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Abstract 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… Click to show full abstract
Abstract 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 1553 F g −1 (2.64 F cm −2 ) at a current density of 2.35 A g −1 (4 mA cm −2 ) in 6 M KOH electrolyte. The NiS@NF nanocomposite also demonstrated excellent cycling stability (95.7% specific capacitance retention after 2000 cycles).
Journal Title: Materials Letters
Year Published: 2018
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