Characteristics, materials, and performance of Ru-containing oxide cathode materials for rechargeable batteries

IF 42.9 Q1 ELECTROCHEMISTRY eScience Pub Date : 2024-10-01 DOI:10.1016/j.esci.2024.100245
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Abstract

Li-rich Mn-based cathode materials have attracted extensive attention due to their remarkable energy density contributed by additional anionic redox. However, they always suffer from some undesired problems impeding their further commercialization such as irreversible oxygen loss, transition metal migration, sluggish kinetics and so on. Fortunately, the above issues can be relieved effectively when 3d metal Mn is replaced by 4d metal Ru. We focus on the recent progress of Ru-containing cathode materials and make a detailed summary in this review. At first, we attempt to combine and elucidate the relationship between oxygen and Ru redox. Subsequently, the up-to-date materials of Ru-based cathode materials for Li+/Na+ batteries are concluded systematically. Afterward, the effects of Ru are discussed in depth including enhancing the reversibility of anionic redox and structural stability, modulating the ratio between cationic and anionic redox, improving the kinetics of Li+/Na+, inhibiting the transition metal migration and so on. More importantly, the future designs of Ru-containing cathode materials are also proposed enlighteningly. We hope this review could offer some new perspectives to comprehend the layered oxides involving anionic redox and provide useful guidelines to achieve better Li+/Na+ rechargeable batteries.

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充电电池用含 Ru 氧化物阴极材料的特性、材料和性能
富锂锰基阴极材料因其额外的阴离子氧化还原作用而具有显著的能量密度,因而受到广泛关注。然而,这些材料始终存在一些问题,如不可逆氧损失、过渡金属迁移、动力学迟缓等,阻碍了它们的进一步商业化。幸运的是,用 4d 金属 Ru 替代 3d 金属 Mn 可以有效地解决上述问题。我们在这篇综述中重点介绍了含 Ru 正极材料的最新进展,并进行了详细总结。我们试图结合并阐明氧与 Ru 氧化还原之间的关系。随后,系统总结了用于 Li+/Na+ 电池的 Ru 基正极材料的最新研究成果。随后,深入讨论了 Ru 的作用,包括增强阴离子氧化还原的可逆性和结构稳定性、调节阳离子和阴离子氧化还原的比例、改善 Li+/Na+ 动力学、抑制过渡金属迁移等。更重要的是,我们还对含 Ru 正极材料的未来设计提出了启发性的建议。我们希望这篇综述能为理解涉及阴离子氧化还原的层状氧化物注入一些新的视角,并为实现更好的 Li+/Na+ 可充电电池提供有用的指导。
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CiteScore
33.70
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