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Study on Cycle Performance and Rate Performance of Lithium Cobalt Oxide

by Ningjing He 1,*  and  Chun Chu 1
1
School of School of Public Finance and Taxation, Zhejiang University of Finance and Economics , Hangzhou, China
*
Author to whom correspondence should be addressed.
JGSR  2024 6(4):117; https://doi.org/10.69610/j.gsr.20240930
Received: / Accepted: / Published Online: 1 October 2024
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Abstract

Lithium cobalt oxide (LiCoO2 ) cathode material, with its high energy density and operating voltage, is currently a mainstream material for lithium-ion battery cathodes.   However,  the  crystal  structure  collapse  and  lattice  oxygen  evolution under high-voltage conditions lead to rapid capacity decay, severely limiting its practical applications.   This paper  analyzes the main factors affecting the cycle performance and rate performance of lithium cobalt oxide, considering the physic- ochemical properties of the particles, including elemental content and particle size, and provides a mathematical model linking these properties to electrochemical per- formance.  The study offers insights for the practical production of high-voltage lithium cobalt oxide materials.

At the beginning, we embarked on investigating the correlation between the physicochemical attributes (encompassing elemental composition and particle size) of lithium cobalt oxide and its cycle performance. An Ordinary Least Squares (OLS) linear regression model was formulated, yielding a robust fit with an R-Squared value of 0.94. This model was subsequently optimized through the application of an XGBoost algorithm, achieving an R-Squared value nearing unity, signifying a remarkable enhancement in model accuracy. Visual analysis of the results pinpointed the primary determinants of cycle performance, arranged in descending order of significance: 'Cycle Index,' Mg content, particle size distribution (D10), Zn, and Al.

Then, our attention shifted to examining the link between the aforementioned physicochemical characteristics and the rate performance of lithium cobalt oxide. The Jarque-Bera and Shapiro-Wilk tests confirmed the normality of the data, fulfilling the prerequisites for hypothesis testing. An OLS linear regression model was developed, demonstrating a strong goodness-of-fit with an R-Squared value exceeding 0.8. This model was further honed with an XGBoost model, which achieved an R-Squared score approaching 1, indicating a substantial refinement in model precision. The visualization of model outcomes illuminated the key factors influencing rate performance, ranked in descending order of importance: particle size distribution (D50), Al, Mn, Zn, Mg, Ni, and Fe.

Lastly, we devised an optimal strategy that encompasses the incorporation of strategic doping elements, the utilization of high-temperature sol-gel methods to bolster cycle performance, and coating modifications aimed at enhancing rate performance. This holistic approach fosters the structural stability of lithium cobalt oxide crystals, fortifying their high-potential cycle capabilities, and concurrently elevating their rate performance.

Keywords: Lithium Cobalt Oxide; Physicochemical Properties; Rate Perfor- mance; Cycle Performance; Doping Modification;
Copyright: © 2024 by He and Chu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) (Creative Commons Attribution 4.0 International License). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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ACS Style
He, N.; Chu, C. Study on Cycle Performance and Rate Performance of Lithium Cobalt Oxide. Journal of Globe Scientific Reports, 2024, 6, 117. doi:10.69610/j.gsr.20240930
AMA Style
He N, Chu C. Study on Cycle Performance and Rate Performance of Lithium Cobalt Oxide. Journal of Globe Scientific Reports; 2024, 6(4):117. doi:10.69610/j.gsr.20240930
Chicago/Turabian Style
He, Ningjing; Chu, Chun 2024. "Study on Cycle Performance and Rate Performance of Lithium Cobalt Oxide" Journal of Globe Scientific Reports 6, no.4:117. doi:10.69610/j.gsr.20240930

