Grass-like CuCo2O4 nanowire arrays supported on nickel foam with high capacitances and desirable cycling performance

Abstract

Grass-like CuCo₂O₄ nanowire arrays supported on nickel foam have been successfully synthesized via a hydrothermal method. Electrochemical investigations demonstrate that the material is an excellent electrode for supercapacitors with remarkable performance including a high area capacitance of 611 F g⁻¹ at a current density of 1.7 A g⁻¹, and a desirable cycling stability of 94.8% capacitance retention after 8000 cycles.