Doping effect of fluoride anion on microstructural and electrochemical properties of lithium-rich cathode materials

Xie, D., Zhou, W., Lin, K., Hu, C., Zheng, P., Hou, X. and Lam, K.-h. (2019) Doping effect of fluoride anion on microstructural and electrochemical properties of lithium-rich cathode materials. Materials Letters, 253, pp. 82-85. (doi: 10.1016/j.matlet.2019.06.047)

Abstract

At present, the lithium-rich metal oxide Li1+zMO2 (M = Ni, Co, Mn, etc.) is one of the promising cathodes materials for high-energy lithium-ion batteries. In this work, we report the effect of different doping amounts of fluoride ions on the microstructural and electrochemical properties of Li[Li0.2Mn0.54Ni0.13Co0.13]O2 cathode material. At low doping levels, the fluoride ions substituted the oxygen ions. When the doped fluorine was more than the theoretical limit of x = 0.15, LiF-based material was attached on the surface of the material, offering better cycling performance of battery. With the doping effect, a discharge capacity of 230 mAh/g and a capacity retention rate of 98% were found respectively, which are better than the pristine electrode.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Lam, Dr Koko
• Authors: Xie, D., Zhou, W., Lin, K., Hu, C., Zheng, P., Hou, X., and Lam, K.-h.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Materials Letters
• Publisher: Elsevier
• ISSN: 0167-577X

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