Journal
JOURNAL OF POWER SOURCES
Volume 274, Issue -, Pages 943-950Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2014.10.156
Keywords
Nickel sulfide; Graphene nanosheets; Make-up cotton; Electrodeposition; Supercapacitor
Funding
- Heilongjiang Postdoctoral Fund [LBH-Z13059]
- Fundamental Research Funds for the Central Universities [HEUCF201403019]
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In this report, graphene nanosheets (GNS)/nickel sulfide (NiS) based material for high-performance supercapacitor is prepared by dip and dry and electrodeposition methods. Commercial flexible make-up cottons (MCs) are chose as skeletons to construct homogeneous three-dimensional (3D) interconnected graphene-wrapped macro-networks, which can support structures for high loading of active electrode materials and facilitate the access of electrolytes to active electrode materials. The hybrid GNS/NiS based MCs (denoted as MCs@GNS@NiS) electrode yields relatively high specific capacitance of 775 F g(-1) at a charge/discharge specific current of 0.5 A g(-1) and good capacitance retention of 88.1% after 1000 cycles at 2 A g(-1). Furthermore, the MCs@GNS@NiS electrode delivers a high energy density of 11.2 Wh kg(-1) at even a high power density of 1008 W kg(-1). Therefore, such low-cost and high-performance energy MCs based on GNS/NiS hierarchical nanostructures offer great promise in large-scale energy storage device applications. (C) 2014 Elsevier B.V. All rights reserved.
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