Jump to main content
Jump to site search


Ultrathin nickel hydroxide on carbon coated 3D-porous copper structures for high performance supercapacitors

Author affiliations

Abstract

An ultrathin nickel hydroxide layer electrodeposited on a carbon-coated three-dimensional porous copper structure (3D-C/Cu) is suggested as an additive and binder-free conductive electrode with short electron path distances, large electrochemical active sites, and improved structural stability, for high performance supercapacitors. The 3D-porous copper structure (3D-Cu) provides high electrical conductivity and facilitates electron transport between the Ni(OH)2 active materials and the current collector of the Ni-plate. A carbon coating was applied to the 3D-Cu to prevent the oxidation of Cu, without degrading the electron transport behavior of the 3D-Cu. The 3D-Ni(OH)2/C/Cu exhibited a high specific capacitance of 1860 F g−1 at 1 A g−1, and good cycling performance, with an 86.5% capacitance retention after 10 000 cycles. When tested in a two-electrode system, an asymmetric supercapacitor exhibited an energy density of 147.9 W h kg−1 and a power density of 37.0 kW kg−1. These results open a new area of ultrahigh-performance supercapacitors, supported by 3D-Cu electrodes.

Graphical abstract: Ultrathin nickel hydroxide on carbon coated 3D-porous copper structures for high performance supercapacitors

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Nov 2017, accepted on 17 Nov 2017 and first published on 17 Nov 2017


Article type: Communication
DOI: 10.1039/C7CP07473E
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
  •   Request permissions

    Ultrathin nickel hydroxide on carbon coated 3D-porous copper structures for high performance supercapacitors

    K. Kang, I. Kim, A. Ramadoss, S. Kim, J. Yoon and J. Jang, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C7CP07473E

Search articles by author

Spotlight

Advertisements