Please use this identifier to cite or link to this item:
Type: Artigo
Title: Freestanding aligned multi-walled carbon nanotubes for supercapacitor devices
Author: Moreira, João Vitor Silva
Corat, Evaldo José
May, Paul William
Cardoso, Lays Dias Ribeiro
Lelis, Pedro Almeida
Zanin, Hudson
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
Subject: Carbono
Country: Estados Unidos
Editor: Springer
Rights: Fechado
Identifier DOI: 10.1007/s11664-016-4817-6
Date Issue: 2016
Appears in Collections:FEEC - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
000385021300037.pdf2.35 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.