Co_xS_y活性材料的制备及其电化学性能

Preparation of Co_xS_y Active Materials and Their Electrochemical Performance

超级电容器是一种可快速充放电,并且充放电寿命长,对环境污染小的新型能源储存器件,其中活性材料是决定其性能好坏的关键。我们采用水热法制备了用于超级电容器的CoxSy电极材料,采用扫描电镜、X射线衍射光谱对制备的材料进行结构与成分表征。分析结果表明:电流密度为0.02 A/cm2时,放电比电容值为53.667 F/g,表现出优良的电容性能。

Supercapacitor is a new type of energy storage device that can be quickly charged and discharged, which has a long life and less polluting to the environment. Active materials are the key to deter-mining its performance. We prepared the CoxSy electrode material for supercapacitor by hydro-thermal method. The structure and composition were characterized by scanning electron micros-copy and X-ray diffraction spectroscopy. The results show that the specific capacitance is 53.667 F/g with current density 0.02 A/cm2, which shows excellent capacitance performance.