Fabrication of Zn-doped Co3O4 as cathode material for aqueous rechargeable Zn-ion batteries

被引:4
|
作者
Zhang, Yichen [1 ]
Zhang, Youfeng [1 ]
Feng, Yaping [1 ]
Wang, Yinling [2 ]
Zhang, Liang [2 ]
机构
[1] Shanghai Univ Engn Sci, Sch Mat Sci & Engn, Shanghai 201620, Peoples R China
[2] Huanghuai Univ, Henan Engn Lab New Energy Convers & Control Techno, Zhumadian 463000, Henan, Peoples R China
来源
关键词
Zn battery; Zeolite imidazole-67; Aqueous electrolyte; Zinc ion battery; HIGH-ENERGY DENSITY; CARBON CLOTH; MECHANISMS; PROGRESS; ARRAYS;
D O I
10.1016/j.ijoes.2023.100268
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The increasing demand for advanced energy-storage systems have led to extensive research on Co3O4//Zn batteries because of their high theoretical capacity, low cost, and environment friendliness. However, the capacity of Co3O4//Zn batteries is decreased by the volume change of Co3O4 cathode in practical application, so its advantages are not fully utilised. To improve the capacity of Co3O4 cathode, a cathode of Zn-doped Co3O4 based on carbon cloth with zeolite imidazole-67 (ZIF-67) precursor in aqueous zinc-ion battery was successfully prepared. The Zn-doped Co3O4 cathode had a uniform arrangement in mild aqueous electrolyte, The battery had a high charge/discharge voltage of 2.2 V, a high specific capacity of 196 mA h/g at 1 A/g, outstanding rate capability, and superior cycle stability of 93.2 % capacity retention over 1000 cycles at 5 A/g. The improvement in electrode material provided a new idea for preparing rechargeable aqueous Zn-ion batteries.
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页数:7
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