Bimetallic Ion Intercalation Optimized the Performance of Hydrated Vanadate Cathodes for Aqueous Zinc Ion Batteries

IF 5.5 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2025-02-12 DOI:10.1021/acsanm.4c0661910.1021/acsanm.4c06619

An Xiao, Tengfei Zhou, Dan Xiang, Sijia Zou, Tian Zhang, Longhan Zhang, Qixiong Zhang, Yafei Hou, Yuejin Zhu, Weiping Li, Chaofeng Zhang* and Jing Cuan*,

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引用次数: 0

Abstract

Aqueous zinc ion batteries are gaining prominent attention due to their potentially high safety, low cost, and high volumetric capacity. However, disparities still exist in specific capacity and kinetic performances within the electrode materials of zinc ion batteries. Herein, the electrochemical and kinetic properties of layered vanadium oxide (VOH) nanorods adopting Sr²⁺ and La³⁺ as pillars were investigated systematically. It was shown that (1La,1Sr)-VOH possessed a specific capacity around 345.8 mAh g^–1 at a current density of 1 A g^–1, which was remarkably higher than that of VOH and 1Sr-VOH (208.34 mAh g^–1). Characterizations demonstrated that benefiting from the role of Sr²⁺ and La³⁺ as pillars, (1La,1Sr)-VOH possessed enlarged layer spacing and enhanced zinc ion storage kinetics during electrochemical reactions. The tested zinc ion diffusion coefficient was 1.16 × 10^–11 cm² s^–1, which was much higher than that of VOH (7.31 × 10^–12 cm² s^–1), demonstrating a smooth charge transfer process in the as-synthesized (1La,1Sr)-VOH.

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双金属离子嵌入优化了水合钒酸盐锌离子电池负极的性能

水锌离子电池因其潜在的高安全性、低成本和高容量而受到广泛关注。然而，锌离子电池的电极材料在比容量和动力学性能方面仍然存在差异。本文系统地研究了以Sr2+和La3+为柱的层状氧化钒（VOH）纳米棒的电化学和动力学性能。结果表明，(1La,1Sr)-VOH在电流密度为1 a g-1时的比容量约为345.8 mAh g-1，明显高于VOH和1Sr-VOH的208.34 mAh g-1。表征结果表明，得益于Sr2+和La3+作为柱的作用，(1La,1Sr)-VOH在电化学反应过程中具有较大的层间距和增强的锌离子存储动力学。锌离子扩散系数为1.16 × 10-11 cm2 s-1，远高于VOH (7.31 × 10-12 cm2 s-1)，表明在合成的(1La,1Sr)-VOH中电荷转移过程平稳。

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.