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Abstract Spinel-structured lithium titanate (Li4Ti5O12, LTO) has received broad attention as a next-generation anode material for Li+-ion batteries because of its excellent safety and long cycle life. However, calcination at… Click to show full abstract
Abstract Spinel-structured lithium titanate (Li4Ti5O12, LTO) has received broad attention as a next-generation anode material for Li+-ion batteries because of its excellent safety and long cycle life. However, calcination at the high temperatures (>800 °C) is necessary to obtain spinel-phase LTO. This interferes the synthesis of LTO particles as nano-sized material which is advantageous for electrochemical performance. In this study, spinel-structured LTO nanoparticles were synthesized via an ion-exchange process in conjunction with a mild calcination temperature (600 °C). First, Li2TiO3 was prepared by calcination of a LiOH∙H2O/TiO2 (atomic ratio Li/Ti = 2) mixture at 600 °C. Second, the Li+ ions of the layered Li2TiO3 were partially exchanged with H+ ions in HCl solution, resulting in the synthesis of HxLi2−xTiO3 (0
Journal Title: Journal of Alloys and Compounds
Year Published: 2021
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