Abstract: Transition metals，especially Ni and Co elements，have been widely investigated and applied in developing energy storage electrode materials due to their excellent electrochemical properties and abundant natural resources. Among them，NiCo-layered double hydroxide（NiCo-LDH）electrode material attracted much attention because of its merits，such as tunable morphology and high specific capacitance. Herein，we reviewed the preparation methods of NiCo-LDH as a supercapacitor material and its modified materials via ion-doping and hybrid combination. The effects of the preparation method on its microstructure and electrochemical performance were discussed.

Key words: supercapacitor, NiCo-layered double hydroxide, electrochemical performance, battery- type capacitor material