Solid state synthesis of extra phase-pure Li4Ti5O12 spinel
Source abstract
Abstract
Extra phase-pure Li4Ti5O12 spinel with particle sizes less than 500 nm was synthesized by solid state reaction of mechanochemicaly activated mixture of nano anatase and Li2CO3 for a very short annealing time, 4 h at 800?C. Structural and microstructural properties, the mechanism of solid state reaction between anatase and Li2CO3 as well as thermal stability of prepared spinel were investigated using XRPD, SEM and TG/DSC analysis. The mechanism of reaction implies decomposition of Li2CO3 below 250?C, formation of monoclinic Li2TiO3 as intermediate product between 400 and 600?C and its transformation to Li4Ti5O12 between 600-800?C. The spinel structure is stable up to 1000?C when it is decomposed due to Li2O evaporation.
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Research context
OpenAlex topics: Advancements in Battery Materials · Extraction and Separation Processes · Pigment Synthesis and Properties
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Affiliations
Innovation Center, Faculty of Technology & Metallurgy, Belgrade
Department of General and Inorganic Chemistry, Faculty of Technology and Metallurgy, Belgrade
Laboratory of Crystallography, Faculty of Mining and Geology, Belgrade
Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade
Institute for Multidisciplinary Studies, Belgrade
References
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