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Aqueous zinc-ion battery shows great potential and considerable interest in the energy storage field, and the nanoconfinement of cations in layered oxide cathode is an important approach to realize advanced zinc ion storage on capacity and cycling stability. However, thus far, the conventional hydrothermal/solvothermal route for this nanoconfinement has been restricted to its uncontrollable phase structure and the difficulty on the multiple cation co-confinement simultaneously. Herein, we reported a general, supramolecular self-assembly of ultrathin V2O5 nanosheets using various unitary cations including Na+, K+, Mg2+, Ca2+, Zn2+, Al3+, NH4+ and multiple cations (NH4+ + Na+, NH4+ + Na+ + Ca2+, NH4+ + Na+ + Ca2+ +Mg2+). The unitary cation confinement results in a remarkable increase in the specific capacity and Zn-ion diffusion kinetics, and the multiple cation confinement gives rise to superior structural and cycling stability by multiple cation synergetic pillaring effect. The optimized diffusion coefficient of Zn-ion (7.5×10-8 cm2 s-1) in this assembly series surpasses most of the V-based cathodes reported up to date. Density functional theoretical (DFT) simulation further reveals a declined Zn-ion diffusion barrier by cation confinement due to a significantly weakened interaction between Zn2+ and the dangling oxygen atom of V2O5. Our work develops a novel multiple-cations nanoconfinement strategy toward high-performance cathode for aqueous battery. It also provides new insights into the guest cation regulation of zinc-ion diffusion kinetics through a general, supramolecular assembly pathway.

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• In Copyright
  This is the peer reviewed version of the following article: Multiple Cations Nanoconfinement in Ultrathin V2O5 Nanosheets Enables Ultrafast Ion Diffusion Kinetics Toward High-performance Zinc Ion Battery, which has been published in final form at https://doi.org/10.1002/adma.202312982. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

Keyword: Nanosheets, Battery

Date published: 2024-01-29

Publisher: Wiley

Journal:

• Advanced Materials (ISSN: 09359648) vol. 36 issue. 18

Funding:

• National Natural Science Foundation of China 52171203
• National Natural Science Foundation of China 52371214
• National Natural Science Foundation of China 52101261
• National Natural Science Foundation of China 52131306
• National Natural Science Foundation of China 52302224
• Natural Science Foundation of Jiangsu Province BK20211516
• Natural Science Foundation of Jiangsu Province BK20221179
• National Key Research and Development Program of China 2021YFB2400400
• Fundamental Research Funds for the Central Universities 2242023K5001

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4537

First published URL: https://doi.org/10.1002/adma.202312982

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Updated at: 2025-01-29 12:30:19 +0900

Published on MDR: 2025-01-29 12:30:20 +0900