Abstract
Lithium titanate doped with europium (0.2 to 2.0 wt %) is prepared via high-temperature solid-phase synthesis. Processes of the lithium insertion into such a material are studied. It is established that doping with europium allows the final potential of the reversible insertion of lithium to 0.01 V to be shifted. It also contributes to an increase in the specific discharge capacity, a reduction in the specific irreversible capacity, and a drop in the polarization of electrodes. It is found that the specific discharge capacity of samples with doping of 1.0–1.6 wt % is 214 mA h/g at a current of 20 mA/g and ~50 mA h/g at a current of 3200 mA/g.
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ACKNOWLEDGMENTS
Our physicochemical studies were performed on equipment at the Kurnakov Institute of General and Inorganic Chemistry’s shared resource center.
Funding
This work was supported by the RF Ministry of Science and Higher Education. Research on means of chemical analysis was funded by a grant from the Russian Science Foundation, project no. 20-13-00180.
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Kornev, P.V., Kulova, T.L., Kuz’mina, A.A. et al. Europium-Doped Lithium Titanate As a Material for the Anodes of Lithium-Ion Batteries. Russ. J. Phys. Chem. 96, 437–443 (2022). https://doi.org/10.1134/S0036024422020145
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DOI: https://doi.org/10.1134/S0036024422020145