A Universal Interfacial Reconstruction Strategy Based on Converting Residual Alkali for Sodium Layered Oxide Cathodes: Marvelous Air Stability, Reversible Anion Redox, and Practical Full Cell

Kong, Ling‐Yi; Li, Jiayang; Liu, Hanxiao; Zhu, Yan‐Fang; Wang, Jingqiang; Liu, Yi‐Feng; Zhang, Xinyu; Hu, Haiyan; Dong, Hanghang; Jian, Zhuang‐Chun; Cheng, Chen; Chen, Shuangqiang; Zhang, Liang; Wang, Jiazhao; Chou, Shulei; Xiao, Yao

doi:10.1021/jacs.4c04766

articleJournal of the American Chemical SocietyNov 16, 2024Closed access

A Universal Interfacial Reconstruction Strategy Based on Converting Residual Alkali for Sodium Layered Oxide Cathodes: Marvelous Air Stability, Reversible Anion Redox, and Practical Full Cell

LKLing‐Yi Kong JLJiayang Li HLHanxiao Liu YZYan‐Fang Zhu JWJingqiang Wang

Wenzhou University · University of Wollongong · +1 more institution

PubMed

Indexed incrossrefpubmed

Abstract

Mn-based layered oxide cathodes have attracted widespread attention due to high capacity and low cost, however, poor air stability, irreversible phase transitions, and slow kinetics inhibit their practical application. Here, we propose a universal interfacial reconstruction strategy based on converting residual alkali to tunnel phase Na0.44MnO2 for addressing the above mentioned issue simultaneously, using O3 NaNi0.4Fe0.2Mn0.4O2@2 mol % Na0.44MnO2 (NaNFM@NMO) as the prototype material. The optimized material exhibits an initial capacity and energy density comparable with lithium-ion batteries. The reversible anionic redox behavior and charge compensation mechanism of NaNFM@NMO were analyzed and verified by…

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Topics & keywords

Topics

Keywords

Chemistry
Alkali metal
Redox
Ion
Residual
Sodium
Oxide
Stability (learning theory)

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