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Updated: Feb 4, 2026
10:03
Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
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Exploring a high capacity O3-type cathode for sodium-ion batteries and its structural evolution during an
Xueping Zhang1, Kezhu Jiang1, Shaohua Guo1
1College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China. shguo@nju.edu.cn hszhou@nju.edu.cn.
Chemical Communications (Cambridge, England)
|September 29, 2018
Summary
A novel sodium-ion battery cathode, NaFe0.25Mn0.25Ni0.25Ti0.25O2, shows great electrochemical performance. Its reversible phase transformation during operation is key to its excellent function.
Area of Science:
- Materials Science
- Electrochemistry
- Solid-State Chemistry
Background:
- Sodium-ion batteries (SIBs) are a promising alternative to lithium-ion batteries due to the abundance of sodium.
- Developing high-performance cathode materials is crucial for advancing SIB technology.
- Layered transition metal oxides are extensively studied for their potential in SIB cathodes.
Purpose of the Study:
- To synthesize and characterize a novel O3-layered oxide, NaFe0.25Mn0.25Ni0.25Ti0.25O2.
- To evaluate the electrochemical performance of this material as a cathode in sodium-ion cells.
- To investigate the structural evolution and phase transformations during electrochemical cycling.
Main Methods:
- Solid-state synthesis of NaFe0.25Mn0.25Ni0.25Ti0.25O2.
- Electrochemical testing including galvanostatic cycling and cyclic voltammetry.
- Operando X-ray diffraction (XRD) to monitor structural changes during battery operation.
Main Results:
- Successful synthesis of the O3-layered oxide NaFe0.25Mn0.25Ni0.25Ti0.25O2.
- Excellent electrochemical performance as a cathode material in sodium-ion cells.
- Operando XRD revealed a reversible phase transformation sequence (O3 → O3 + P3 → O1 + P3) during cycling.
Conclusions:
- NaFe0.25Mn0.25Ni0.25Ti0.25O2 is a promising cathode material for sodium-ion batteries.
- The observed reversible phase transformations are critical for the material's stability and performance.
- Further research into understanding and optimizing these phase transitions could lead to enhanced SIBs.
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