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- Title
氧化铝包覆锂离子电池正极材料的研究进展.
- Authors
徐前进; 徐金钢; 田 朋; 刘坤吉; 高婷婷; 宁桂玲
- Abstract
The performance of lithium-ion battery cathode materials is the development bottleneck of lithium battery technology. Recently, alumina (Al2O3) coated cathode materials have been widely studied in order to improve the cycle life, thermal stability and multiplier properties of lithium-ion batteries. The Al2O3 coatings were divided into three different forms of namely rough, ultra-thin and thick coatings. The role of Al2O3 surface coatings in improving cathode material performance was briefly discussed, such as HF scavenger, physical protective barrier, increasing lithium ion diffusion rate, improving thermal stability of cathode material, reacting with LiPF6 to form electrolyte additive LiPO2F2 and inhibiting Jahn-Teller effect, etc.The surface modification methods were introduced, including impregnation method, precipitation method, dry coating process, sputtering method and atomic layer deposition method, etc.and its influence on the cathode materials of lithium cobaltite (LiCoO2), lithium manganite (LiMn2O4), lithium iron phosphate (LiFePO4) and ternary material (Li-Ni-Co-MnO). At last, the development trend of Al2O3 surface coating and atomic layer deposition technology was prospected.
- Subjects
ATOMIC layer deposition; PRECIPITATION (Chemistry); JAHN-Teller effect; COATING processes; CATHODES; SURFACE coatings; MANGANITE
- Publication
Inorganic Chemicals Industry, 2023, Vol 55, Issue 1, p46
- ISSN
1006-4990
- Publication type
Article
- DOI
10.19964/j.issn.1006-4990.2022-0098