A new strategy to obtain nano-scale particles of lithium titanate (Li4Ti5O12) by the oxidant peroxo method (OPM).
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2019
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Lithium titanate with spinel structure (Li4Ti5O12) has attracted attention for its potential use as anode in lithium-ion batteries. Usually, this material is obtained by solid-state reaction using high temperatures and considerable time in the calcination. Lithium titanate was synthesized in this study using a new approach of the oxidant peroxo method (OPM). The pure spinel phase was obtained by solid-state reaction utilizing commercial LiOH and TiO2 nanoparticles with surface modified with peroxo-groups (TiO2-OPM). These nanoparticles were synthesized from the peroxo-complex of titanium, formed on the OPM route. The results show that the use of TiO2-OPM as precursor favored the production of Li4Ti5O12 at lower temperature and time when compared to commercial titanium dioxide (TiO2-COM). The greater reactivity of this powder is related to the peroxo-groups present on the surface of the TiO2, since their decomposition generates a great amount of energy that accelerates the reaction.
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Lithium titanate, Ceramics, Peroxo-complexes, Solid state-reaction
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RIBEIRO, L. da S. et al. A new strategy to obtain nano-scale particles of lithium titanate (Li4Ti5O12) by the oxidant peroxo method (OPM). Ceramics International, v. 45, n. 18, p. 23917-23923, dez. 2019. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0272884219320954#:~:text=In%20this%20study%2C%20we%20present,obtained%20from%20the%20OPM%20route.>. Acesso em: 11 out. 2022.