摘要
Composites of mesoporous carbon（CMK-3） and Co3 O4 nanosheets grown on nickel foam were successfully synthesized by a simple route. A bare Co3 O4 film was synthesized for comparison. With the addition of CMK-3, the Co3 O4 nanoparticles self-organize and agglomerate into nanosheets, showing a significant influence by CMK-3 on the morphology. The CMK-3/Co3 O4 exhibits an optimal specific capacitance of 1131.3 Fg^（-1） in 3 mol L-1 KOH aqueous electrolyte at 0.5 Ag-1, and a retention ratio of 91% over3000 cycles, both being much higher than that achieved from the bare Co3 O4 film（727 Fg^（-1） of specific capacitance, and 82% capacitance retention ratio）, indicating that the CMK-3/Co3 O4 nanosheets are very promising as electrode materials for supercapacitor applications.
Composites of mesoporous carbon（CMK-3） and Co3 O4 nanosheets grown on nickel foam were successfully synthesized by a simple route. A bare Co3 O4 film was synthesized for comparison. With the addition of CMK-3, the Co3 O4 nanoparticles self-organize and agglomerate into nanosheets, showing a significant influence by CMK-3 on the morphology. The CMK-3/Co3 O4 exhibits an optimal specific capacitance of 1131.3 Fg^（-1） in 3 mol L-1 KOH aqueous electrolyte at 0.5 Ag-1, and a retention ratio of 91% over3000 cycles, both being much higher than that achieved from the bare Co3 O4 film（727 Fg^（-1） of specific capacitance, and 82% capacitance retention ratio）, indicating that the CMK-3/Co3 O4 nanosheets are very promising as electrode materials for supercapacitor applications.
基金
jointly supported by Shanghai Eastern-scholar program
