PbO_2/activated carbon（AC） hybrid supercapacitor in H_2SO_4 with a carbon foam current collector is studied.The PbO_2/AC hybrid is designed with electrodeposited PbO_2 thin film as positive electrode to match with A...PbO_2/activated carbon（AC） hybrid supercapacitor in H_2SO_4 with a carbon foam current collector is studied.The PbO_2/AC hybrid is designed with electrodeposited PbO_2 thin film as positive electrode to match with AC negative electrode.The discharge curve shows capacitive characteristics between 1.88 V and 0.65 V.The hybrid system exhibits excellent energy and power performance,with specific energy of 43.6 Wh/kg at a power density of 654.2 W/kg.The use of carbon foam current collector ensures stability of the PbO_2 electrode in H_2SO_4 environment.After 2600 deep cycles at 15 C high rate of charge/discharge,the capacity remains nearly unchanged from its initial value.展开更多
基金the financial support of this research work from Natural Science Foundation of China(No 20663005)
文摘PbO_2/activated carbon（AC） hybrid supercapacitor in H_2SO_4 with a carbon foam current collector is studied.The PbO_2/AC hybrid is designed with electrodeposited PbO_2 thin film as positive electrode to match with AC negative electrode.The discharge curve shows capacitive characteristics between 1.88 V and 0.65 V.The hybrid system exhibits excellent energy and power performance,with specific energy of 43.6 Wh/kg at a power density of 654.2 W/kg.The use of carbon foam current collector ensures stability of the PbO_2 electrode in H_2SO_4 environment.After 2600 deep cycles at 15 C high rate of charge/discharge,the capacity remains nearly unchanged from its initial value.
