| Texto completo | |
| Autor(es): Mostrar menos - |
de Souza, Luiz K. C.
[1]
;
Martins, Joao Carlos
[1, 2]
;
Oliveira, Diogo Padilha
[1, 2]
;
Ferreira, Carlos Sergio
[1, 2]
;
Goncalves, Alexandre A. S.
[3]
;
Araujo, Rayanne O.
[1, 2]
;
da Silva Chaar, Jamal
[1, 2]
;
Costa, Maria J. F.
[4]
;
Sampaio, David V.
[5]
;
Passos, Raimundo R.
[1, 2]
;
Pocrifka, Leandro A.
[1, 2]
Número total de Autores: 11
|
| Afiliação do(s) autor(es): | [1] Univ Fed Amazonas, Dept Chem, Manaus, Amazonas - Brazil
[2] Sampaio, David V., Univ Fed Sao Carlos, Dept Phys, Sao Carlos, SP, Brazil.de Souza, Luiz K. C., Univ Fed Amazonas, Dept Chem, Manaus, Amazonas - Brazil
[3] Kent State Univ, Dept Chem & Biochem, Kent, OH 44242 - USA
[4] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Mat Engn, Sao Carlos, SP - Brazil
[5] Univ Fed Sao Carlos, Dept Phys, Sao Carlos, SP - Brazil
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 31, n. 15 JUN 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
Creating energy storage devices from biomass waste has great scientific and industrial significance by providing an eco-friendly and sustainable alternative to reuse biowaste. This study demonstrates the production of high-performance supercapacitor electrodes using acai seed as a precursor for creating carbon materials. Porous carbons were synthesized by carbonization and subsequent KOH activation to generate microporosity then mesoporosity upon further activation. The materials displayed large specific surface areas and total pore volumes, with tunable pore structures depending on the degree of activation. The biomass-derived electrodes exhibited high specific capacitances of 346 F g(-1)at 1 mA cm(-2)and good electrochemical stability in which 88% of the initial capacitance was retained after 5000 charges/discharges cycles at 7 mA cm(-2)in 1 M KOH electrolyte. These results place these materials among the best biomass-derived supercapacitors reported thus far. This study provides a great alternative for the management of the large-scale biowaste, acai seed. (AU) | |
| Processo FAPESP: | 16/15962-0 - Correlação entre estrutura e propriedades dinâmicas e ópticas de materiais da série (Ax, A'1-x)O + SiO2 (A, A' = Pb, Ni, Co, Fe, Cr): estudo por espalhamento Raman e simulações por dinâmica molecular |
| Beneficiário: | David Vieira Sampaio |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 16/14165-0 - Cerâmicas meso/macroporosas para conversão catalítica de biomassa lignocelulósica em produtos químicos de interesse industrial |
| Beneficiário: | Maria José Fonseca Costa |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |