Jump to main content
Jump to site search

Issue 43, 2015
Previous Article Next Article

Highly porous graphitic carbon and Ni2P2O7 for a high performance aqueous hybrid supercapacitor

Author affiliations

Abstract

An aqueous Na-ion based hybrid capacitor has been successfully developed by using highly porous graphitic carbon (HPGC) derived from waste writing paper and a new electrode material as a negative and positive electrode, respectively. HPGC was prepared via hydrothermal carbonization and subsequent KOH activation of waste writing paper which showed a highly porous stacked sheet-like morphology with an exceptionally high BET specific surface area (1254 m2 g−1). HPGC exhibited typical electrical double layer capacitor (EDLC) behavior with a high specific capacitance of 384 F g−1 and good negative working potential (−1.0 V) in an aqueous electrolyte. On the other hand, Ni2P2O7 was synthesized by a simple co-precipitation technique and tested as a cathode material which delivered a maximum specific capacitance of 1893 F g−1 at 2 A g−1 current density. The fabricated HPGC‖Ni2P2O7 hybrid device displayed excellent cyclic stability up to 2000 cycles and delivered a maximum energy density of 65 W h kg−1 at 800 W kg−1 power density in a Na-ion based aqueous electrolyte.

Graphical abstract: Highly porous graphitic carbon and Ni2P2O7 for a high performance aqueous hybrid supercapacitor

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Jun 2015, accepted on 28 Jul 2015 and first published on 29 Jul 2015


Article type: Paper
DOI: 10.1039/C5TA04737D
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2015,3, 21553-21561
  •   Request permissions

    Highly porous graphitic carbon and Ni2P2O7 for a high performance aqueous hybrid supercapacitor

    B. Senthilkumar, Z. Khan, S. Park, K. Kim, H. Ko and Y. Kim, J. Mater. Chem. A, 2015, 3, 21553
    DOI: 10.1039/C5TA04737D

Search articles by author

Spotlight

Advertisements