Effect of Cobalt Doping on the Electrochemical Performance of MoS2/CNTs for Supercapacitor Applications

被引:0
作者
Wei, Zhiqiang [1 ,2 ]
Zhou, Meipan [1 ]
Zhang, Huining [1 ]
Bai, Jinglong [1 ]
Ding, Meijie [1 ]
Li, Zhiming [1 ]
Yu, Qingsong [1 ]
机构
[1] Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
[2] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
关键词
Supercapacitor; transition metal sulfide; MoS2/CNT; Co doped; TRANSITION;
D O I
10.1007/s11664-025-11870-2
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this study, transition metal sulfide composites were synthesized through a cost-effective and simple hydrothermal method, intended for use as electrode materials in supercapacitors. Studies have shown that the material has excellent electrochemical properties. During the preparation of MoS2/carbon nanotubes (CNTs), when 1 mmol of cobalt nitrate replaces sodium molybdate, the composite material achieves a specific capacitance of 1560 A g(-1) at a current density of 1 A g(-1) and 1335 A g(-1) at 10 A g(-1), demonstrating excellent rate performance. After 5000 charge/discharge cycles at a current density of 10 A g(-1), the material maintains a capacity retention of 83.1%, with a coulombic efficiency close to 100%. When assembled into a hybrid capacitor, the specific capacitance still reaches 128.9 F g(-1) at a current density of 1 A g(-1), still has 54% capacity retention at a current density of 10 A g(-1), and provides an energy density of 45.83 W h kg(-1) at a power density of 800.92 W kg(-1), demonstrating its potential application value in high-efficiency energy storage devices.
引用
收藏
页码:3876 / 3886
页数:11
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