The Study On Polyaniline And Nickel Oxides As Electrode Materials Of Supercapacitor

Supercapacitor is a novel energy storage component developed in recent years. It integrates the advantages, such as the high power density characterized by conventional capacitors, the energy density characterized by rechargeable batteries, the fast charge/discharge performance and the long life, thus the component is expected to be a novel power source with high efficiency and practicability.This study on the synthesis indicates that polyaniline perform the best electrochemical characterization in reaction enviorment of 6h, and 0-2℃, and the specific capacitance of it is 173 Fg·-1, the specific energy is 21.6 Wh·kg-1. It decreases five percent in 50 mA current during 100 times charge/discharge process, which performs good cyclic life.In the reaction of polyaniline and nickel oxide, it is obvious that the electrochemical performance of compound is best when the weight of nickel oxide is 60%, and the specific capacitance is 373 F·g-1, specific energy is 46.7 Wh·kg-1.Nickel-manganese oxide has been used as a kind of new electrode material for supercapacitors. The electrochemical performance of nickel-manganese oxide is better than that of common metal oxide. Processing through precipitation, calcination, and acid treatment gives two forms of nickel-manganese oxide with different morphology:spinel and ilmenite. The ilmenite form has a higher specific capacitance (692 F·g-1) and higher specific energy (55.36 Wh·kg-1) than the spinel form, and has long cyclic life.