Mg(Al, Fe, Mn, REE)2O4 Spinel Prepared from Pelagic REE-Rich Clays and Application as Magnesium-Ion-Battery Cathodes

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2024-10-22 DOI:10.1021/acsami.4c09480

Peiping Zhang, Tongtong Liu, Jibo Miao, Weikun Ning, Yanbin Sun, Fagui Qiu, Xuefa Shi, Shiding Miao

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Abstract

The oxidation and lattice distortion of spinel oxides used for magnesium-ion battery (MIB) cathodes lead to poor stability and cycling performance. Herein, the highly inverted spinel oxide Mg(Al, Fe, Mn, REE)₂O₄ of i = 0.62 with incorporated rare-earth elements (REE) and decent specific surface area was prepared by utilizing leachate of the pelagic rare-earth-rich clays via a foamed sol–gel/calcination method. Measurements of specific capacity, cycling performance, and multiplicity performance showed that the foamed spinel exhibited distinguished electrochemical performance of MIB. At the current density of 100 mA h^–1, the initial discharge and charge specific capacity were 125.7 mAh g^–1 and 139.7 mAh g^–1, and the reversible discharge and charge specific capacities were maintained as 96.7 mAh g^–1 and 102.4 mAh g^–1 after 200 cycles of charging–discharging. The Mg-ion diffusion rate for MAFMRO was 1.08 × 10^–5 cm² s^–1, which was significantly improved, compared to traditional magnesium spinel anodes. This work highlights an approach for modification of spinel-type cathode materials and the high-value utilization of pelagic clay resources.

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从深海富含稀土元素的粘土中制备的 Mg（Al，Fe，Mn，REE）2O4 尖晶石及其在镁离子电池阴极中的应用

用于镁离子电池（MIB）阴极的尖晶石氧化物的氧化和晶格畸变导致其稳定性和循环性能不佳。在这里，利用富含稀土的浮游粘土的浸出液，通过发泡溶胶-凝胶/煅烧法制备了 i = 0.62 的高度反相尖晶石氧化物 Mg（Al，Fe，Mn，REE）2O4，其中掺入了稀土元素（REE），具有良好的比表面积。比容量、循环性能和倍率性能的测量结果表明，发泡尖晶石具有出色的 MIB 电化学性能。在电流密度为 100 mA h-1 时，初始放电和充电比容量分别为 125.7 mAh g-1 和 139.7 mAh g-1，在充放电循环 200 次后，可逆放电和充电比容量分别保持在 96.7 mAh g-1 和 102.4 mAh g-1。与传统的尖晶石镁阳极相比，MAFMRO 的镁离子扩散速率为 1.08 × 10-5 cm2 s-1，明显提高。这项工作为尖晶石型阴极材料的改性和浮游粘土资源的高值化利用提供了一种方法。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.