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Improving cyclic stability of LiCoO2 charged to 4.5 V by using succinic anhydride as co-solvent

  • Changkun Tang
  • Yurong RenEmail author
  • Zhihui Chen
  • Jianning Ding
Original Paper


Enhancing the cutoff charge voltage of LiCoO2 can obviously increase energy density but deteriorate its cyclic stability. To address this issue, succinic anhydride (SA) is chosen as an efficient co-solvent to improve the cyclic stability of LiCoO2 electrode charged to 4.5 V (vs. Li/Li+). LiCoO2/Li half-cell with 10 wt% SA achieves 39% increased discharge capacity after 200 cycles at 0.5 C (1 C = 185 mA h g−1), compared to the one in base electrolyte between 3 and 4.5 V. Additionally, the mechanism of how SA improves the cyclic stability of LiCoO2 under high charge voltage is elucidated by electrochemical impedance spectroscopy, linear sweep voltammetry, scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. All the results consistently show that SA yields a more compact and stable passivation layer on the surface of LiCoO2 than that without SA, leading to the much higher cyclic stability for LiCoO2 electrode at high cutoff voltage.


Lithium cobalt oxide Succinic anhydride Co-solvent Cyclic stability 


Funding information

This project was financially supported by the National Nature Science Foundation of China (No.21576030 and 51304077,U1607127), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (No. 15KJA150002), A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) and also sponsored by Qing Lan Project of Education Department of Jiangsu Province.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest..


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Changkun Tang
    • 1
    • 2
  • Yurong Ren
    • 1
    Email author
  • Zhihui Chen
    • 1
    • 2
  • Jianning Ding
    • 1
    • 2
  1. 1.School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovolatic Science and EngineeringChangzhou UniversityChangzhouChina
  2. 2.Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and TechnologyChangzhou UniversityChangzhouChina

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