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Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate
Published on: February 23, 2016
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Titanate-derived Nb-doped TiO2 nanoparticles displaying improved lithium storage performance
Yubin Liu1, Xiaoyang Pan1, Wenjie Chen1
1College of Chemical Engineering and Materials, Quanzhou Normal University, Quanzhou 362000, China.
Dalton Transactions (Cambridge, England : 2003)
|January 20, 2022
Summary
Niobium-doped titanium dioxide (TiO2) nanoparticles were synthesized for enhanced lithium-ion battery anodes. These doped nanoparticles demonstrate significantly improved lithium-ion storage capacity compared to undoped TiO2.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Titanium dioxide (TiO2) is a promising anode material for lithium-ion batteries.
- Undoped TiO2 suffers from limitations such as low conductivity and poor rate capability.
- Doping TiO2 can enhance its electrochemical performance.
Purpose of the Study:
- To synthesize niobium (Nb)-doped TiO2 nanoparticles using a facile method.
- To investigate the structural and electrochemical properties of Nb-doped TiO2.
- To evaluate the performance of Nb-doped TiO2 as an anode material for lithium-ion batteries.
Main Methods:
- Facile synthesis of Nb-doped TiO2 nanoparticles from a titanate precursor.
- Characterization using X-ray diffraction, Raman spectroscopy, electron microscopy (SEM, TEM), ICP-OES, and XPS.
- Electrochemical testing of synthesized materials as anode materials in lithium-ion batteries.
Main Results:
- Nb-doped TiO2 nanoparticles were successfully synthesized and characterized.
- Nb doping enhanced the lithium-ion storage properties of TiO2.
- Nb-doped TiO2 exhibited a high capacity of 134.1 mA h g-1 at 30 C, compared to 76.8 mA h g-1 for undoped TiO2.
- Improved conductivity due to Nb doping is suggested as the reason for enhanced performance.
Conclusions:
- Nb doping is an effective strategy to improve the electrochemical performance of TiO2 anodes.
- Nb-doped TiO2 nanoparticles show potential as advanced anode materials for high-performance lithium-ion batteries.
