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.
Original language | English |
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Pages (from-to) | 82-85 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 253 |
DOIs | |
Publication status | Published - 15 Oct 2019 |
Keywords
- Crystal growth
- Cycling performance
- Energy storage and conversion
- Fluoride anion doping
- Li-rich cathode
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering