Hierarchical NiCo2O4@MnO2core–shell heterostructured nanowire arrays on Ni foam as high-performance supercapacitor electrodes

An advanced integrated electrode for high-performance supercapacitors has been designed by growing hierarchical NiCo2O4@MnO2 core–shell heterostructured nanowire arrays on nickel foam. Such unique array nanoarchitectures exhibit remarkable electrochemical performance with high capacitance and desirable cycle life at high rates.