High Entropy Oxides Modulate Atomic-Level Interactions for High-Performance Aqueous Zinc-Ion Batteries

IF 27.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Pub Date : 2023-10-24 DOI:10.1002/adma.202301538

Kai Du, Yujie Liu, Yunfei Yang, Fangyan Cui, Jinshu Wang, Mingshan Han, Jingwen Su, Jiajun Wang, Xiaopeng Han, Yuxiang Hu

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Abstract

The strong electrostatic interaction between high-charge-density zinc ions (112 C mm⁻³) and the fixed crystallinity of traditional oxide cathodes with delayed charge compensation hinders the development of high-performance aqueous zinc-ion batteries (AZIBs). Herein, to intrinsically promote electron transfer efficiency and improve lattice tolerance, a revolutionary family of high-entropy oxides (HEOs) materials with multipath electron transfer and remarkable structural stability as cathodes for AZIBs is proposed. Benefiting from the unique “cock-tail” effect, the interaction of diverse type metal-atoms in HEOs achieves essentially broadened d-band and lower degeneracy than monometallic oxides, which contribute to convenient electron transfer and one of the best rate-performances (136.2 mAh g⁻¹ at 10.0 A g⁻¹) in AZIBs. In addition, the intense lattice strain field of HEOs is highly tolerant to the electrostatic repulsion of high-charge-density Zn²⁺, leading to the outstanding cycling stability in AZIBs. Moreover, the super selectability of elements in HEOs exhibits significant potential for AZIBs.

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高熵氧化物调节高性能锌离子水电池的原子级相互作用。

高电荷密度锌离子（112 C mm-3）与具有延迟电荷补偿的传统氧化物阴极的固定结晶度之间的强静电相互作用阻碍了高性能水性锌离子电池（AZIB）的发展。在此，为了从本质上提高电子转移效率和提高晶格容限，我们提出了一种具有多路径电子转移和显著结构稳定性的高熵氧化物（HEOs）材料家族，作为AZIB的阴极。得益于独特的“公鸡尾巴”效应，HEOs中不同类型金属原子的相互作用实现了比单金属氧化物更宽的d带和更低的简并性，这有助于方便的电子转移和AZIB中最好的速率性能之一（在10.0 A g-1下为136.2 mAh g-1）。此外，HEOs的强晶格应变场对高电荷密度Zn2+的静电排斥具有高度耐受性，导致AZIB具有优异的循环稳定性。此外，HEOs中元素的超选择性对AZIB表现出显著的潜力。这篇文章受版权保护。保留所有权利。

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

Advanced Materials 工程技术-材料科学：综合

CiteScore

43.00

自引率

4.10%

发文量

2182

审稿时长

2 months

期刊介绍： Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.