Self-supported FeCo2O4/CoO@CNTs film as cathode material to construct high energy density supercapacitor

被引:2
作者
Yuan, Lei [1 ]
Fan, Dongkun [1 ]
Liu, Yuanzhen [1 ]
Li, Zhaohui [1 ]
Xu, Chunming [1 ]
Xin, Na [1 ,2 ]
机构
[1] Suqian Univ, Sch Mech & Elect Engn, Suqian 223800, Peoples R China
[2] Jiangsu Univ, Automot Engn Res Inst, Zhenjiang 212013, Peoples R China
关键词
CNTs; Supercapacitor; Transition metal oxides; ELECTROCHEMICAL PERFORMANCE; COMPOSITE ELECTRODE; NANOSHEET ARRAYS; CARBON NANOTUBES; MOF; SHELL;
D O I
10.1016/j.jelechem.2024.118758
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A simple hydrothermal method was used to synthesize FeCo2O4/CoO@CNTs composite material as the cathode material of asymmetric supercapacitor. Based on the advantages of single/bimetal oxide and the synergistic effect after compounding, the hierarchical structure material can improve the energy density. The electrode material has a capacitance of 965 F g- 1 at 1 A/g. The specific capacitance of an asymmetric supercapacitor assembled with FeCo2O4/CoO@CNTs as the positive electrode, carbon nanotubes (CNTs) as the negative electrode and KOH as the electrolyte is 142.5 F g- 1 at 1 A/g. The capacity retention rate is 93.7 % after 10,000 cycles, and the device delivered efficient energy of 44.5 Wh kg- 1 at 750 W kg- 1. It demonstrates the application prospects of the prepared composite materials in energy storage.
引用
收藏
页数:11
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