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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Ragone Plots for Electrochemical Double-Layer Capacitors

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Autor(es):
Vicentini, Rafael [1] ; Aguiar, Joao Pedro [1] ; Beraldo, Renato [1] ; Venancio, Raissa [1] ; Rufino, Fernando [1] ; Da Silva, Leonardo M. [2] ; Zanin, Hudson [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Elect & Comp Engn, Mfg Grp, Adv Energy Storage Div, Ctr Innovat New Energies, Av Albert Einstein 400, BR-13083852 Campinas, SP - Brazil
[2] Fed Univ Jequitinhonha & Mucuris Valley, Lab Fundamental & Appl Electrochem, Dept Chem, Rodovia MGT 367, Km 583, 5000, BR-39100000 Diamantina, MG - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: BATTERIES & SUPERCAPS; v. 4, n. 8, p. 1291-1303, AUG 2021.
Citações Web of Science: 0
Resumo

The Ragone plot (RP) compares devices in energy and power density characteristics, helping engineers decide on a specific energy storage system for technological applications. RP would contrast the performance of several technologies together under similar boundary conditions. Unfortunately, that is not what is happening for electrochemical double-layer capacitors (EDLCs) because conditions for calculating energy and power are not standardized in the literature, resulting in severe discrepancies in the obtained values. With this widespread misconception, RP may become an unreliable tool for characterizing EDLCs. An intervention in this vital issue now becomes necessary. To put action on that, a rational strategy for dealing with measurements needed for EDLCs and calculations to prepare a reliable RP is reported here. This manuscript presents a step-by-step procedure to provide a correct RP. Also, simple theoretical demonstrations of how to get each fundamental equation are presented. In general, this work contributes as a guide to obtain reliable RPs for EDLCs. (AU)

Processo FAPESP: 17/11958-1 - Divisão para armazenamento de energia avançado
Beneficiário:Rubens Maciel Filho
Linha de fomento: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
Processo FAPESP: 14/02163-7 - Desenvolvimento de dispositivos supercapacitores a partir de grafenos, nanotubos de carbono e diamantes
Beneficiário:Hudson Giovani Zanin
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores