Europium-Doped Lithium Titanate As a Material for the Anodes of Lithium-Ion Batteries

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...

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Published inRussian Journal of Physical Chemistry A Vol. 96; no. 2; pp. 437 - 443
Main Authors Kornev, P. V., Kulova, T. L., Kuz’mina, A. A., Tusseeva, E. K., Skundin, A. M., Klimova, V. M., Koshel’, E. S.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.02.2022
Springer Nature B.V
Subjects
Chemistry
Chemistry and Materials Science
Colloid Chemistry and Electrochemistry
Discharge
Doping
Europium
High temperature
Insertion
Lithium
Lithium-ion batteries
Physical Chemistry
Rechargeable batteries
Solid phase synthesis
anodes
lithium titanate
lithium-ion batteries
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Summary: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.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024422020145