Investigating Element Composition of High-Entropy Layered Oxides: Insights on Performance Influence for Sodium-Ion Batteries.

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-10-02 DOI:10.1021/acs.langmuir.5c03993

Xiangnan Li,Ziya Zhang,Xinyu Tang,Mengdan Zhang,Xiaojian Liu,Hongyu Dong,Baopeng Li,Yanhong Yin,Shu-Ting Yang

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引用次数: 0

Abstract

The application potential of layered oxides for sodium-ion batteries is expanded by the entropy stabilization strategy. However, specific research on the selection of elements and interpretation of the function of high-entropy materials are limited. In this study, we have developed several types of high-entropy materials, NaNi0.25Fe0.15Mn0.3Ti0.1Sn0.05Co0.05Li0.1O2 (HEO-TS), NaNi0.25Fe0.15Mn0.3Ti0.05Sn0.1Co0.05Li0.1O2 (HEO-ST), NaNi0.25Fe0.15Mn0.3Ti0.15Co0.05Li0.1O2 (HEO-Ti), and NaNi0.25Fe0.15Mn0.3Sn0.15Co0.05Li0.1O2 (HEO-Sn). Through the analysis of the physical and electrochemical properties, the introduction of Ti into the transition metal layer enhances air stability and rate performance. It exhibits excellent electrochemical properties under a high voltage. Furthermore, the partial introduction of Sn4+ increases the voltage difference of redox potential and electrochemical polarization. When the transition metal layer contains a large amount of Sn, the material exhibits poor electrochemical properties and struggles to form high crystallinity cathode materials. This work provides a solution for the element design of high-entropy layered oxides and investigates the relationship between the elements and electrochemical properties.

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研究高熵层状氧化物的元素组成：对钠离子电池性能影响的见解。

通过熵稳定策略扩大了层状氧化物在钠离子电池中的应用潜力。然而，对高熵材料的元素选择和函数解释的具体研究还很有限。在这项研究中，我们开发了几种高熵材料，NaNi0.25Fe0.15Mn0.3Ti0.1Sn0.05Co0.05Li0.1O2 (HEO-TS), NaNi0.25Fe0.15Mn0.3Ti0.05Sn0.1Co0.05Li0.1O2 (HEO-ST), NaNi0.25Fe0.15Mn0.3Ti0.15Co0.05Li0.1O2 （HEO-Ti）和NaNi0.25Fe0.15Mn0.3Sn0.15Co0.05Li0.1O2 （HEO-Sn）。通过物理和电化学性能分析，在过渡金属层中引入Ti可以提高空气稳定性和速率性能。它在高电压下表现出优异的电化学性能。此外，Sn4+的部分引入增加了氧化还原电位的电压差和电化学极化。当过渡金属层含有大量Sn时，材料的电化学性能较差，难以形成高结晶度的正极材料。本工作为高熵层状氧化物的元素设计提供了解决方案，并探讨了元素与电化学性能之间的关系。

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

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).