10 μm-thick MoO3-coated TiO2 nanotubes as a volume expansion regulated binder-free anode for lithium ion batteries
| Autor: | Yong-Tae Kim, Bumgi Heo, Jaeyun Ha, Jinsub Choi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fabrication General Chemical Engineering chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Ion Anode Chemical engineering chemistry Electrode Lithium 0210 nano-technology Layer (electronics) Deposition (law) |
| Zdroj: | Journal of Industrial and Engineering Chemistry. 96:364-370 |
| ISSN: | 1226-086X |
| DOI: | 10.1016/j.jiec.2021.01.048 |
| Popis: | In this study, 10 μm-thick TiO2 nanotube arrays (TNAs) coated with a MoO3 layer were prepared by electrochemical oxidation on titanium foil followed by successive cyclic voltammetric deposition, aiming at the fabrication of a thick binder-free anode with high capacity and good cycling stability for lithium ion batteries (LIBs). Through the evaluation of the electrochemical performance of electrodes prepared under various conditions, the electrode obtained at a precursor concentration of 5 mM showed the best electrochemical performance, exhibiting high reversible capacity and enhanced cycling stability. With the structural advantage and intrinsic characteristics of TNAs, the large volume expansion of MoO3 is successfully accommodated, resulting in 97% retention at a rate of 5 C over 500 cycles and 91% retention even at a high rate of 25 C. |
| Databáze: | OpenAIRE |
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