Ion Substitution Strategy of Manganese‐Based Layered Oxide Cathodes for Advanced and Low‐Cost Sodium Ion Batteries

• Published in: Chemical record Vol. 22; no. 10; pp. e202200122 - n/a
• Main Authors: Chang, Yu‐Xin, Yu, Lianzheng, Xing, Xuanxuan, Guo, Yu‐Jie, Xie, Zhi‐Yu, Xu, Sailong
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 01.10.2022
• Subjects: Batteries; Cathodes; Crystal structure; Electric energy storage; Electrochemical analysis; Electrochemistry; Electrode materials; Energy storage; ion substitution strategy; Low cost; Manganese; manganese-based layered oxides; Oxides; Phase transitions; Redox properties; Sodium; sodium ion battery; Sodium-ion batteries; Specific capacity; Substitutes
• ISSN: 1527-8999; 1528-0691
• DOI: 10.1002/tcr.202200122

Sodium ion batteries (SIBs) have recently been promising in the large‐scale electric energy storage system, due to the low cost, abundant sodium resources. Mn‐based layered oxide cathode materials have been widely investigated, because of the high theoretical specific capacity, low cost, and abundant reserves. However, their development is limited by the problems of Jahn‐Teller distortion, Na+/vacancy ordering, complex phase transitions, and irreversible anionic redox during cycling. Ion substitution strategy is one simple and effective way to regulate the crystal structure and boost sodium‐storage performances of Mn‐based cathode materials. In this review, we summarize the progress and mechanism of ion‐substituted Mn‐based oxides, establish a composition‐crystal structure‐electrochemical performance relationship, and also offer perspectives for guiding the design of high‐performance Mn‐based oxides for SIBs. Manganese‐based oxide cathodes, the most promising candidate for large‐scale energy storage systems of sodium ion batteries (SIBs), are reviewed in terms of ion substitution. The crystal structures and classification of layered oxides are introduced in detail. More importantly, to alleviate challenges such as Jahn‐Teller distortion, Na+/vacancy ordering, complex phase transitions and irreversible anion redox, a composition‐crystal structure‐electrochemical performance relationship is established. This review helps guide the design of high‐performance Mn‐based layered oxide cathodes.