/03379-7, 14/25979-2)

MOSTERT, A. B.; MATTIELLO, S.; LI, S.; PERNA, G.; LASALVIA, M.; AMBRICO, P. F.; PAULIN, J. V.; LIMA, J. V. M.; GRAEFF, C. F. O.; PHUA, J. W.; et al. Exploring the chemistry and composition of black soldier fly eumelanin, a material for a circular economy. MATERIALS ADVANCES, v. 5, n. 22, p. 14-pg., 2024-10-28. (13/07296-2, 21/03379-7)

ASSUNCAO, JOAO PEDRO F.; LEMOS, HUGO G.; ROSSATO, JESSICA H. H.; NOGUEIRA, GABRIEL L.; LIMA, JOAO V. M.; FERNANDES, SILVIA L.; NISHIHORA, RAFAEL K.; FERNANDES, RICARDO V.; LOURENCO, SIDNEY A.; BAGNIS, DIEGO; et al. Interface passivation with Ti₃C₂T_x-MXene doped PMMA film for highly efficient and stable inverted perovskite solar cells. JOURNAL OF MATERIALS CHEMISTRY C, v. 12, n. 2, p. 13-pg., 2023-11-28. (20/12356-8, 20/16470-0, 21/03379-7, 22/10998-8, 13/07296-2, 19/22183-6, 20/15632-6)

LEMOS, HUGO G. G.; ROSSATO, JESSICA H. H.; RAMOS JR, ROBERTO A. A.; LIMA, JOAO V. M.; AFFONCO, LUCAS J. J.; TROFIMOV, SERGEI; MICHEL, JOSE J. I.; FERNANDES, SILVIA L. L.; NAYDENOV, BORIS; GRAEFF, CARLOS F. O.. Electron transport bilayer with cascade energy alignment based on Nb2O5-Ti3C2 MXene/TiO2 for efficient perovskite solar cells. JOURNAL OF MATERIALS CHEMISTRY C, v. N/A, p. 10-pg., 2023-01-31. (13/07296-2, 20/12356-8, 20/16470-0, 21/03379-7)

NOZELLA, NATAN LUIS; LIMA, JOAO VICTOR MORAIS; DE OLIVEIRA, RAFAEL FURLAN; GRAEFF, CARLOS FREDERICO DE OLIVEIRA. Melanin/PEDOT:PSS blend as organic mixed ionic electronic conductor (OMIEC) for sustainable electronics. MATERIALS ADVANCES, v. N/A, p. 12-pg., 2023-09-13. (22/00410-3, 21/03379-7, 13/07296-2, 20/12356-8, 21/06238-5)

GUERRA, NAYRIM BRIZUELA; LIMA, JOAO VICTOR MORAIS; NOZELLA, NATAN LUIS; BORATTO, MIGUEL HENRIQUE; PAULIN, JOAO VITOR; GRAEFF, CARLOS FREDERICO DE OLIVEIRA. Electrochemical Doping Effect on the Conductivity of Melanin-Inspired Materials. ACS APPLIED BIO MATERIALS, v. 7, n. 4, p. 11-pg., 2024-03-11. (20/15869-6, 21/09207-3, 13/07296-2, 22/00410-3, 21/03379-7, 17/20809-0, 20/04721-8)