Facile synthesis and electrochemical properties of MgCo2O4 nanowires
Ultra-thin and porous MgCo2O4 nanowires with larger specific surface area was successfully synthe-sized on Ni foam by hydrothermal method with surfactant sodium dodecylsulphate.It showed that MgCo2O4 nanowires exhibited a dense interwoven and transparent net-like structure with a high specific capacitance of 2128 F/g at a current of 5 A/g.After 6000 cycles under the condition of 40 A/g,98.4％of initial capacitance was retained.Additionally,asymmetric supercapacitor was assembled with this nanowires as binder-free posi-tive electrode and activated carbon as negative electrode respectively,which displayed a specific capacitance of 65.32 F/g and energy density of 20.41 Wh/kg under the power density of 338.95 W/kg.The above results show that the asymmetric supercapacitor is a good energy storage device which has good potential in practical applica-tions.
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