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Micron-Sized Monodisperse Particle $LiNi_{0.6}Co_{0.2}Mn_{0.2}O_{2}$ Derived by Oxalate Solvothermal Process Combined with Calcination as Cathode Material for Lithium-Ion Batteries
| Content Provider | MDPI |
|---|---|
| Author | Chen, Zhuo Guo, Fangya Zhang, Youxiang |
| Copyright Year | 2021 |
| Description | Ni-rich cathode LiNixCoyMn1-x-yO2 (NCM, x ≥ 0.5) materials are promising cathodes for lithium-ion batteries due to their high energy density and low cost. However, several issues, such as their complex preparation and electrochemical instability have hindered their commercial application. Herein, a simple solvothermal method combined with calcination was employed to synthesize LiNi0.6Co0.2Mn0.2O2 with micron-sized monodisperse particles, and the influence of the sintering temperature on the structures, morphologies, and electrochemical properties was investigated. The material sintered at 800 °C formed micron-sized particles with monodisperse characteristics, and a well-order layered structure. When charged–discharged in the voltage range of 2.8–4.3 V, it delivered an initial discharge capacity of 175.5 mAh g−1 with a Coulombic efficiency of 80.3% at 0.1 C, and a superior discharge capacity of 135.4 mAh g−1 with a capacity retention of 84.4% after 100 cycles at 1 C. The reliable electrochemical performance is probably attributable to the micron-sized monodisperse particles, which ensured stable crystal structure and fewer side reactions. This work is expected to provide a facile approach to preparing monodisperse particles of different scales, and improve the performance of Ni-rich NCM or other cathode materials for lithium-ion batteries. |
| Starting Page | 2576 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma14102576 |
| Journal | Materials |
| Issue Number | 10 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-05-15 |
| Access Restriction | Open |
| Subject Keyword | Materials Electrochemistry Lithium-ion Batteries Ni-rich Cathode Materials Lini0.6co0.2mn0.2o2 Solvothermal Method Micron-sized Monodisperse Particle Sintered Temperature Electrochemical Properties |
| Content Type | Text |
| Resource Type | Article |
