Corresponding Author

Ling-Bin KONG(konglb@lut.cn)


By using defects on the surface of CMK-3 served as nucleation center, Co0.25Ni0.75 oxide/C composite was successfully prepared through a simple chemical co-precipitation method. Characterization was carried by using X-ray diffraction, BET and scanning electron microscopy. Results showed that a perfect mesoporous network of interconnected nanoflakes was obtained for Co0.25Ni0.75 oxide/C composite and, this material has a less crystallization, interconnected nanoflakes network structure and a narrow mesoporous distribution at about 3~4 nm. The highly dispersed and loosely packed Co0.25Ni0.75 oxide/C composite possessed good electrochemical accessibility and fast diffusion rate of OH-. Cyclic voltammetry, charge–discharge curves suggested that the as-prepared Co0.25Ni0.75 oxide(92%) /C electrode is highly electrochemical activated and an admirable specific capacitance of as high as 1781 F/g could be obtained at current density of 5mA/cm2.

Graphical Abstract


supercapacitor;, cobalt-nickel oxide;, interconnected nanoflakes network

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