Lithium storage properties of MOF-on-MOF derived In2O3/Co3O4 heterojunction with ‘‘chocolate-bar’’ structure

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-07-20 DOI:10.1016/j.compositesb.2025.112833

Min Jian , Yuhua Wang , Haijun Zhang , Yao Guo , Yinghui Xue

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引用次数: 0

Abstract

Lithium-ion batteries (LIBs) have become indispensable in modern society, powering a wide range of portable electronics and electric vehicles. Nevertheless, the development of high-performance anode materials remains hindered by challenges such as limited capacity and severe volume fluctuations during lithiation/delithiation. Here, we report a rationally designed MOF-on-MOF derived In₂O₃/Co₃O₄ heterojunction featuring a unique hollow “chocolate-bar” architecture. This structure not only offers a high specific surface area of 1174 m²/g and abundant electroactive sites, but also effectively accommodates volume changes and preserves structural integrity during cycling. Benefiting from the strong synergistic coupling at the In₂O₃–Co₃O₄ interface, as confirmed by DFT calculations, the heterojunction exhibits enhanced electronic conductivity and reduced lithium-ion diffusion barriers. As a result, the In₂O₃/Co₃O₄ electrode delivers a high reversible capacity of 920.5 mAh/g at 0.5C and retains 710.85 mAh/g at 1C with the CE exceeding 99.45 % over 500 cycles. By combining practical and theoretical design techniques, this study demonstrates the prospective of MOF-on-MOF derived heterostructures as a viable platform for creating next generation LIB anodes.

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具有“巧克力棒”结构的MOF-on-MOF衍生In2O3/Co3O4异质结的锂存储性能

锂离子电池（LIBs）在现代社会中已经不可或缺，为各种便携式电子产品和电动汽车提供动力。然而，高性能阳极材料的发展仍然受到诸如有限的容量和锂化/去锂化过程中严重的体积波动等挑战的阻碍。在这里，我们报告了一个合理设计的MOF-on-MOF衍生的In2O3/Co3O4异质结，具有独特的中空“巧克力棒”结构。这种结构不仅提供了1174 m2/g的高比表面积和丰富的电活性位点，而且在循环过程中有效地适应体积变化并保持结构完整性。DFT计算证实，得益于In2O3-Co3O4界面的强协同耦合，异质结表现出增强的电子导电性和降低的锂离子扩散势垒。结果，In2O3/Co3O4电极在0.5C时提供了920.5 mAh/g的高可逆容量，在1C时保持710.85 mAh/g，超过500次循环的CE超过99.45%。通过结合实际和理论设计技术，本研究展示了MOF-on-MOF衍生异质结构作为制造下一代锂离子电池阳极的可行平台的前景。

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

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.