Abstract
The influence of Ti doping on the functional properties of the lithium-rich Li1.2(Mn0.67Ni0.17Co0.15Ti0.02)0.8O2 cathode material for lithium-ion batteries was studied. The oxide was synthesized by co-precipitation of the appropriate carbonate precursor followed by a solid-state reaction. Doping 2 at % titanium in the transition metal sites increased the material energy and improved its cycling performance. Evidence in favor of positive doping effect on the kinetics of the processes occurring in the cathode material during cycling was obtained.
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ACKNOWLEDGMENTS
The study was carried out using the research equipment of the Shared Facility Center of Physical Investigation Methods of the Kurnakov Institute of General and Inorganic Chemistry, RAS. The authors are grateful to A.M. Rumyantsev and Yu.M. Koshtyal (Ioffe Physical Technical Institute, RAS) for determining the particle size distribution and performing some of electrochemical measurements and to A.S. Goloveshkin (Nesmeyanov Institute of Organoelement Compounds, RAS) for conducting X-ray powder diffraction experiments.
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This work was supported by the Russian Science Foundation (project no. 20-13-00423).
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Pechen, L.S., Makhonina, E.V., Medvedeva, A.E. et al. Effect of Titanium Doping of Lithium-Rich Cathode Materials. Dokl Phys Chem 502, 7–10 (2022). https://doi.org/10.1134/S0012501622010031
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DOI: https://doi.org/10.1134/S0012501622010031