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Lei X, Du H, Li H, Zhang M, Zhang H, Jin Y, Zhang J. Cesium-doped ammonium vanadium bronze nanosheets as high capacity aqueous zinc-ion battery cathodes with long cycle life and superb rate capability. NANOSCALE 2023; 15:18928-18938. [PMID: 37975826 DOI: 10.1039/d3nr04602h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Aqueous zinc-ion batteries (AZIBs) are emerging as a promising candidate for large grid energy storage due to their abundant availability and high safety. To meet long cycle life requirements, developing a stable cathode with high rate capability is of great importance. Herein, cesium-doped ammonium vanadium bronze Cs0.07NH4V4O10·0.28H2O (CNVO) is synthesized and proposed as a potential cathode material in AZIBs. The doping of Cs+ ions expands the interlayer spacing of the (001) plane from 9.7 to 10.5 Å, which leads to enhanced kinetics and a low energy barrier for the intercalation of Zn2+ ions. The as-synthesized CNVO boasts a two-dimensional (2D) sheet-like morphology with a lateral dimension of about 500 and a low thickness of 9 nm, which enables robust stability during cycling. Additionally, the synergistic interactions among Cs, NH4 and V enhance the electrochemical stability of CNVO during the Zn2+/H+ intercalation/deintercalation reactions. The three-pronged approaches make CNVO nanosheet cathodes deliver a high specific capacity of 475.6 mA h g-1 at 0.1 A g-1, a high energy density of 347.4 W h kg-1 at 74.4 W kg-1 and superb cycling stability with 90.1% capacity retention after 5000 cycles at 10 A g-1. Electrochemical studies indicate that Zn2+ ion storage in CNVO is a comprehensive process involving intercalation and pseudocapacitance, with the latter not only providing extra capacity but also facilitating fast charge-discharge capability.
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Affiliation(s)
- Xinyu Lei
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China.
| | - Hao Du
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China.
| | - Haiyang Li
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China.
| | - Meng Zhang
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China.
- Henan Province Engineering Laboratory for High Temperature and Wear-resistant Materials, Zhengzhou, Henan 450001, China
- Henan International Joint Laboratory of Nano-Photoelectric Magnetic Materials, Zhengzhou, Henan 450001, China
| | - Hanlu Zhang
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China.
- Henan Province Engineering Laboratory for High Temperature and Wear-resistant Materials, Zhengzhou, Henan 450001, China
| | - Yiliang Jin
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China.
| | - Jiarui Zhang
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China.
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Liu Y, Xu J, Li J, Yang Z, Huang C, Yu H, Zhang L, Shu J. Pre-intercalation chemistry of electrode materials in aqueous energy storage systems. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214477] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Wu T, Liang W, Lin Y. Facile synthesis of Cu−intercalated MnO2 nanoflakes cathode for enhanced energy storage in zinc−ion batteries. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2021.104172] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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