| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Preparation of Single Crystal LiNi0.75Co0.10Mn0.15O2 Cathode Material by Molten Salt Method |
| YU Yalin1, MO Yan1,2, CHEN Yong1,2,*, LI De1,*
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1 Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
2 School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, Guangdong, China |
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Abstract At present, the development of new cathode materials is mainly devoted to improving their energy density and safety. The single crystal nickel-cobalt-manganese ternary material has become one of the most promising cathode materials, due to its unique properties such as high safety, good thermodynamic and cycle stability. In this paper, single crystal LiNi0.75Co0.10Mn0.15O2 materials were synthesized via LiNO3-LiOH molten-salt assisted sintering, in which the LiOH was used as molten salt and LiNO3 was used as cosolvent to reduce melting temperature. Lower cation mixing of Li+/Ni2+ and homogeneous particle with the size of 1.5—2.5 μm were simultaneously obtained by sintering the mixture at 860 ℃ with the molar ratio of precursor to lithium salt of 1:2. The optimized sample yields high initial capacity of 172.3 mAh/g, and good cycle stability with capacity retention of 86.3% after 100 cycles (2.8—4.4 V, 1C) at room temperature.
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Published: 25 February 2023
Online: 2023-03-02
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| Fund:Key Research and Development Project of Hainan Province (ZDYF2020028) and National Natural Science Foundation of China (52062012). |
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2023, Vol. 37 
