Síntese e caracterização de supercapacitores de óxido de grafeno (GO) e óxido de grafeno reduzido (RGO)

Daysianne Kessy Mendes Isidorio; Matheus Emerick de Magalhães; Antonio Augusto Martins Pereira Júnior; Clícia Joanna Neves Fonseca; Belayne Zanini Marchi; Pablo Henrique Ataíde Oliveira; Filipe de Almeida Araújo; Leandra Altoé

doi:10.18540/jcecvl9iss1pp15417-01e

Authors

Daysianne Kessy Mendes Isidorio Universidade Federal do Rio de Janeiro, UFRJ, Brasil https://orcid.org/0000-0002-8128-4230
Matheus Emerick de Magalhães Universidade Federal do Rio de Janeiro, UFRJ, Brasil https://orcid.org/0000-0003-3820-4124
Antonio Augusto Martins Pereira Júnior Universidade Federal do Rio de Janeiro, UFRJ, Brasil https://orcid.org/0000-0003-2265-952X
Clícia Joanna Neves Fonseca Instituto Militar de Engenharia, IME, Brasil https://orcid.org/0000-0003-2912-8414
Belayne Zanini Marchi Instituto Militar de Engenharia, IME, Brasil https://orcid.org/0000-0003-4497-6008
Pablo Henrique Ataíde Oliveira Instituto Militar de Engenharia, IME, Brasil https://orcid.org/0000-0001-8311-8917
Filipe de Almeida Araújo Instituto Militar de Engenharia, IME, Brasil https://orcid.org/0000-0003-4402-5982
Leandra Altoé Universidade Federal do Espírito Santo, UFES, Brasil https://orcid.org/0000-0002-4456-6888

DOI:

https://doi.org/10.18540/jcecvl9iss1pp15417-01e

Keywords:

Supercapacitors, Graphene, Energy

Abstract

Supercapacitors are devices that accumulate electrical energy and have a long-life cycle, high power density and low weight. Despite these properties, they have low capacitance and energy density compared to other devices. To advance the applicability of supercapacitors, it is necessary to develop electrode materials that store a greater amount of energy. With the objective of analyzing the electrochemical properties of new materials applied in supercapacitors. Supercapacitors based on graphene oxide (GO) and reduced graphene oxide (RGO) were developed in this work. GO and RGO morphologies were analyzed by scanning electron microscopy (SEM) and chronoamperometry (AC) and cyclic voltammetry (VC) tests to evaluate the electrochemical performance of supercapacitors. The SEM test results showed that the GO used in the experiment had a porous structure and low crystallinity. According to the test results both supercapacitors have similar capacitance characteristics.