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Updated: Jun 30, 2025
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
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Na3V2(PO4)3 Cathode for Room-Temperature Solid-State Sodium-Ion Batteries: Advanced In Situ Synchrotron X-ray Studies
Bidhan Pandit1, Morten Johansen2, Cynthia Susana Martínez-Cisneros1
1Department of Materials Science and Engineering and Chemical Engineering, Universidad Carlos III de Madrid, Avenida de la Universidad 30, 28911 Leganés, Madrid, Spain.
Chemistry of Materials : a Publication of the American Chemical Society
|March 18, 2024
Summary
Researchers developed a core-shell sodium vanadium phosphate (NVP/C) cathode for sodium-ion batteries (NIBs). This NIB demonstrates excellent capacity and cycle life, paving the way for sustainable energy storage solutions.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Sodium-ion batteries (NIBs) are crucial for sustainable energy storage due to abundant materials and potential to replace lithium-ion batteries (LIBs).
- All-solid-state sodium batteries offer advantages in cost, energy density, and safety over LIBs.
- Improving the electrochemical performance, particularly rate capability and lifespan, of sodium vanadium phosphate (Na3V2(PO4)3, NVP) cathodes is essential for NIB advancement.
Purpose of the Study:
- To enhance the electrochemical performance of NVP cathodes for NIBs.
- To develop a core-shell NVP/C structure for improved rate performance and cycling stability.
- To construct and evaluate an all-solid-state NVP/C||Na battery using a NASICON solid electrolyte.
Main Methods:
- A solid-state method was employed to synthesize the core-shell NVP/C cathode material.
- Electrochemical performance was assessed, including reversible capacity, rate capability, and cycling stability.
- Synchrotron-based operando X-ray diffraction was utilized to investigate phase transitions during sodium ion (de)intercalation.
- A NASICON solid electrolyte (Na3.16Zr1.84Y0.16Si2PO12) was integrated to create an all-solid-state NVP/C||Na battery.
Main Results:
- The NVP/C cathode achieved an initial reversible capacity of 106.6 mAh/g at C/10, close to the theoretical value.
- Excellent rate performance was observed, with a reversible capacity of 85.3 mAh/g at 10C and high cyclic retention of 94.2% after 1100 cycles.
- The all-solid-state NVP/C||Na battery demonstrated a reversible capacity of 95 mAh/g at C/10 and 78.3% capacity retention after 1100 cycles.
Conclusions:
- The core-shell NVP/C structure significantly improves the electrochemical performance of NVP cathodes for NIBs.
- The developed all-solid-state sodium battery exhibits promising potential for safe and stable energy storage applications.
- Further research into NVP-based materials and solid electrolytes can accelerate the transition towards sustainable battery technologies.
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