Abstract
Ni-rich layered oxides are receiving increased attention as cathodes due to their high energy density. However, the gradual structural transformation during charging/discharging will lead to capacity degradation. The introduction of pillar elements into the Li slab is beneficial for the lattice stability and cycle performance. Herein, atomic configuration, electronic structure, and electrochemical redox behavior of a Mg-doped LiNiO2 cathode were studied. Analysis of the calculations shows that Mg do** can significantly improve the cycle performance and electronic conductivity, but suppresses the Li mobility to a certain extent in the cathode. The theoretical study gives an insight into the microscopic mechanism of Mg do** to improve the performance of Ni-rich cathode material, which is a necessary supplement to the experimental research.
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He, H., Wen, H., Zhang, H. et al. Effect of Magnesium Substitution on Electrochemical Performances of Layered LiNiO2 Cathode Materials. J. Electron. Mater. (2024). https://doi.org/10.1007/s11664-024-11272-w
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DOI: https://doi.org/10.1007/s11664-024-11272-w