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Type: Artigo de periódico
Title: Reduced graphene oxide and vertically aligned carbon nanotubes superhydrophilic films for supercapacitors devices
Author: Zanin, H
Saito, E
Ceragioli, HJ
Baranauskas, V
Corat, EJ
Abstract: Reduced graphene oxide (RGO) and vertically aligned carbon nanotubes (VACNT) superhydrophilic films were prepared by chemical vapor deposition techniques for electrical energy storage investigations. These electrodes were characterized in terms of their material and electrochemical properties by scanning electron microscopy (SEM), surface wettability, Fourier transform infrared spectroscopy (FTIR), energy dispersive and Raman spectroscopies, cyclic voltammetry (CV) and galvanostatic charge-discharge. We observed several physical structural and electrochemical similarities between these carbon-based materials with particular attention to very good specific capacitance, ultra-high energy storage and fast power delivery. Our results showed that the main difference between specific capacitance values is attributed to pseudocapacitive contribution and high density of multiwall nanotubes tips. In this work we have tested a supercapacitor device using the VACNT electrodes. (C) 2013 Elsevier Ltd. All rights reserved.
Subject: Nanostructures
Vapor deposition
Raman spectroscopy
Electrochemical properties
Energy storage
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Citation: Materials Research Bulletin. Pergamon-elsevier Science Ltd, v. 49, n. 487, n. 493, 2014.
Rights: fechado
Identifier DOI: 10.1016/j.materresbull.2013.09.033
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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