| Full text | |
| Author(s): |
Silva Moreira, Joao Vitor
;
Corat, Evaldo Jose
;
May, Paul William
;
Ribeiro Cardoso, Lays Dias
;
Lelis, Pedro Almeida
;
Zanin, Hudson
Total Authors: 6
|
| Document type: | Journal article |
| Source: | JOURNAL OF ELECTRONIC MATERIALS; v. 45, n. 11, p. 8-pg., 2016-11-01. |
| Abstract | |
We report on the synthesis and electrochemical properties of multi-walled carbon nanotubes (MWCNTs) for supercapacitor devices. Freestanding vertically-aligned MWCNTs and MWCNT powder were grown concomitantly in a one-step chemical vapour deposition process. Samples were characterized by scanning and transmission electron microscopies and Fourier transform infrared and Raman spectroscopies. At similar film thicknesses and surface areas, the freestanding MWCNT electrodes showed higher electrochemical capacitance and gravimetric specific energy and power than the randomly-packed nanoparticle-based electrodes. This suggests that more ordered electrode film architectures facilitate faster electron and ion transport during the charge-discharge processes. Energy storage and supply or supercapacitor devices made from these materials could bridge the gap between rechargeable batteries and conventional high-power electrostatic capacitors. (AU) | |
| FAPESP's process: | 14/02163-7 - Development of supercapacitors devices from graphene, carbon nanotubes and diamonds |
| Grantee: | Hudson Giovani Zanin |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 15/17829-3 - Design and implementation of a HFCVD reactor |
| Grantee: | Pedro Lelis da Rocha Almeida |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 14/21587-2 - Development of supercapacitors devices from graphene, carbon nanotubes and diamonds |
| Grantee: | Hudson Giovani Zanin |
| Support Opportunities: | Scholarships in Brazil - Young Researchers |
| FAPESP's process: | 15/17764-9 - Synthesis and characterization of graphene by chemical deposition |
| Grantee: | Joao Vitor da Silva Moreira |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 15/50093-0 - Brazil and UK collaboration for energy storage and supply |
| Grantee: | Hudson Giovani Zanin |
| Support Opportunities: | Regular Research Grants |