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Electrochemical Performance of LiAlSiO4 Modified High Voltage LiCoO2 Cathode Materials
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Bin SHEN1, Xing XU2, Wanmin LIU1, Mulan QIN1, Weigang WANG1
Journal of the Chinese Ceramic Society | 2022, 50(5) : 1201 - 1208
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Journal of the Chinese Ceramic Society | 2022, 50(5): 1201-1208
• Research Articles •
Electrochemical Performance of LiAlSiO4 Modified High Voltage LiCoO2 Cathode Materials
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Bin SHEN1, Xing XU2, Wanmin LIU1, Mulan QIN1, Weigang WANG1
Affiliations
  • 1.College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411100, Hunan, China
  • 2.State Key Laboratory of Advanced Chemical Power Sources, Guizhou Meiling Power Sources Co. Ltd., Zunyi 563003, Guizhou, China

    • SHEN Bin (1986-), male, Ph.D.. E-mail:

About Author:

SHEN Bin (1986-), male, Ph.D.. E-mail:

Published: 2022-05-20 doi: 10.14062/j.issn.0454-5648.20210656
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Lithium cobalt oxide is a leading cathode material for 3C electronic products because of its high bulk energy density, excellent rate capacity and good cycle performance. The existing gram capacity of lithium cobalt oxide material in practical application is approximately 65% of the theoretical capacity, and this material has a potential for further development. In this paper, a lithium ion cobalt oxide cathode material was coated with lithium ion conductor material LiAlSiO4 by a sol-gel method. The effects of LiAlSiO4 and heat treatment temperature on the structure, morphology and electrochemical properties of the material were investigated. The results show that during the heat treatment, Al3+ enters the LiCoO2 lattice to form a solid solution LiCo1-xAlxO2, and an inert coating layer is formed on the surface of the lithium cobalt oxide particles LiAlSiO4 coating, effectively improving the cycle and rate performance of the lithium cobalt oxide material at a high voltage. The optimum overall performance of the lithium cobalt oxide material coated with LiAlSiO4 can be obtained at a heat treatment temperature of 600 ℃. In a voltage range of 2.75-4.55 V, the specific discharge capacity at room temperature at 0.5 C rate is 209.3 mA·h/g, and the discharge specific capacity after 50 cycles is 201.6 mA·h/g (at a capacity retention rate of 96.3%), and the specific capacity is 160.0 mA·h/g at 8 C.

lithium-ion battery  /  lithium cobalt oxide  /  lithium aluminum silicate  /  high voltage  /  coating modification
申斌, 徐星, 刘万民, 秦牡兰, 王伟刚. LiAlSiO4改性高电压LiCoO2正极材料的电化学性能. 硅酸盐学报, 2022 , 50 (5) : 1201 -1208 . DOI: 10.14062/j.issn.0454-5648.20210656
Bin SHEN, Xing XU, Wanmin LIU, Mulan QIN, Weigang WANG. Electrochemical Performance of LiAlSiO4 Modified High Voltage LiCoO2 Cathode Materials[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (5) : 1201 -1208 . DOI: 10.14062/j.issn.0454-5648.20210656
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Year 2022 volume 50 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.20210656
  • Receive Date：2021-08-11
  • Online Date：2026-10-22
  • Published：2022-05-20
Article Data
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History
  • Received：2021-08-11
  • Revised：2021-10-02
Funding
Affiliations
    1.College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411100, Hunan, China
    2.State Key Laboratory of Advanced Chemical Power Sources, Guizhou Meiling Power Sources Co. Ltd., Zunyi 563003, Guizhou, China

Corresponding:

LIU Wanmin (1979-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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