Vanadium oxide cathode pillared by Al3+ and H2O for high-performance aqueous zinc-ion batteries

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Frontiers of Materials Science Pub Date : 2025-09-02 DOI:10.1007/s11706-025-0734-z

Li Xu, Xincheng Wang, Shoubo Li, Wenyu Zhang, Yuchen Wang, Yae Qi

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Abstract

Aqueous zinc-ion batteries (AZBs) are considered safer and potential substitutes for large-scale energy storage and conversion devices. The conventional vanadium pentoxide (V₂O₅) cathode material has attracted widespread attention duo to its typical layered structure and high theoretical capacity. Unfortunately, it still suffers from severe structural collapse, sluggish diffusion dynamics, and fast capacity fading. Herein, we rationally designed and prepared trivalent Al³⁺ and H₂O co-intercalated V₂O₅ (AlVO), in which Al³⁺ plays a “pillar” role and forms strong Al–O bonds, while H₂O acts as the “lubricant”, synergistically maintaining the structural stability and accelerating the diffusion of zinc ions. The Zn//AlVO battery is found to possess not only an impressive reversible capacity of 390.7 mAh·g⁻¹ at 0.5 A·g⁻¹, 5.13 times that of Zn//c-V₂O₅, but also excellent rate capability and long-term cycling performance (with the residual capacity of 138.2 mAh·g⁻¹ over 10000 cycles at 10 A·g⁻¹).

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高性能水性锌离子电池用Al3+和H2O柱状氧化钒阴极

水溶液锌离子电池（azb）被认为是更安全、更有潜力的大规模能量存储和转换装置的替代品。传统的五氧化钒（V2O5）正极材料以其典型的层状结构和较高的理论容量而受到广泛关注。不幸的是，它仍然遭受严重的结构崩溃，缓慢的扩散动力学和快速的容量衰减。为此，我们合理设计并制备了三价Al3+与H2O共插V2O5 (AlVO)，其中Al3+起到“支柱”作用，形成强Al-O键，H2O起到“润滑剂”作用，协同维持结构稳定性，加速锌离子的扩散。锌//AlVO电池在0.5 A·g−1条件下具有390.7 mAh·g−1的可逆容量，是锌//c-V2O5电池的5.13倍，而且具有良好的倍率能力和长期循环性能（在10 A·g−1条件下，10000次循环剩余容量为138.2 mAh·g−1）。

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来源期刊

Frontiers of Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.20

自引率

3.70%

发文量

515

期刊介绍： Frontiers of Materials Science is a peer-reviewed international journal that publishes high quality reviews/mini-reviews, full-length research papers, and short Communications recording the latest pioneering studies on all aspects of materials science. It aims at providing a forum to promote communication and exchange between scientists in the worldwide materials science community. The subjects are seen from international and interdisciplinary perspectives covering areas including (but not limited to): Biomaterials including biomimetics and biomineralization; Nano materials; Polymers and composites; New metallic materials; Advanced ceramics; Materials modeling and computation; Frontier materials synthesis and characterization; Novel methods for materials manufacturing; Materials performance; Materials applications in energy, information and biotechnology.