Electrochemically synthesized nanocrystalline spinel thin film for high performance supercapacitor

Spinels are not known for their supercapacitive nature. Here, we have explored electrochemically synthesized nanostructured NiCo2O4 spinel thin-film electrode for electrochemical supercapacitors. The nanostructured NiCo2O4 spinel thin film exhibited a high specific capacitance value of 580 F g−1 and an energy density of 32 Wh kg−1 at the power density of 4 kW kg−1, accompanying with good cyclic stability.