Design of oxygen vacancies homologous heterojunction promoted reversible zinc ion storage

IF 11 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Rare Metals Pub Date : 2025-07-10 DOI:10.1007/s12598-025-03404-w

Hai-Ping Wang, Wen-Xing Miao, Zhi-Yuan Liu, Bo Tao, Kan-Jun Sun, Hui Peng, Guo-Fu Ma

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引用次数: 0

Abstract

Zinc ion batteries (ZIBs) are promising for large-scale energy storage applications, but the technology lacks high-capacity and high-stability cathode materials. Herein, oxygen vacancy-VN/V₂O₃/C (Ov-VN/V₂O₃/C) heterostructural composite was successfully designed and synthesized as high-stability cathode to promote reversible ZIBs. Thanks to the oxygen-vacancy heterojunction features and the transformed amorphous new phase V₁₀O₂₄·12H₂O, Ov-VN/V₂O₃/C provides abundant channels and active sites for Zn²⁺ diffusion and adsorption. Thus, Ov-VN/V₂O₃/C as a cathode material for aqueous ZIBs exhibits excellent a high reversible capacity of 531 mAh g⁻¹ at 0.3 A g⁻¹, good rate performance (446 mAh g⁻¹ at a high current density of 10 A g⁻¹), and good stability (115 mAh g⁻¹ at 20 A g⁻¹ after 5000 cycles). More importantly, Ov-VN/V₂O₃/C//Zn assembled quasi-solid-state batteries also have excellent long-term cycling performance. This work not only obtains high-performance cathode materials, but also provides a new idea for the development of the synthesis of transformational new materials with the synergistic effect of vacancies (defects) and heterojunctions.

Graphical abstract

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氧空位同源异质结的设计促进了锌离子的可逆储存

锌离子电池（zbs）具有大规模储能应用的前景，但该技术缺乏高容量和高稳定性的正极材料。本文成功地设计并合成了氧空位- vn /V2O3/C （Ov-VN/V2O3/C）异质结构复合材料，作为促进可逆ZIBs的高稳定性阴极。Ov-VN/V2O3/C由于氧空位异质结的特点和转化的非晶新相V10O24·12H2O，为Zn2+的扩散和吸附提供了丰富的通道和活性位点。因此，v- vn /V2O3/C作为水性ZIBs的阴极材料，在0.3 a g−1时具有531 mAh g−1的高可逆容量，良好的倍率性能（在10 a g−1的高电流密度下为446 mAh g−1）和良好的稳定性（在5000次循环后，在20 a g−1时为115 mAh g−1）。更重要的是，Ov-VN/V2O3/C//Zn组装的准固态电池还具有优异的长期循环性能。这项工作不仅获得了高性能的正极材料，而且为利用空位（缺陷）和异质结协同效应合成转型新材料的发展提供了新的思路。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.