Porous spherical MnCo_(2)S_(4) as high⁃performance electrode material for hybrid supercapacitors  

多孔球形MnCo_(2)S_(4)作为混合超级电容器的高性能电极材料

作　　者：LUO Min WANG Xiaonan ZHANG Yaqin PANG Tian LI Fuzhi SHI Pu 罗珉;王潇楠;张亚琴;庞恬;李福枝;石璞(湖南工业大学包装与材料工程学院,株洲412007)

机构地区：[1]College of Packaging and Material Engineering,Hunan University of Technology,Zhuzhou,Hunan 412007,China

出　　处：《无机化学学报》2025年第2期413-424,共12页Chinese Journal of Inorganic Chemistry

基　　金：湖南省教育厅科研基金(No.23A0416)资助。

摘　　要：Porous spherical MnCo_(2)S_(4) was synthesized by a simple solvothermal method.Thanks to the well-designedbimetallic composition and the unique porous spherical structure,the MnCo_(2)S_(4) electrode exhibited an exceptionalspecific capacitance of 190.8 mAh·g^(-1)at 1 A·g^(-1),greatly higher than the corresponding monometallic sulfides MnS(31.7 mAh·g^(-1))and Co_(3)S_(4)(86.7 mAh·g^(-1)).Impressively,the as-assembled MnCo_(2)S_(4)||porous carbon(PC)hybridsupercapacitor(HSC),showed an outstanding energy density of 76.88 Wh·kg^(-1)at a power density of 374.5 W·kg^(-1),remarkable cyclic performance with a capacity retention of 86.8% after 10000 charge-discharge cycles at 5 A·g^(-1),and excellent Coulombic efficiency of 99.7%.采用简单的溶剂热法合成了多孔球形的MnCo2S4。得益于精心设计的双金属成分和独特的多孔球形结构,MnCo2S4电极在1 A·g^(-1)电流密度下显示出190.8 mAh·g^(-1)的优异比电容,远高于相对应的单金属硫化物MnS(31.7 mAh·g^(-1))和Co3S4(86.7 mAh·g^(-1))。值得注意的是,组装后的MnCo2S4||多孔碳(PC)混合超级电容器(HSC)在功率密度为374.5 W·kg^(-1)的条件下,能量密度高达76.88 Wh·kg^(-1),且循环性能显著,在5 A·g^(-1)电流密度下充放电循环10000次后容量保持率为86.8%,库仑效率高达99.7%。

关 键 词：transitional metal sulfide SUPERCAPACITOR porous spherical structure 

分 类 号：TM53[电气工程—电器] O614.711[理学—无机化学] O614.812[理学—化学]