3D net-like Co3O4@NiO nanostructures for high performance supercapacitors
Xiaochen
Sun 
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Abstract
Co3O4@NiO composite electrode materials were successfully synthesized by a two-step hydrothermal method followed by annealing treatment. Due to their three-dimensional network structure, these composite materials exhibited a large specific surface area, enhancing their electrochemical performance. Consequently, the Co3O4@NiO electrode demonstrated a specific capacitance of 1306 F g−1 at a current density of 1 A g−1, an excellent specific capacitance retention rate of 95.5% after 3000 cycles even at 8 A g−1 and a coulombic efficiency approaching 100%. These outstanding properties make the Co3O4@NiO composite materials promising electrode materials for high performance supercapacitors.
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