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Development of supercapacitor devices from 2D and 3D nanomaterial electrodes: graphene, MXenes and metal nanooxides


Electric energy matrices, in an accelerated way, go through transformations in the processes of storage and generation of energy with express requirements of sustainability, changes in raw materials and innovations. These paradigm shifts are to meet a new phase of technological demands in health, education, communication, mobility, from generations 4.0 and 5.0 that culminate in growing digitization, cybernetics, internet of things, artificial intelligence, 5G, 6G fast internet networks. To support the operation of these integrated systems, from small electronic circuits to high power motors operating on grid or off grid, there is a technological race for the production of energy accumulators.These storage devices are also part of the electrification process of the industrial and mobility sector. Supercapacitors are devices capable of storing and releasing a large amount of energy in a short time for long life cycles, thus completely or redundantly supplying electrical and electronic circuits from low to high power. They are composed of electrodes made of materials that exhibit high electrochemical performance and the ability to store and transport charges, such as conductive polymers, graphene, carbon and its derivatives, two-dimensional nanomaterials such as MXenes, transition metal oxides. In order to contribute to the technological advancement of the energy generation sector, this proposal objective to obtain and characterize the morphological, structural and electrochemical properties of these high performance materials for the formation of electrodes in energy storage devices. These supercapacitor devices will be part of mockups that will power simple electronic circuits and low-power motors, as a proof of concept. (AU)

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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)
DE ARRUDA, MILENA NAKAGAWA; PALLEY, BIANCA FORTES; DE SOUZA, GUSTAVO FREITAS; LOPEZ, LIGIA; PONTES, MARCELO ANDRE PETRY; FERNANDES, WILLIANS PRINCIPE; GANDARA, MERIENE; MACHADO, FRANCISCO BOLIVAR CORRETO; FERRAO, LUIZ FERNANDO DE ARAUJO; GONCALVES, EMERSON SARMENTO. Physicochemical characterization of a low-oxygen composite based on chitosan and electrochemically exfoliated graphene. Materials Chemistry and Physics, v. 306, p. 10-pg., . (22/16385-8, 17/17661-0, 22/02737-0, 22/02347-7)
GRAVES, DAVID A.; THEODOROVIEZ, LUCAS B.; DE OLIVEIRA, THAIS C.; CIVIDANES, LUCIANA S.; FERREIRA, NEIDENEI G.; ALMEIDA, DALVA A. L.; GONCALVES, EMERSON S.. Enhanced electrochemical properties of polyaniline (PANI) films electrodeposited on carbon fiber felt (CFF): Influence of monomer/acid ratio and deposition time parameters in energy storage applications. Electrochimica Acta, v. 454, p. 11-pg., . (17/17661-0, 21/04427-5, 22/02737-0, 19/27394-5)
ASSUNCAO, A. L. C.; SANCHES, R. M.; GONCALVES, E. S.. Effects of exfoliated graphite addition in ultra-trace concentration on industrial-scale lead-acid battery performance. JOURNAL OF ENERGY STORAGE, v. 58, p. 14-pg., . (22/02737-0, 19/27394-5)

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