Harnessing oxygen vacancy in V2O5 as high performing aqueous zinc-ion battery cathode

•In the present work, oxygen vacancies are introduced into V2O5 lattice for high performing aqueous zinc-ion battery.•The battery reaches an ultra-long cyclic duration of 620 h at 0.2 A g−1 without any significant capacity fading.•The oxygen-deficient V2O5 possesses significantly higher specific cap...

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Bibliographic Details
Published in:Journal of alloys and compounds 2021-07, Vol.870, p.159403, Article 159403
Main Authors: Qi, Zichen, Xiong, Ting, Chen, Tao, Shi, Wen, Zhang, Mingchang, Ang, Zhi Wei Javier, Fan, Huiqing, Xiao, Hong, Lee, Wee Siang Vincent, Xue, Junmin
Format: Article
Language:English
Subjects:
Aqueous zinc-ion battery
Cathodes
Electrochemical analysis
Electrode materials
Energy storage
Flux density
Good stability
High capacity
Lattice vacancies
Lithium
Oxygen
Oxygen vacancy
Rechargeable batteries
Stability
Storage batteries
Storage capacity
Storage systems
V2O5
Vanadium pentoxide
Zinc
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Summary:•In the present work, oxygen vacancies are introduced into V2O5 lattice for high performing aqueous zinc-ion battery.•The battery reaches an ultra-long cyclic duration of 620 h at 0.2 A g−1 without any significant capacity fading.•The oxygen-deficient V2O5 possesses significantly higher specific capacity and better cyclic stability than pristine V2O5. [Display omitted] Rechargeable aqueous zinc-ion batteries (ZIBs) have attracted considerable attention for large-scale energy storage systems due to their high energy density, low cost, and inherent safety. However, ZIBs suffer from limited cyclic stability with the use of the current cathode materials (such as V2O5) due to the strong electrostatic ion–lattice interactions with the diffusing divalent Zn2+, usually leading to a limited cyclic duration (
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2021.159403