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Updated: May 27, 2026
10:03
Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
Cationic Potential-Driven Surface Reconstruction Enables Stable High-Voltage Cylindrical Sodium-Ion Batteries.
Yuansheng Shi1, Chenguang Zhang1, Kaili Li2
1School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.
Advanced Materials (Deerfield Beach, Fla.)
|May 26, 2026
Summary
Researchers developed a new surface reconstruction strategy for sodium-ion batteries. This method creates a stable O3-core@P2-shell structure, enhancing energy density and battery lifespan for practical applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Sodium-ion batteries face a trade-off between high capacity and structural stability.
- O3/P2 multiphase heterostructures are a theoretical solution, but scalable synthesis with precise phase distribution is challenging.
Purpose of the Study:
- To develop a scalable synthesis strategy for O3/P2 heterostructures in sodium-ion battery cathodes.
- To engineer the interface of O3-type layered cathodes for improved electrochemical performance.
Main Methods:
- A cationic-potential-driven surface reconstruction strategy was employed.
- A high-ionic-potential modifier was used to create a P2 shell on an O3 core.
- The material was tested in 1.5 Ah 18650 high-voltage cylindrical batteries.
Main Results:
- A homogeneous O3-core@P2-shell structure with a coherent epitaxial interface was successfully synthesized.
- The heterostructure suppressed oxygen release and transition metal migration, enhancing stability.
- The material retained 76.3% capacity after 400 cycles (2 C, 2.0-4.4 V), outperforming the pristine material (47.8%).
- Scaled-up batteries (550 g/batch) maintained 82% capacity after 400 cycles.
Conclusions:
- The developed strategy enables atomic-level precision in mass production for sodium-ion battery cathodes.
- This approach offers a viable pathway towards high-energy-density and long-life sodium-ion energy storage.
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