| Full text | |
| Author(s): |
Augusto, Gabriel de Souza
[1]
;
Scarminio, Jair
[2]
;
Catarini Silva, Paulo Rogerio
[2]
;
de Siervo, Abner
[3]
;
Rout, Chandra Sekhar
[4]
;
Rouxinol, Francisco
[3]
;
Gelamo, Rogerio Valentim
[1]
Total Authors: 7
|
| Affiliation: | [1] Fed Univ Triangulo Mineiro UFTM, Inst Technol & Exact Sci, BR-38064200 Uberaba, MG - Brazil
[2] State Univ Londrina UEL, Phys Dept, BR-86057970 Londrina, PR - Brazil
[3] Univ Campinas UNICAMP, Gleb Wataghin Inst Phys, BR-13083859 Campinas, SP - Brazil
[4] Jain Univ, Ctr Nano & Mat Sci, Jain Global Campus, Bangalore 562112, Karnataka - India
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Electrochimica Acta; v. 285, p. 241-253, SEP 20 2018. |
| Web of Science Citations: | 12 |
| Abstract | |
We report the development of flexible self-supported metal-free electrodes based on non-oxidized graphene multilayer (MLG) paper, utilized to assemble bendable electrochemical supercapacitors. Using a simplified production method various electrodes exhibiting high conductivity were prepared and its structural, morphological, chemical and electrical properties characterized. Measurements in supercapacitors assembled from MLG electrodes and PANI-coated MLG electrodes show excellent electrochemical characteristics, with specific capacitances of 58 mF cm(-2) and 451 F g(-1) with 84% and 103% of capacitance retention after 1000 cycles, respectively. The energy and power density obtained for the PANI/MLG flexible supercapacitor reached 17.0 Wh g(-1) and 3.61 kW kg(-1), respectively. Moreover, in bending tests, the supercapacitors displayed an excellent mechanical and electrochemical stability. As an important result of this study, MLG electrodes appear as an interesting material for flexible high performance energy storage devices. (C) 2018 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 17/08602-0 - Development of quantum superconducting devices to observe quantum states of motion with an hybrid quantum electromechanical system |
| Grantee: | Francisco Paulo Marques Rouxinol |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 07/54829-5 - Electronic and geometric structure of nano-materials: synchrotron radiation studies |
| Grantee: | Richard Landers |
| Support Opportunities: | Research Projects - Thematic Grants |