Open AccessIntegrated carbon spheres on nickel foam as electrode for supercapacitors
Author(s) -
Wei Jiatong,
Lin Guannan,
Wang Yan,
He Xinping,
Zhao Chun,
Zhao Xu
Publication year - 2013
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2012.0885
Subject(s) - supercapacitor , carbon nanofoam , nickel , materials science , graphene foam , electrode , spheres , carbon fibers , metal foam , composite material , chemical engineering , metallurgy , nanotechnology , chemistry , capacitance , porosity , composite number , graphene , engineering , graphene oxide paper , aerospace engineering
Integrated carbon spheres in the manner of agglomerate of joined ones were grown on nickel foam substrates by a hydrothermal technique, which could be directly used as an electrode for supercapacitors. This avoided the exploitation of adhesive and thereby significantly decreased the resistance of the electrode. The electrode exhibited a rectangular cyclic voltammogram even at a high scan rate of 10 mV/s and its specific capacitance was as high as 196.43 F/g at the current density of 1 A/g.