Nanostructured TiO2 as anode material for magnesium-ion batteries
Jumanova R. Rakhymbay G. Abildina A. Avchukir K. Bakhytzhan Y. Vacandio F. Argimbayeva A.
January 2023Springer Science and Business Media Deutschland GmbH
Journal of Solid State Electrochemistry
2023#27Issue 1223 - 233 pp.
The nanotubular structure of titanium dioxide (TiO2) is most suitable for creating high-performance energy storage and conversion devices. This paper reports on the synthesis of an array of nanotubes (NTs) from TiO2 by electrochemical anodization of titanium sheets using electrolytes based on fluorine and glycerol. The results of SEM and X-ray spectral analysis of the obtained material revealed the anatase phase of TiO2 nanotubes with an inner diameter of 96–150 nm and a length of 0.6 ± 0.1 μm. The electrochemical behavior of the resulting electrode was studied in a solution of Mg(TFSI)2 based on ethylene carbonate/dimethyl carbonate (1/1). From the cyclic voltammograms, the diffusion coefficient and rate constant were determined to be 1.51·10−10 cm2·s−1, k = 1.55·10−10 cm·s−1 (reduction), respectively. The value of the Coulomb efficiency at low discharge current is higher (88%) than at high discharge current (56%). At a high discharge current (1C), it is noticeable that the charge capacity in the cathodic process is much higher than in the anodic process.
Anode , Diffusion , Intercalation of Mg2+ , Magnesium-ion batteries , Titanium oxide
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Center of Physical Chemical Methods of Research and Analysis, Al-Farabi Kazakh National University, 050012 Tole bi 96A, Almaty, Kazakhstan
Satbayev University, 050013 Satbayev 22, Almaty, Kazakhstan
Almaty Technological University, 050012 Tole bi, 100, Almaty, Kazakhstan
Aix-Marseille University, CNRS, MADIREL UMR 7246, Marseille cedex 20, 13397, France
Center of Physical Chemical Methods of Research and Analysis
Satbayev University
Almaty Technological University
Aix-Marseille University
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