Zinc ion modulation of hydrated vanadium pentoxide for high-performance aqueous zinc ion batteries

Wu，Jiadong1,2; Yang，Linyu1,2; Wang，Shuying1,2; Yao，Xiaolong1,2; Wang，Jun3; Abliz，Ablat1,2; Xie，Xuefang1,2; Mi，Hongyu4; Li，Haibing5

2024-03-01

10.1016/j.jpowsour.2024.234057

Journal of Power Sources   影响因子和分区

0378-7753

The structure of VO as a cathode material is prone to collapse during repeated embedding/de-embedding of Zn, and the instability of the material limits its application. Introducing metal ions into the VO layer provides larger ion channels, improves cycling kinetics, and acts as a pillar to enhance the structure stability during the charge/discharge process. In this study, ZnVO·0.51HO (ZVOH) is prepared by the hydrothermal method by embedding both Zn and structural water molecules in the VO interlayer. ZVOH is used as the cathode in zinc-ion batteries (ZIBs) with high power and energy densities (∼6779.3 W kg and 289.6 Wh kg) and outstanding cycling stability. Furthermore, the valence changes of vanadium in ZVOH during charging and discharging as well as the morphological changes on the surface of the electrode material are investigated by ex-situ methods. The binding energy of Zn at the sites within ZVOH and the migration energy barrier for Zn migration on the ZVOH surface are also investigated by density functional theory.

0.51H2O Aqueous zinc ion batteries Density functional theory Zn0·2V2O5

SCI ; EI

英语

其他

MATERIALS SCIENCE

2-s2.0-85182520762

Scopus

1.Xinjiang Key Laboratory of Solid State Physics and Devices,Xinjiang University,Urumqi,830046,China
2.School of Physics and Technology,Xin Jiang University,Urumqi,Xinjiang,830046,China
3.School of Innovation and Entrepreneurship,Southern University of Science and Technology,Shenzhen,518055,China
4.School of Chemical Engineering and Technology,Xinjiang University,Urumqi,830046,China
5.Xinjiang Uygur Autonomous Region Research Institute of Measurement and Testing,Urumqi,830011,China

Wu，Jiadong,Yang，Linyu,Wang，Shuying,et al. Zinc ion modulation of hydrated vanadium pentoxide for high-performance aqueous zinc ion batteries[J]. Journal of Power Sources,2024,595.

Wu，Jiadong.,Yang，Linyu.,Wang，Shuying.,Yao，Xiaolong.,Wang，Jun.,...&Li，Haibing.(2024).Zinc ion modulation of hydrated vanadium pentoxide for high-performance aqueous zinc ion batteries.Journal of Power Sources,595.

Wu，Jiadong,et al."Zinc ion modulation of hydrated vanadium pentoxide for high-performance aqueous zinc ion batteries".Journal of Power Sources 595(2024).