Comparison of different methods for <scp>Li<sub>2</sub><i>M</i>Ti<sub>3</sub>O<sub>8</sub></scp> (<i>M</i> – Co, Cu, Zn) synthesis
Iryna Matsukevich, А. И. Кулак, Volga Palkhouskaya, Valentin Romanovski, Jae Hyeon Jo, Yauhen Aniskevich, Saad G. Mohamed
Abstract
Abstract BACKGROUND Mesoporous powders of lithium titanates Li 2 M Ti 3 O 8 ( M – Co, Cu, Zn) of spinel structure are promising as anode materials for Li‐ion batteries. RESULTS Li 2 M Ti 3 O 8 ( M – Co, Cu, Zn) were obtained by the sol–gel method, using self‐propagating high‐temperature synthesis (SHS) from glycine–citrate–nitrate mixtures, and also by the SHS method from aqueous solutions. The crystal structure, phase composition, microstructure and dispersion of the obtained materials were studied. CONCLUSION It was established that the SHS method for the synthesis of lithium titanates has several advantages compared with the sol–gel method, including not requiring solvents, reduced aggregation of particles, a higher specific surface area and low bulk density of the obtained powders. The electrode obtained on the basis of Zn‐containing Li titanate by the SHS method from glycine–citrate–nitrate mixtures showed the highest charging capacity of 160 mAh g −1 and high cyclic stability. © 2021 Society of Chemical Industry (SCI).