利用微波辅助法快速制备了三维花状NiCo₂S₄纳米材料，纳米花由小纺锤状纳米粒子相互交错组成。通过电化学法测试了该纳米材料在6 mol/L KOH溶液中的电容行为。结果表明，作为电极材料该纳米材料具备良好的电容性能；在电流密度为2 A/g时比电容量最高达到了975 F/g；在功率密度为400 W/kg时，NiCo₂S₄电极的能量密度为21.7 Wh/kg；当1 000圈恒电流充放电循环后，比电容仍可保持其初始电容的93.1%。

3D flower-like NiCo₂S₄ nanomaterial is prepared by microwave assisted heating method.It is found that 3D flower-like NiCo₂S₄ are composed of small spindle-like nanoparticles intertwined with each other.The pseudo-capacitive properties of this material are evaluated by cyclic voltammetry,galvanostatic charge-discharge tests and electrochemical impedance spectroscopy in a 6 M KOH solution.The results show that this 3D flower-like NiCo₂S₄ nanomaterial as an electrode material possesses excellent capacitance performance.Its specific capacitance reaches as high as 975 F·g^-1 at a current density of 2 A·g^-1,and it shows an energy density of 21.7 Wh·kg^-1 at an power density of 400 W·kg^-1.After 1 000 cycles of constant current charge and discharge,its specific capacitance can still maintain 93.1% of its initial capacitance.