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- Title
Morphology Control of TiO<sub>2</sub> Nanotubes towards High-Efficient Electrodes for Supercapacitor.
- Authors
WANG Jin; CHEN Guangbing; WANG Chunrui; LI Hui
- Abstract
This article studies the role of electrochemical parameters in controlling the morphology of oxidized TiO2 nanotubes and the electrochemical performance of modified TiO2 nanotubes. Humidity is a key factor for fabricating TiO2 nanotubes. When the relative humidity belows 70%, the TiO2 nanotubes can be successfully prepared. What's more, by changing the anodization voltage and time, the diameter and the length of TiO2 nanotubes can be adjusted. In addition, the TiO2 nanotubes are modified through electrochemical self-doping and loading Pt metal particles on the surface of the nanotubes, which promotes the performance of the supercapacitor. The sample anodized at 100 V for 3 h has a specific capacity of up to 2.576 mF/cm² at a scan rate of 100 mV/s after self-doping, and its capacity retention rate still remains at 89.55% after 5 000 cycles, demonstrating excellent cycling stability. The Pt-modified sample has a specific capacity of up to 3.486 mF/cm² at the same scan rate, exhibiting more outstanding electrochemical performance.
- Subjects
TITANIUM dioxide; NANOTUBES; ELECTRODES; SUPERCAPACITORS; ELECTROCHEMICAL analysis
- Publication
Journal of Donghua University (English Edition), 2024, Vol 41, Issue 4, p377
- ISSN
1672-5220
- Publication type
Article
- DOI
10.19884/j.1672-5220.202405010