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| DEVELOPMENT AND INDUSTRIALIZATION PROGRESS OF OLIVINE-TYPE LIB CATHODE MATERIALS FOR ENERGY STORAGE SYSTEMS AND ELCTRIC VEHICLES |
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Received:May 08, 2024
Revised:May 08, 2024
Accepted:May 16, 2024
Published Online:March 24, 2025
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| DOI： |
| KeyWord:lithium-ion batteries; olivine-type cathode materials; industrialization process route; doping; surface coating; new structural design. |
| Author | Institution |
| LIU Yafei |
Beijing General Research Institute of Mining and Metallurgy Technology Group |
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| Abstract: |
| Olivine type LiMePO4 is a one of the most widely commercial cathode materials for lithium-ion batteries, due to its low cost, long cycle life, good safety, and environmental friendliness. However, this type of material has inherent defects such as low electronic conductivity, poor Li+diffusion coefficient, and small pellet density, which hinder its expansion and application in high-performance batteries for energy storage systems, electric vehicles, and aviation. In this paper, the research and development progress of LiMePO4 cathode materials in terms of crystal structure, electronic structure, industrialization process route, existing problems, and modification strategies are comprehensively summarized. The internal mechanisms of doping and nanocrystallization to increase the electrochemical performance are analyzed, and the protective principles such as surface coating and new structural design are outlined in detail. The combination of these modification strategies can effectively improve the electronic conductivity, lithium ion diffusion coefficient, pellet density of LiMePO4, achieving novel battery design with higher rate performance, longer cycle life, and higher energy density. Finally, the future development prospects of olivine-type cathode materials in the directions of energy density improvement, continuous cost reduction, and commercial application for solid-state batteries are discussed. |
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