Basic scientific problems of nickel-rich cathode for lithium-ion battery: Regulation and formation mechanism of radially oriented parties

WANG Shuo; WU Wenbin; WANG Xin; REN Li; ZUO Meihua; XING Wangyan; FAN Weifeng; ZHANG Bin; XIANG Wei

doi:10.13801/j.cnki.fhclxb.20230310.002

Volume 40 Issue 10

Oct. 2023

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WANG Shuo, WU Wenbin, WANG Xin, et al. Basic scientific problems of nickel-rich cathode for lithium-ion battery: Regulation and formation mechanism of radially oriented parties[J]. Acta Materiae Compositae Sinica, 2023, 40(10): 5518-5528. doi: 10.13801/j.cnki.fhclxb.20230310.002

Citation:

WANG Shuo, WU Wenbin, WANG Xin, et al. Basic scientific problems of nickel-rich cathode for lithium-ion battery: Regulation and formation mechanism of radially oriented parties[J]. Acta Materiae Compositae Sinica, 2023, 40(10): 5518-5528. doi: 10.13801/j.cnki.fhclxb.20230310.002

Citation:

WANG Shuo, WU Wenbin, WANG Xin, et al. Basic scientific problems of nickel-rich cathode for lithium-ion battery: Regulation and formation mechanism of radially oriented parties[J]. Acta Materiae Compositae Sinica, 2023, 40(10): 5518-5528. doi: 10.13801/j.cnki.fhclxb.20230310.002

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Basic scientific problems of nickel-rich cathode for lithium-ion battery: Regulation and formation mechanism of radially oriented parties

doi: 10.13801/j.cnki.fhclxb.20230310.002

1.
School of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
2.
Yibin Guangyuan Lithium Electric Material CO., LTD., Yibin 644002, China
3.
Yibin Libao New Materials CO., LTD., Yibin 644000, China

Funds: National Natural Science Foundation of China (21805018); Sichuan Sience and Tehnology Program (2022ZHCG0018; 2023NSFSC0117; 2023ZHCG0060); Project Funded by China Postdoctoral Science Foundation (2022M722704); Yibin Sience and Tehnology Program (2022JB005)

Received Date: 2023-01-30
Accepted Date: 2023-03-03
Rev Recd Date: 2023-02-28

Available Online: 2023-03-10

Publish Date: 2023-10-15

Abstract

Abstract

Secondary particle assembed with radial oriented primary grains can inhibit the formation of microcracks and provide a good Li⁺ diffusion path, and it is an ideal morphology for high-end polycrystalline Ni-rich cathode materials. In recent years, some researchers have obtained nickel-rich cathode materials assembed with grains with large length-width ratio by regulating precursor precipitation crystallization and high temperature lithium crystallization. However, the regulation method and formation mechanism of the radially oriented structure of Ni-rich cathode, especially the regulation method of the radially oriented hydroxide precursor and the influence of the key parameters on the radially oriented structure, have not been elaborated. In this paper, the necessity of regulating the radially oriented structure of polycrystalline Ni-rich cathode and the mechanism on enhancing electrochemical performance are introduced. Secondly, the regulation method and formation mechanism of the radially oriented polycrystalline Ni-rich cathode are introduced, including the influence of the key parameters of precipitation crystallization process (pH, ammonia concentration and solid content) on the radially oriented precursor, and the influence of temperature and doping elements induced in calcination process on the maintenance of the oriented structure of precursor. Finally, the challenges facing for the regulation of radially oriented Ni-rich cathode are discussed.
- nickel rich cathode material,
- radially oriented structure,
- hydroxide precursor,
- precipitation crystallization,
- calcination
Long Abstrsct
Innovation Points

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References(34)

References

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