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Fabrication of Metal Sulfides/Graphene Nanocomposites for the Applications in Supercapacitors. Part I: NiS/Graphene

[ Vol. 9 , Issue. 1 ]

Author(s):

Lile Liu, K. P Annamalai and Yousheng Tao   Pages 43 - 48 ( 6 )

Abstract:


NiS/reduced graphene oxide nanocomposites were prepared by a hydrothermal method. Electron microscope observation revealed that the materials were of thin sheet-like structure and X-ray diffraction indicated the NiS of high-purity on the graphene nanosheets. Nitrogen adsorption on the samples at 77 K revealed the porous properties. Such materials were pseudo-active, exhibiting high specific capacitance of 978 F g 1 at 1 A g 1 in 3M KOH and high capacitance retention of 76% over 1000 cycles at 5 A g 1, promising for applications in supercapacitors.

Keywords:

Electrode, energy storage, graphene, nanocomposite, nickel sulfide, supercapacitor.

Affiliation:

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Haixi Institutes, Chinese Academy of Sciences (CAS), Fuzhou 350002, China.

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