共沉淀法制备NiCo_2O_4及其超级电容器电化学性能  

Synthesis of NiCo_2O_4 by co-precipitation and its electrochemical performance for supercapacitors

作　　者：张勇[1,2] 王诗文[1] 高海丽[1] 赵淑巧[1] 

机构地区：[1]郑州轻工业学院材料与化学工程学院,河南郑州450002 [2]河南省表界面科学重点实验室,河南郑州450002

出　　处：《电源技术》2018年第2期212-214,287,共4页Chinese Journal of Power Sources

基　　金：河南省高校科技创新团队支持计划项目(16IRTSTHN016);国家自然科学基金项目(21503193)

摘　　要：以醋酸盐为原料,共沉淀法成功制备出纯尖晶石结构NiCo_2O_4电极材料。采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、N2吸脱附分析(BET)方法对试样的结构形貌及比表面积进行了表征,通过循环伏安、恒流充放电、交流阻抗测试其电容性能。结果表明:在100 mA/g电流密度下恒流充放电,比电容可达218 F/g,在300 mA/g电流密度下,循环100次,容量保持率保持在65%以上。Highly porous nickel cobaltite(NiCo_2O_4) was synthesized by a chemical co-precipitation method. The obtained NiCo_2O_4 was investigated by SEM, XRD, BET, cyclic voltammetry, galvanostatic current charge-discharge and EIS. The results show that the prepared NiCo_2O_4 exhibits good capacitor behavior. The initial discharge specific capacitance is 218 F/g at the current density of 100 mA/g. After 100 cycles at the current density of 300 mA/g, the specific capacitance maintains above 65%.

关 键 词：超级电容器 共沉淀法 NiCo2O4 

分 类 号：TM53[电气工程—电器]