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

  • Bruno S. Noremberg (a1), Ricardo M. Silva (a1), Oscar G. Paniz (a1), José H. Alano (a1), Jairton Dupont (a2) and Neftali L. V. Carreño (a1)...

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.

Copyright

Corresponding author

Address all correspondence to Neftali L. V. Carreño at neftali@ufpel.edu.br

References

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