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Renewable supercapacitors based on cellulose/carbon nanotubes/[Bmim][NTf2] ionic liquid

Published online by Cambridge University Press:  03 April 2019

Bruno S. Noremberg Open the ORCID record for Bruno S. Noremberg [Opens in a new window] ,
Ricardo M. Silva ,
Oscar G. Paniz ,
José H. Alano Open the ORCID record for José H. Alano [Opens in a new window] ,
Jairton Dupont Open the ORCID record for Jairton Dupont [Opens in a new window]  and
Neftali L. V. Carreño Open the ORCID record for Neftali L. V. Carreño [Opens in a new window]
Bruno S. Noremberg
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of Pelotas, Gomes Carneiro, 1, 96010-000, Pelotas, RS, Brazil
Ricardo M. Silva
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of Pelotas, Gomes Carneiro, 1, 96010-000, Pelotas, RS, Brazil
Oscar G. Paniz
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of Pelotas, Gomes Carneiro, 1, 96010-000, Pelotas, RS, Brazil
José H. Alano
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of Pelotas, Gomes Carneiro, 1, 96010-000, Pelotas, RS, Brazil
Jairton Dupont
Affiliation:
Institute of Chemistry, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 9500, 91501-970, Porto Alegre, RS, Brazil
Neftali L. V. Carreño*
Affiliation:
Graduate Program in Materials Science and Engineering, Federal University of Pelotas, Gomes Carneiro, 1, 96010-000, Pelotas, RS, Brazil
*
Address all correspondence to Neftali L. V. Carreño at neftali@ufpel.edu.br
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Abstract

Improvement of the performance of renewable electronic devices is a crucial point for the consolidation of this emerging technology. Herein, we develop a supercapacitor based on cellulose, carbon nanotubes, and ionic liquids. A conductive paper prepared by simple acid hydrolysis of cellulose and carboxylated carbon nanotubes was used as an electrode. A cellulose sponge impregnated with 1-n-butyl-3-methylimidazolium bis(trifluoromethane sulfonyl)imide was used as a separator/electrolyte. Electrochemical tests were performed in a two-electrode cell that presented a specific capacitance of 34.37 F/g when considered the active mass and 97.9% of capacitance retention after 5000 charge/discharge cycles.

Type
Research Letters
Information
MRS Communications , Volume 9 , Issue 2 , June 2019 , pp. 726 - 729
Copyright
Copyright © Materials Research Society 2019 

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