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

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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.

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Acknowledgment

This study was financed in part by the Coordenaçâo de Aperfeiçoamento de Pessoal de Nivel Superior-Brasil (CAPES)-Finance Code 001. The authors would like to acknowledge Fapergs/PqG 2017 17/2551-0001157-0, CAPES PDSE/88881.187730/2018-01, and Celulose Riograndense-Brazil.

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Correspondence to Neftali L. V. Carreño.

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Noremberg, B.S., Silva, R.M., Paniz, O.G. et al. Renewable supercapacitors based on cellulose/carbon nanotubes/[Bmim] [NTf2] ionic liquid. MRS Communications 9, 726–729 (2019). https://doi.org/10.1557/mrc.2019.34

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  • DOI: https://doi.org/10.1557/mrc.2019.34

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