NiCo_(2)S_(4)@C-N花状电极材料的制备及其在超级电容器中的应用  

Preparation of NiCo_(2)S_(4)@C-N Flower-Like Electrode Materials and Their Application in Supercapacitors

作　　者：陈俞霖 张曼 CHEN Yulin;ZHANG Man(Department of chemistry and Life Sciences,Chifeng University,Chifeng,Inner Mongolia 024000,China)

机构地区：[1]赤峰学院化学与生命科学学院,内蒙古赤峰024000

出　　处：《浙江化工》2025年第1期6-13,共8页Zhejiang Chemical Industry

基　　金：国家自然科学基金项目(22361001);内蒙古自治区自然科学基金项目(2023QN02003);内蒙古自治区科技计划项目(2023YFDZ0070);内蒙古自治区教育科学研究“十四五”规划项目(2023NGHZX-ZH046)。

摘　　要：硫化镍钴(NiCo_(2)S_(4))是一种优良的超级电容器电极材料,具有脆性的晶体结构,容易在循环过程中出现体积膨胀等问题。研究一种NiCo_(2)S_(4)与其他材料负载的异质结构电极材料并应用于超级电容器中至关重要。以Ni(NO_(3))_(2)·6H_(2)O、Co(NO_(3))_(2)·6H_(2)O、硫代乙酰胺(TAA)等为原料,通过一步水热法在碳氮载体上负载NiCo_(2)S_(4)得到NiCo_(2)S_(4)@C-N核壳结构电极材料。采用SEM(扫描电子显微镜)、TEM(透射电子显微镜)、XRD(X射线衍射)、XPS(X射线光电子能谱)对其结构进行表征,证实NiCo_(2)S_(4)在C-N载体上分散均匀且形成具有较大比表面积的核壳结构,促进电子的快速传输。电流密度分别为5 mA/cm^(2)和10 mA/cm^(2)时,NiCo_(2)S_(4)@C-N核壳结构电极材料的比电容分别为250.83 F/g、455.28 F/g。结果表明,在过渡金属硫化物中引入碳氮载体材料构筑核壳结构可以有效提升电化学储能设备的整体电化学性能,NiCo_(2)S_(4)@C-N核壳结构电极材料因其出色的性能特点,有望成为高性能超级电容器电极材料的理想选择。Nickel cobalt sulfide(NiCo_(2)S_(4))is an excellent electrode material for supercapacitors.It has a brittle crystal structure and is prone to problems such as volume expansion during the cycling.It is very important to study a heterogeneous electrode material loaded with NiCo_(2)S_(4) and other materials and apply it to supercapacitors.Using Ni(NO3)2·6H2O,Co(NO3)2·6H2O and thioacetamide(TAA)as raw materials,NiCo_(2)S_(4) was loaded on carbon and nitrogen carrier by one-step hydrothermal method to obtain NiCo_(2)S_(4)@C-N core-shell electrode material.The structure of NiCo_(2)S_(4) was characterized by SEM(scanning electron microscope),TEM(transmission electron microscope),XRD(X-ray diffraction)and XPS(X-ray photoelectron spectroscopy).It was confirmed that NiCo_(2)S_(4) was uniformly dispersed on C-N carrier and formed a core-shell structure with large specific surface area,which promoted rapid transport of electron.When the current density was 5 mA/cm^(2) and 10 mA/cm^(2),the specific capacitance of NiCo_(2)S_(4)@C-N core-shell electrode material is 250.83 F/g and 455.28 F/g,respectively.The results show that the core-shell structure constructed by introducing carbon and nitrogen carrier materials into transition metal sulfides can effectively improve the overall electrochemical performance of electrochemical energy storage equipment.NiCo_(2)S_(4)@C-N core-shell electrode materials are expected to become the ideal choice of high performance supercapacitor electrode materials due to their excellent performance characteristics.

关 键 词：NiCo_(2)S_(4)@C-N 氮掺杂 核壳结构 超级电容器 电化学性能 

分 类 号：TM5[电气工程—电器]