Asymmetric supercapacitor based on carbon nanofibers as the anode and two-dimensional copper cobalt oxide nanosheets as the cathode

Research output: Contribution to journalJournal article – Annual report year: 2019Researchpeer-review

  • Author: Babu, R. Suresh

    Centro Federal De Educacao Tecnologica Celso Suckow Da Fonseca, Brazil

  • Author: Vinodh, R.

    Pusan National University, Korea, Democratic People's Republic of

  • Author: de Barros, A.L.F.

    Centro Federal De Educacao Tecnologica Celso Suckow Da Fonseca, Brazil

  • Author: Samyn, L. M.

    Centro Federal De Educacao Tecnologica Celso Suckow Da Fonseca, Brazil

  • Author: Prasanna, K.

    Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark

  • Author: Maier, M.A.

    Centro Federal De Educacao Tecnologica Celso Suckow Da Fonseca, Brazil

  • Author: Alves, C.H.F.

    Centro Federal De Educacao Tecnologica Celso Suckow Da Fonseca, Brazil

  • Author: Kim, Hee-Je

    Pusan National University, Korea, Democratic People's Republic of

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This paper reports the fabrication of an ultra-high energy and power density asymmetric supercapacitor (ASC) containing a novel porous carbon nanofiber derived from hypercross-linked polymers (HCP-CNF) and two-dimensional copper cobalt oxide nanosheets (CCO-NS) as the negative and positive electrodes, respectively. The micropore-enriched HCP-CNF is obtained from a facile Friedel-Crafts reaction with naphthalene and α, α′-dichloro-p-xylene as the starting material. The CCO-NS have been prepared by a simple and inexpensive hydrothermal synthesis using polyvinylpyrrolidone (PVP) as a shape controlling agent. The fabricated CCO-NS//HCP-CNF ASC device exhibit a high specific capacitance, 244 F g−1 at a current density of 1 A g−1, owing to the unique porous architecture of CCO-NS and the interconnected microporous carbon skeleton with a high surface area of HCP-CNF. Furthermore, the assembled ASC device show an ultra-high energy density of 25.1 Wh kg−1 at a power density of 400 W kg−1 with maximum operating voltage of 1.60 V. The electrode shows good capacitance retention (91.1%) after 5000 cycles in a 3 M aqueous KOH solution. In addition, two ASC devices are connected in series powered a 5 mm diameter LED indicator for approximately 30 min, highlighting its efficient power supply.
Original languageEnglish
JournalChemical Engineering Journal
Volume366
Pages (from-to)390-403
ISSN1369-703X
DOIs
Publication statusPublished - 2019
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • CuCo2O4, Energy storage, Porous carbon, Asymmetric supercapacitors, Charge-discharge
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