Modulating crystal structure and lithium-ion storage performance of high-entropy oxide (CrMnFeCoNiZn)3O4 by single element extraction

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-01-27 DOI:10.1016/j.compositesb.2025.112175

Yanni Li , Baobao Wang , Yulin Wang , Runguo Zheng , Zhishuang Song , Zhiyuan Wang , Yanguo Liu , Dan Wang

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Abstract

High-entropy oxides (HEOs) have attracted attention as a promising anode material for lithium-ion batteries (LIBs), offering tunable element composition, desirable kinetic stability and entropy stabilization. Although the advantages of HEOs anodes with a high-entropy effect have been demonstrated, the impact of each element in certain HEOs is rarely discussed. In this work, a series of HEOs which is a pure spinel structure and a main spinel structure accompanied with an extra secondary rock-salt phase are obtained by single-element extraction based on the spinel-type HEO (CrMnFeCoNiZn)₃O₄. It is demonstrated that the element composition of HEOs plays a key role in the phase structure and electrochemical performance. For the structure, the high valence state cation (Cr, Mn, Fe) is essential for forming the purity spinel phase HEOs. For the electrochemical performance, a portion of Zn and Ni in the HEOs remains in the metal state after the first redox process, which plays a role in stabilizing the structural framework. The introduction of Fe is essential for capacity enhancement. Among the as-prepared HEOs, the (CrMnFeCoNiZn)₃O₄-(Cr) exhibits the most favorable lithium-ion storage performance, delivering an excellent specific capacity of 667.3 mAh g⁻¹ at 0.5 A g⁻¹ after 350 cycles. This work offers a useful strategy for designing elementary HEOs in the energy storage field.

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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.