【摘要】 用简单共同沉淀法制备了钴酸镍,研究了煅烧温度对产物的影响。实验结果表明,在200⁴00℃不同温度下煅烧,得到的钴酸镍材料表现出不同的性质,当煅烧温度为200℃时,没有钴酸镍生成,温度高于250℃才开始形成钴酸镍,且随着煅烧温度的升高,钴酸镍粒径由6.7nm增大到28.1nm。其中煅烧温度为250℃的钴酸镍电极材料粒径最小,具有最大的电化学比表面积,作为超电容器的电极,其比电容也最大,为440F·g^-1,是良好的超级电容器的电极材料。更多还原

【Abstract】 NiCo₂O₄ are prepared with a coprecipitation process. The influence of the was studied on the copre-cipitation reaction. The experiment results show that the calcination temperature have statistically significant effects the properties of the material. When the calcinations temperature is 200℃, no NiCo₂O₄ observed from XRD and it is appeared over 250℃ The particle size of NiCo₂O₄ increased with the increase of the temperature from 6.7 to28.1nm. The most best one is the material with the calcinations temperature of 200 ℃ which has the smallest particle size, the largest specific capacitance of 440F·g^-1 and good performance as the electrodes of supercapacitor.更多还原