Electric Double Layer Capacitor of Multiwall Carbon Nanotubes under Different Degree of Acid Oxidations

Abstract:

Carbon nanotubes (CNT) are a material with unique properties (mechanical, electrical, electrochemical, etc) allied with low density and high specific area. The present paper studied the electrochemical properties of carbon nanotubes growth by Chemical Vapor Depostion (CVD) technique. The samples were characterized by SEM, Raman Spectroscopy and the double layer capacitance of the powders was evaluated in a Teflon capacitor system with a Ag/AgCl (3M) as reference electrode. The catalyst remotion is provided in Hydrochloric acid washing and the wet oxidative treatments promotes the CNT oxidation and increase the pseudocapacitive response.

• Periodical: Materials Science Forum (Volume 802)
• Pages: 186-191
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.802.186
• Online since: December 2014
• Authors: Eduardo Saito*, Vagner Eduardo Caetano, Erica Freire Antunes, Anderson Oliveira Lobo, Fernanda Roberto Marciano, Vladimir Jesus Trava-Airoldi, Evaldo José Corat
• Keywords: Carbon Nanotube (CN), Double Layer Supercapacitor, Energy Storage

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