微波法合成超级电容器材料CuCo_(2)S_(4)及其电化学性能  

Microwave-assisted synthesis and electrochemical preformance of CuCo_(2)S_(4)as electrode for supercapacitors

作　　者：曲铭松 龚福忠[1] 尹作栋[1] QU Mingsong;GONG Fuzhong;YIN Zuodong(School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2024年第1期161-167,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：广西创新驱动发展专项资金项目(桂科AA19046002)。

摘　　要：为了制备高性能超级电容器的储能材料,以一水合乙酸铜、四水合乙酸钴、硫代乙酰胺为原料,柠檬酸为调控剂,通过微波法合成了CuCo_(2)S_(4)纳米材料,采用场发射扫描电镜、X射线衍射仪进行了形貌和晶相结构的表征,考察了其电化学性能。结果表明:所合成的CuCo_(2)S_(4)纳米材料由直径为10~20 nm的纳米团簇和直径为400~600 nm、厚度约为20 nm的纳米片组成。在电流密度为1、10 A/g时,该纳米材料的比电容达到1710、826 F/g,经恒电流充放电循环2500次之后,其容量保持率为96.6%,显示较好的循环稳定性。In order to prepare conveniently high performance supercapacitor energy storage material,CuCo_(2)S_(4)nanomaterial was synthesized by microwave method using copper acetate monohydrate,cobalt acetate tetrahydrate and thioacetamide as raw materials and citric acid as regulator.The morphology and crystal structure of CuCo_(2)S_(4)composite were characterized by field emission scanning electron microscopy(FESEM)and X-ray diffractometry(XRD),and its electrochemical performance was investigated.The results show that the as-synthesized CuCo_(2)S_(4) nanomaterial is consisted of nanoclusters with 10~20 nm in diameter and nanosheets with 400~600 nm in diameter and about 20 nm in thickness.As the electrode material of supercapacitor,the specific capacity reaches 1710 F/g and 826 F/g when the current density is 1 A/g and 10 A/g respectively.After 2500 cycles of constant current charge-discharge,the capacity retention rate is still as high as 96.6%,showing a high cycle structural stability.

关 键 词：钴铜硫化物 微波合成 超级电容器 比电容 

分 类 号：TM533.1[电气工程—电器]