Surface modification of LiFePO4 by Coatings for Improving of Lithium-ion Battery Properties

High-energy-density, high-safety, long-cycle-life and low-cost lithium-ion batteries are urgently needed for electric vehicle power batteries and energy storage battery markets. As a candidate cathode material, LiFePO4 has attracted extensive attention because of its high theoretical capacity, high...

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Bibliographic Details
Published inInternational journal of electrochemical science Vol. 17; no. 11; p. 221142
Main Authors Zhao, Qun-fang, Yu, Yong-hui, Ouyang, Quan-sheng, Hu, Min-yi, Wang, Chang, Ge, Jian-hua, Zhang, Shu-qiong, Jiang, Guang-hui
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.2022
Subjects
Electrochemical performance
LiFePO4
Lithium-ion batteries
Surface coating
Lithium-ion batteries
Electrochemical performance
Surface coating
LiFePO4
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Summary:High-energy-density, high-safety, long-cycle-life and low-cost lithium-ion batteries are urgently needed for electric vehicle power batteries and energy storage battery markets. As a candidate cathode material, LiFePO4 has attracted extensive attention because of its high theoretical capacity, high safety and low cost. Unfortunately, LiFePO4 suffers from low tap density, poor intrinsic electronic and ionic conductivity, and a slow Li+ diffusion coefficient. On the subject, the surface coating is considered an available method. A suitable surface coating can enhance the surface structure stability of the LiFePO4 material, accelerate the electron and Li+ migration, prevent the side reaction between LiFePO4 electrode and electrolytes and protect LiFePO4 from HF corrosion. Hence, the article discusses the research progress of several typical surface coating materials to improve the electrochemical performance of LiFePO4 in recent years to supply a guide for optimizing the performance of other battery materials.
ISSN:1452-3981
1452-3981
DOI:10.20964/2022.11.31