Insights into Cation Migration and Intermixing in Advanced Cathode Materials for Lithium-Ion Batteries

被引：27

作者：

Zhang, Shu ^{[1
]}

Yang, Zhuo ^{[1
]}

Lu, Yong ^{[1
]}

Xie, Weiwei ^{[1
]}

Yan, Zhenhua ^{[1
]}

Chen, Jun ^{[1
]}

机构：

[1] Nankai Univ, Coll Chem, State Key Lab Adv Chem Power Sources, Key Lab Adv Energy Mat Chem,Minist Educ, Tianjin 300071, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2024年 / 14卷 / 36期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

cathode materials; cation migration; lithium-ion batteries; structural failure; RICH LAYERED CATHODE; RECHARGEABLE LITHIUM; OXYGEN-REDOX; OXIDE CATHODE; HIGH-VOLTAGE; STRUCTURAL DEGRADATION; SPINEL CATHODE; LI; NI; ORIGIN;

D O I：

10.1002/aenm.202402068

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cathode materials are the core components of lithium-ion batteries owing to the determination of the practical voltage and effective energy of the battery system. However, advanced cathodes have faced challenges related to cation migration and cation intermixing. In this review, the study summarizes the structural failure mechanisms due to the cation mixing of advanced cathodes, including Ni-rich and Li-rich layered cathodes, spinel, olivine, and disordered rock-salt materials. This review starts by discussing the structural degradation mechanisms caused by cation intermixing in different cathodes, focusing on the electronic structure, crystal structure, and electrode structure. Furthermore, the optimization strategies for effective inhibition of cation migration and rational utilization of cation mixing are systematically encapsulated. Last but not least, the remaining challenges and proposed perspectives are highlighted for the future development of advanced cathodes. The accurate analysis of cation migration using advanced characterization, precise control of material synthesis, and multi-dimensional synergistic modification will be the key research areas for cation migration in cathodes. This review provides a comprehensive understanding of cation migration and intermixing in advanced cathodes. The effective inhibition of cation migration and the rational utilization of cation intermixing will emerge as pivotal and controllable factors for the further development of advanced cathodes. Advanced cathodes have faced challenges related to cation intermixing. This review discusses the structural degradation mechanisms caused by cation intermixing in different cathodes. The optimization strategies for effective inhibition of cation migration including element substitution, surface medication and microstructure control, and rational utilization of cation mixing such as defective engineering and partial cation disordering are systematically encapsulated and summarized. image

引用

页数：35

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