Novel High-Entropy oxide Achieves high capacity and stability as an anode for Lithium-Ion batteries

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2024-10-24 DOI:10.1016/j.matlet.2024.137521

Chengjiao Che , Jianqiang Bi , Xihua Zhang , Yao Yang , Hongyi Wang , Jiacheng Rong

引用次数: 0

Abstract

High-entropy oxides possess high theoretical capacity, stable chemical structure, making them highly promising as battery electrode materials. The limited successful synthesis of high-entropy oxide systems has hindered their further development. This study synthesized a six-component high-entropy spinel oxide (FeCoMgCrLiZn)₃O₄ for the first time and evaluated its electrochemical performance as an anode for lithium-ion batteries. The data show that this single-phase oxide exhibits a high reversible capacity (stabilizing at 800 mAh/g after 300 cycles at 200 mA/g), good cycling stability (800 stable cycles at 2000 mA/g without significant capacity decay), and excellent rate performance. This study expands the high-entropy oxide family and provides a potential strategy for developing next-generation energy storage materials.

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新型高熵氧化物作为锂离子电池阳极可实现高容量和稳定性

高熵氧化物理论容量高、化学结构稳定，因此极有希望成为电池电极材料。高熵氧化物体系的合成成功率有限，阻碍了它们的进一步发展。本研究首次合成了六组分高熵尖晶石氧化物 (FeCoMgCrLiZn)3O4，并评估了其作为锂离子电池负极的电化学性能。数据显示，这种单相氧化物具有较高的可逆容量（在 200 mA/g 下循环 300 次后，容量稳定在 800 mAh/g）、良好的循环稳定性（在 2000 mA/g 下稳定循环 800 次，容量无明显衰减）和优异的速率性能。这项研究扩展了高熵氧化物家族，为开发下一代储能材料提供了一种潜在的策略。

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

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive