Design and synthesis of hierarchical NiCo 2 S 4 @NiMoO 4 core/shell nanospheres for high-performance supercapacitors

A novel electrode material of three-dimensional hierarchical NiCo 2 S 4 @NiMoO 4 core/shell nanospheres was synthesized by a facile two-step hydrothermal method. These hierarchical NiCo 2 S 4 @NiMoO 4 core/shell nanospheres exhibit a high specific capacitance of 1714 F g −1 at a current density of 1 A g −1 , which indicated the excellent electrochemistry performance.