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- W4378803555 abstract "Abstract In recent years, ternary nickel-rich layered oxides have gradually replaced traditional binary cathode materials in the lithium-ion battery market due to their advantages of high energy density and environmental protection. However, their structural instability of cathode materials has seriously affected the cycle performance of the battery. In order to optimize the internal structure of LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523), the modified LiNi 0.5 Co 0.2 Mn 0.3 O 2 was prepared by in situ doping Na and Cl wet grinding solid phase method. After 80 cycles at 1 C, the capacity retention rate was 80.91%, which was higher than that of LiNi 0.5 Co 0.2 Mn 0.3 O 2 by 70.00%. Scanning electron microscopy showed that the surface corrosion of LiNi 0.5 Co 0.2 Mn 0.3 O 2 was effectively alleviated by Na and Cl co-doping. In addition, the band structure, state density and volume changes were obtained by simulation. The results show that the impedance, capacity and capacity retention data are very compatible with the simulation results. Therefore, Na and Cl doping can effectively optimize the internal structure of LiNi 0.5 Co 0.2 Mn 0.3 O 2 and improve its electrochemical performance. The combination of simulation and experiment provides a new approach for the modification of ternary cathode materials." @default.
- W4378803555 created "2023-06-01" @default.
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- W4378803555 date "2023-06-19" @default.
- W4378803555 modified "2023-09-27" @default.
- W4378803555 title "Na and Cl co-doping modified LiNi<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>O<sub>2</sub> as cathode for lithium-ion battery" @default.
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- W4378803555 doi "https://doi.org/10.1088/1361-6528/acda39" @default.
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