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References

  1. Dai Xinyi. Modification and Thin Film Preparation of LiCoO2 as Cathode Material for Lithium-Ion Batteries [D]. University of Electronic Science and Technology, 2016.
  2. Shen Bin. Research on Capacity Decay Mechanism and Modification of LiCoO2 Cathode Material [D]. Harbin Institute of Technology, 2017.
  3. Liu Qiaoyun, Qi Xiuxiu, Hao Weiqiang. Research Progress on Modification of LiCoO2 Cathode Material for Lithium Batteries [J]. Power Technology, 2022, 46(12): 1357-1359.
  4. Wang, Minghui, Li, Zhiwei, Chen, Lin. Enhancing the Electrochemical Performance of LiCoO2 Cathode Material by Surface Modification with TiO2 Nanoparticles [J]. Journal of Materials Chemistry A, 2018, 6(45): 22865-22872.
  5. Zhang, Pengfei, Wang, Xiaoming, Zhou, Hongliang. Effect of Fluorine Doping on the Structural and Electrochemical Properties of LiCoO2 Cathode Materials [J]. Journal of Alloys and Compounds, 2019, 782: 756-764.
  6. Zhao, Yuxuan, Yang, Xianming, Chen, Luyao. Synthesis and Electrochemical Performance of Al-Doped LiCoO2 Cathode Materials for Lithium-Ion Batteries [J]. Ceramics International, 2020, 46(8): 10462-10469.
  7. Sun, Yuqing, Wang, Zhixian, Liu, Qiang. Investigation of the Structural and Electrochemical Properties of Mg-Doped LiCoO2 Cathode Materials for Lithium-Ion Batteries [J]. Journal of Solid State Electrochemistry, 2021, 25(2): 461-469.
  8. Lee, Jaehyun, Kim, Hyeonseok, Kim, Jinkwon. Improving the Cycle Stability of LiCoO2 Cathode Materials by Surface Coating with Li2SiO3 [J]. Journal of The Electrochemical Society, 2021, 168(4): 040512.
  9. Xu, Xiaoli, Wang, Zhaoxiang, Wang, Jianying. Enhanced Electrochemical Performance of LiCoO2 Cathode Material Coated with Nanoscale AlPO4 [J]. Electrochimica Acta, 2021, 382: 138307.
  10. Huang, Wenbin, Yang, Xiaoli, Liang, Yong. Investigation on the Structure and Electrochemical Performance of Zr-Doped LiCoO2 Cathode Materials for Lithium-Ion Batteries [J]. Journal of Materials Science & Technology, 2022, 94: 105-113.
  11. Guo, Xiaodong, Chen, Wei, Zhang, Fan. Surface Modification of LiCoO2 with Spinel LiMn2O4 for Improved Cycling Stability and Rate Capability [J]. Journal of Power Sources, 2022, 515: 230621.
  12. Zhou, Ling, Li, Xiaogang, Liu, Zhihui. Structural and Electrochemical Properties of B-Doped LiCoO2 Cathode Materials for Lithium-Ion Batteries [J]. ACS Omega, 2022, 7(21): 18436-18444.
  13. Li, Xuefeng, Zhang, Qiang, Wang, Zhicheng. Enhanced Cycle Stability and Thermal Safety of LiCoO2 Cathode by Surface Modification with Graphene Oxide [J]. Journal of Materials Chemistry A, 2023, 11(3): 1019-1029.
  14. Chen, Jieshan, Liu, Xiaoming, Wu, Lijun. Study on the Synergistic Effect of Nb and Mg Co-Doping on the Structure and Electrochemical Performance of LiCoO2 Cathode Materials [J]. Ionics, 2023, 29(3): 921-930.
  15. Liu, Weiliang, Li, Jian, Wu, Yuxiang. Improved Electrochemical Performance of LiCoO2 Cathode Material by Surface Coating with LaPO4 for Lithium-Ion Batteries [J]. Journal of Electroanalytical Chemistry, 2023, 913: 116125.
  16. Wang, Peng, Chen, Shuying, Liu, Hong. Surface Engineering of LiCoO2 Cathode Materials with Carbon Coating for Enhanced Cycling Stability and Rate Capability [J]. Journal of Materials Science, 2023, 58(12): 4580-4592.
  17. Zhao, Jian, Zhang, Yongming, Chen, Liang. Effect of Surface Modification with ZnO on the Electrochemical Performance of LiCoO2 Cathode Materials [J]. Solid State Ionics, 2023, 380: 116583.
  18. Yang, Min, Sun, Yingying, Du, Hongwei. Improved High-Voltage Performance of LiCoO2 Cathode by Surface Treatment with Boric Acid [J]. Journal of Energy Chemistry, 2023, 37: 123-131.
  19. Wang, Yuxiang, Lu, Yiming, Zhang, Jianming. Synthesis and Characterization of High-Capacity LiCoO2 Cathode Material with Enhanced Stability via Mo Doping [J]. Journal of Materials Chemistry A, 2023, 11: 15678-15688.
  20. Kim, Hyejin, Kim, Donghee, Park, Kwangyeol. Investigation of the Effect of Nb2O5 Surface Coating on the Structural and Electrochemical Properties of LiCoO2 Cathode Materials [J]. Journal of The Electrochemical Society, 2023, 169(12): 090533.