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锂离子电池三元正极材料因其具备能量密度高、循环寿命长、成本较低等优点，具有广阔的应用前景。然而该材料存在阳离子混排、过渡金属离子溶解、微裂纹、电化学不稳定等问题，导致材料容量衰减较快、循环性和稳定性较差，极大限制了其大规模商业化应用。通过总结三元正极材料存在的主要问题，详细阐述了元素掺杂对材料产生的影响和作用机制，并结合高熵掺杂展望了锂离子电池正极材料未来的发展方向。
Abstract：There is a broad application prospect of ternary cathode materials for lithium-ion batteries due to their advantages of high energy density, long cycle life, and low cost. However, there are some problems as well, such as cation mixing, dissolution of transition metal ions, microcracking, electrochemical instability, etc., which might lead to faster capacity degradation, poorer cycling and stability of the material, greatly limiting its scale of commercial application. By summarizing the main problems of ternary cathode materials, the influence and mechanism of elemental doping on the materials were elaborated in detail, and the future development of cathode materials for lithium-ion batteries was explored in combination with high-entropy doping.
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基本信息:
DOI：10.13705/j.issn.1671-6841.2023208
中图分类号:TM912;TQ131.11
引用信息:
[1]李鹏飞,李威,许春阳,等.锂离子电池三元正极材料掺杂改性研究进展[J].郑州大学学报(理学版),2024,56(05):80-87.DOI:10.13705/j.issn.1671-6841.2023208.
基金信息:
国家自然科学基金面上项目(52272242)
2024-08-08
2024-08-08