一次水热法制备MnCo_(2)S_(4)及其性能研究  

Preparation of MnCo_(2)S_(4)by primary hydrothermal method andstudy of its properties

作　　者：冯国威 仲为礼 王冰[1] 唐立丹[1] 商剑[1] 齐锦刚[1] FENG Guowei;ZHONG Weili;WANG Bing;TANG Lidan;SHANG Jian;QI Jingang(School of Materials Science and Engineering,Liaoning University of Technology,Jinzhou 121001,China)

机构地区：[1]辽宁工业大学材料科学与工程学院,辽宁锦州121001

出　　处：《功能材料》2025年第4期4213-4220,共8页Journal of Functional Materials

基　　金：辽宁省教育科研项目(JJL201915409)。

摘　　要：以氯化钴、氯化锰和硫化钠为原料,乙二醇为溶剂,利用一次水热法合成得到MnCo_(2)S_(4)电极材料,改变水热温度和时间得到不同水热参数制备的MnCo_(2)S_(4)材料。通过XRD、SEM、EDS对样品结进行表征。结果表明,水热温度、时间对MnCo_(2)S_(4)的结构、形貌和电化学性能有影响,水热温度120℃、水热时间8 h得到的针状形貌分布致密且比较均匀。选用了KOH作为水溶液体系的电解质,同时以活性炭作为负极活性材料,构建了一种非对称结构的超级电容器。电化学测试结果显示,当电流密度为1 A/g时,MnCo_(2)S_(4)电极材料的质量比电容为1412.3 F/g,制备的超级电容器的电容量达到76.2 F/g,在恒电流充放电中,电压保持率为25.6%。数值中可以看出材料的功率密度、能量密度良好。MnCo_(2)S_(4)electrode materials were synthesized using primary hydrothermal method with cobalt chloride,manganese chloride and sodium sulfide as raw materials and ethylene glycol as solvent,and the MnCo_(2)S_(4)materials prepared with different hydrothermal parameters were obtained by changing the hydrothermal temperature and time.The sample junctions were characterized by XRD,SEM and EDS,and the results showed that the hydrothermal temperature and time had an effect on the structure,morphology and electrochemical properties of MnCo_(2)S_(4),and the distribution of the needle-like morphology obtained by the hydrothermal temperature of 120℃and the hydrothermal time of 8 h was dense and relatively uniform.KOH was chosen as the electrolyte of the aqueous system,while activated carbon was used as the negative active material to construct a supercapacitor with asymmetric structure.The electrochemical test results showed that the mass specific capacitance of the MnCo_(2)S_(4)electrode material was 1412.3 F/g when the current density was 1 A/g,and the capacitance of the prepared supercapacitor reached 76.2 F/g,with a voltage retention of 25.6%in constant current charging and discharging.The good power density and energy density of the material can be seen in the values.

关 键 词：一次水热法 电极材料 MnCo_(2)S_(4) 水热参数 

分 类 号：O646[理学—物理化学]