用于高性能非对称超级电容器器件应用的ZrO2@MoO3负极材料

High performance anode materials are required for the development of stable, efficient and low cost energy storage devices. ZrO 2 is a stable electrode material. However, its electrochemical performance is poor. Thus, in the present study we have synthesized ZrO 2 @MoO 3 as an anode material using hydrothermal method and studied its electrochemical behaviour. The specific capacitance (SC) of the ZrO 2 @MoO 3 turns out to be 916 F/g at 3.3 A/g. The electrode retains 90% of its initial SC after 2000 cycles. To test the real life application of the ZrO 2 @MoO 3 as an anode material, asymmetric device was assembled using activated carbon (AC) as a cathode (ZrO 2 @MoO 3 //AC). The energy density and power density of ZrO 2 @MoO 3 //AC turns out to be 15 Wh/kg and 933 W/Kg, respectively. After 30 s of charging, ZrO 2 @MoO 3 //AC is used to light up two light emitting diodes (LEDs) for 6 mins.