Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5462607 | Materials Letters | 2018 | 4 Pages |
â¢NiS hollow spheres were electrodeposited directly on Ni foam at room temperature.â¢The NiS@NF composite showed high specific capacitance: 1553 F gâ1 at 2.35 A gâ1.â¢The NiS@NF composite exhibited good cycling stability: 95.7% after 2000 cycles.
NiS hollow spheres were synthesized directly on the surface of Ni foam (NiS@NF) at room temperature via a simple electrodeposition in a KOH/thiourea solution without any Ni precursors. Morphological analysis revealed the formation of NiS hollow spheres, which consisted of nanoparticles. The NiS@NF nanocomposite exhibited a very high specific capacitance of 1553Â FÂ gâ1 (2.64Â FÂ cmâ2) at a current density of 2.35Â AÂ gâ1 (4Â mAÂ cmâ2) in 6Â M KOH electrolyte. The NiS@NF nanocomposite also demonstrated excellent cycling stability (95.7% specific capacitance retention after 2000 cycles).
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