Co‐Intercalation of Dual Charge Carriers in Metal‐Ion‐Confining Layered Vanadium Oxide Nanobelts for Aqueous Zinc‐Ion Batteries

Vanadium‐based oxides with high theoretical specific capacities and open crystal structures are promising cathodes for aqueous zinc‐ion batteries (AZIBs). In this work, the confined synthesis can insert metal ions into the interlayer spacing of layered vanadium oxide nanobelts without changing the o...

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Published in:Angewandte Chemie International Edition 2023-01, Vol.62 (5), p.e202216089-n/a
Main Authors: Lv, Tingting, Zhu, Guoyin, Dong, Shengyang, Kong, Qingquan, Peng, Yi, Jiang, Shu, Zhang, Guangxun, Yang, Zilin, Yang, Shengyang, Dong, Xiaochen, Pang, Huan, Zhang, Yizhou
Format: Article
Language:English
Subjects:
Aqueous Zinc-Ion
Batteries
Cathodes
Chemical synthesis
Confined
Current carriers
Electrochemical analysis
Electrochemistry
Energy storage
Interlayers
Mechanism
Metal ions
Nanobelts
Nanomaterials
Nanotechnology
Vanadium
Vanadium Oxide
Vanadium oxides
Zinc
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Summary:Vanadium‐based oxides with high theoretical specific capacities and open crystal structures are promising cathodes for aqueous zinc‐ion batteries (AZIBs). In this work, the confined synthesis can insert metal ions into the interlayer spacing of layered vanadium oxide nanobelts without changing the original morphology. Furthermore, we obtain a series of nanomaterials based on metal‐confined nanobelts, and describe the effect of interlayer spacing on the electrochemical performance. The electrochemical properties of the obtained Al2.65V6O13 ⋅ 2.07H2O as cathodes for AZIBs are remarkably improved with a high initial capacity of 571.7 mAh ⋅ g−1 at 1.0 A g−1. Even at a high current density of 5.0 A g−1, the initial capacity can still reach 205.7 mAh g−1, with a high capacity retention of 89.2 % after 2000 cycles. This study demonstrates that nanobelts confined with metal ions can significantly improve energy storage applications, revealing new avenues for enhancing the electrochemical performance of AZIBs. We synthesized a series of metal confined nanomaterials by a one‐step hydrothermal method. The metal ions confined nanobelts can stabilize the layered structure, effectively control the interlayer spacing, and provide a more significant diffusion channel for the intercalation and deintercalation of Zn2+ without changing the oxide morphology.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202216089