1. Synthesis of Y-doped LiNi1/3Co1/3−xMn1/3YxO2 spheres with improved lithium storage.
- Author
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Li, Lin, Zhang, Jiahao, Zheng, Hao, Wang, Shiquan, Liu, Hongying, and Yang, Shui-Jin
- Abstract
The layered nickel-cobalt-manganese LiNi
1/3 Co1/3 Mn1/3 O2 (LNCM) was investigated as commercializable and high reversible capacity cathode material by more and more investigators in recent years. In this paper, the LiNi1/3 Co1/3−x Mn1/3 Yx O2 (x = 0, 0.02, 0.05, 0.10) samples were successfully obtained by a ball milling combined with calcination method. The synthesized LNCM nanocomposites are characterized by different analytical methods. The effect of amount of Y ions doping on the lithium storage performance of LiNi1/3 Co1/3 Mn1/3 O2 was also studied systematically. The Y3+ ions replace the part of Co ions, reducing cation mixing and increasing the diffusion coefficient of Li+ ions in the lattice. It causes the unit cell volume to become larger, and the structure of the material becomes more stable in the intercalation and de-intercalation process of Li+ ions. These test results show that LiNi1/3 Co1/3−0.05 Mn1/3 Y0.05 O2 (Y-0.05 LNCM) sample behaves best electrochemical properties with the specific capacity of 174.8 mAh g–1 at 0.5 C after 100 cycles. [ABSTRACT FROM AUTHOR]- Published
- 2024
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