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Updated: Jun 19, 2025
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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Coordination engineering for iron-based hexacyanoferrate as a high-stability cathode for sodium-ion batteries
Jiang Zhong1, Lirong Xia2, Song Chen1
1State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Physics and Electronics, Hunan Key Laboratory of Two-Dimensional Materials, Engineering Research Center of Advanced Catalysis of the Ministry of Education, Hunan University, Changsha 410082, People's Republic of China.
Summary
Sodium-rich iron-based hexacyanoferrate cathodes were synthesized for sodium-ion batteries (SIBs). This coordination engineering approach significantly improved initial Coulombic efficiency, rate capability, and lifespan for sustainable energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Chemical Engineering
Background:
- Iron-based hexacyanoferrates (Fe-HCF) show promise as cathode materials for sodium-ion batteries (SIBs) due to their open-channel structure.
- Practical SIBs face challenges including low initial Coulombic efficiency (ICE), poor rate performance, and limited lifespan.
Purpose of the Study:
- To develop sodium-rich Fe-HCF cathodes for SIBs using coordination engineering.
- To investigate the structure-electrochemical property relationships in Fe-HCF materials.
- To enable scalable synthesis of high-performance Fe-HCF cathodes.
Main Methods:
- Synthesis of sodium-rich Fe-HCF using a 10-kg-scale chemical reactor with a focus on coordination engineering.
- Systematic investigation of the relationship between coordination surroundings and electrochemical behavior.
- Fabrication and testing of full cells using Fe-HCF cathodes and hard carbon anodes.
Main Results:
- Achieved a reversible capacity of 99.3 mAh g-1 at 5 C and 51 mAh g-1 at 100 C.
- Demonstrated a long cycle life with over 15,000 cycles at 50 C and a high ICE of 92.7%.
- Full cells showed excellent cyclic stability with 98.3% capacity retention over 1,000 cycles.
Conclusions:
- Coordination engineering is crucial for optimizing Fe-HCF cathode performance in SIBs.
- The developed Fe-HCF material exhibits high performance and scalability for sustainable energy storage.
- Controlling nucleation and morphology through coordination engineering is key for advanced SIB cathodes.
Keywords:
Prussian blue analogscoordination engineeringiron-based hexacyanoferratesodium-ion batteriesMore Related Videos
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