| Full text | |
| Author(s): |
Daniele, Giovanni G.
;
de Souza, Daniel C.
;
de Oliveira, Paulo Roberto
;
Orzari, Luiz O.
;
Blasques, Rodrigo V.
;
Germscheidt, Rafael L.
;
da Silva, Emilly C.
;
Pocrifka, Leandro A.
;
Bonacin, Juliano A.
;
Janegitz, Bruno C.
Total Authors: 10
|
| Document type: | Journal article |
| Source: | C-JOURNAL OF CARBON RESEARCH; v. 8, n. 2, p. 14-pg., 2022-06-01. |
| Abstract | |
A novel flexible supercapacitor device was developed from a polyethylene terephthalate substrate, reused from beverage bottles, and a conductive ink based on carbon black (CB) and cellulose acetate (CA). The weight composition of the conductive ink was evaluated to determine the best mass percentage ratio between CB and CA in terms of capacitive behavior. The evaluation was performed by using different electrochemical techniques: cyclic voltammetry, obtaining the highest capacitance value for the device with the 66.7/33.3 wt% CB/CA in a basic H2SO4 solution, reaching 135.64 F g(-1). The device was applied in potentiostatic charge/discharge measurements, achieving values of 2.45 Wh kg(-1) for specific energy and around 1000 W kg(-1) for specific power. Therefore, corroborated with electrochemical impedance spectroscopy assays, the relatively low-price proposed device presented a suitable performance for application as supercapacitors, being manufactured from reused materials, contributing to the energy storage field enhancement. (AU) | |
| FAPESP's process: | 17/23960-0 - Study of the mechanism of water oxidation by catalysts operating at pH7 and its incorporation in electrodes printed in 3D |
| Grantee: | Juliano Alves Bonacin |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country |
| Grantee: | Ana Flávia Nogueira |
| Support Opportunities: | Research Grants - Research Centers in Engineering Program |
| FAPESP's process: | 19/23342-0 - Development of novel immunosensor architechtures for the detection of Huntington and Parkinson Diseases biomarkers |
| Grantee: | Luiz Otávio Orzari |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |