The Role of Self-Organized TiO2 Nanotube Thickness on the Electrochemical Performance of Anodes for Li-Ion Microbatteriess
Ghigo C. Sopha H. Sepúlveda M. Hromadko L. Rodriguez-Pereira J. Vacandio F. Dénoue K. Macak J.M. Djenizian T.
October 2024John Wiley and Sons Inc
Energy Technology
2024#12Issue 10
Self-organized TiO2 nanotube (TNT) layers with different thicknesses are prepared by anodization of Ti foils and then characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and electrochemical techniques to be used as potential anodes for Li-ion microbatteries. Electrochemical behaviors between 1 and 190 μm thick electrodes, which are the thickest ever studied layers as electrode, have been evaluated by cyclic voltammetry (CV) and chronopotentiometry at various kinetics. The highest areal capacity is obtained for TNT layers of 190 μm providing an initial discharge capacity of ≈5.3 mAh cm−2 at C/10. At faster kinetics, the ≈80 μm thick TNT layer reveals the best electrochemical behavior by offering 256 μAh cm−2 at 5 C and a good stability for 200 cycles at C/5. The influence of the increasing thickness on the electrochemical performance at fast rates can be attributed to the uncomplete reaction of TNT layers with Li ions and the enhancement of the formation of a solid electrolyte interphase. It is also shown that a very thick electrode is not able to sustain long and very fast cycles due to the mechanical deformations occurring during the successive insertion/extraction of Li ions.
anodes , energy storage , Li-ion microbatteries , TiO2 nanotubes
Text of the article Перейти на текст статьи
Center of Microelectronics in Provence, Flexible Electronics Department, Mines Saint-Etienne, Gardanne, 13541, France
Quartier Notre Dame, Pellenc Energy S.A.S., Route de Cavaillon, Pertuis, 84120, France
Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, Pardubice, 53002, Czech Republic
Central European Institute of Technology, Brno University of Technology, Purkyňova 123, Brno, 612 00, Czech Republic
CNRS, MADIREL Laboratory, UMR 7246, Aix-Marseille University, Marseille, 13397, France
Center of Physical-Chemical Methods of Research and Analysis, Al-Farabi Kazakh National University, Tole bi str., 96A., Almaty, 050012, Kazakhstan
Center of Microelectronics in Provence
Quartier Notre Dame
Center of Materials and Nanotechnologies
Central European Institute of Technology
CNRS
Center of Physical-Chemical Methods of Research and Analysis
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026