Transport Properties of Nanostructured Li2TiO3 Anode Material Synthesized by Hydrothermal Method

Ambadi Lakshmi-Narayana; Obili M. Hussain; Alain Mauger; Christian M. Julien

doi:10.3390/sci1020039

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 25 June 2019 / Approved: 4 July 2019 / Online: 10 July 2019 (00:00:00 CEST)

Li₂TiO₃ nanopowders were synthesized by hydrothermal process using anatase TiO₂ and LiOH H₂O as raw materials. Li₂TiO₃ crystallizes in the layered monoclinic structure (space group C2/c) with average crystallite size of 34 nm. Morphology, elemental composition and local structure of products were carried out using HRTEM, FESEM, EDS, Raman and FTIR spectroscopy. Transport properties investigated by d.c. (4-probe measurements) and a.c. (complex impedance spectroscopy) show the activation energy of 0.71 and 0.65 eV, respectively. The ionic transport properties of Li⁺ ions in nanocrystalline Li₂TiO₃ characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) validate the good electrochemical properties of this anode material for lithium-ion batteries.

hydrothermal reaction; nanoparticles; Li<sub>2</sub>TiO<sub>3</sub>; anode; ionic transport; lithium batteries

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Transport Properties of Nanostructured Li₂TiO₃ Anode Material Synthesized by Hydrothermal Method

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