S and O doped porous carbon hollow bubble for Zn ion capacitors with enhanced energy density and long life

被引：3
|
作者：
Ning, Ke [1 ]
Wei, Mingqi [1 ]
Jiang, Zhenlong [1 ]
Jiang, Tao [1 ]
Zhao, Guangzhen [1 ]
Han, Lu [1 ]
Zhu, Guang [1 ]
Zhu, Yuanyuan [1 ]
机构：
[1] Suzhou Univ, Anhui Higher Educ Inst, Key Lab Spin Electron & Nanomat, Suzhou 234000, Peoples R China
来源：
MATERIALS LETTERS | 2024年 / 355卷
关键词：
Carbon materials; Porous materials; Hollow bubble; Outstanding cyclic stability; Zinc ion capacitors;
D O I：
10.1016/j.matlet.2023.135316
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Zinc ion capacitors (ZICs) as a promising energy storage systems suffer low energy density and poor cyclic stability, leading to increasing attention to the development of porous carbons. Herein, S and O co-doped porous carbon hollow bubble (S-O-PC-HB) was prepared. The obtained S-O-PC-HB displays 3D porous framework structure to shorten the Zn2+ transport path. S and O dopants introduce more defects and then promote Zn2+ storage capability. The S-O-PC-HB as cathode for ZICs exhibits the largest energy density of 95.68 Wh kg-1 at 178 W kg-1. The assembled ZICs delivers a long cycling stability (92.4 % capacity retention after 20,000 cycles), which presents an alternative practice for high-performance ZICs.
引用
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页数：5
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