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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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Liquid-Phase Filling Carbon with High-Performance Sodium Storage for Sodium-Ion Batteries
Jinting Li1, Nurbiye Sawut1, Kean Chen1
1College of Chemistry and Molecular Sciences, Hubei Key Laboratory of Electrochemical Power Sources, Wuhan University, Wuhan, 430072, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 24, 2025
Summary
A novel liquid-phase filling method enhances hard carbon anodes for sodium-ion batteries (SIBs). This scalable technique improves sodium storage capacity and long-term stability, paving the way for advanced battery materials.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Hard carbon (HC) is the primary anode material for sodium-ion batteries (SIBs).
- Optimizing the layer pore structure of HC is crucial for improving sodium storage performance.
- Existing methods for HC modification can be complex or difficult to scale.
Purpose of the Study:
- To develop a simple, cost-effective, and scalable method for enhancing HC anode performance for SIBs.
- To investigate the effect of a liquid-phase filling strategy on the structural properties and electrochemical performance of HC.
- To demonstrate the potential of the developed HC material for high-performance sodium storage.
Main Methods:
- A liquid-phase filling method was employed, involving filling biomass-derived activated carbon with a graphite-like microcrystalline precursor.
- The filled material was then subjected to high-temperature carbonization to produce liquid-phase filling carbon (LPFC).
- Electrochemical performance was evaluated using HC electrodes prepared via this method, including capacity, coulombic efficiency, and cycling stability.
Main Results:
- The liquid-phase filling treatment successfully reconstructed the graphite-like layer structure of HC.
- The prepared HC electrode exhibited a high sodium storage capacity of 382.4 mA h g-1 at 20 mA g-1 with an initial coulombic efficiency of 82.8%.
- Excellent long-term cycling stability was achieved, with 314.7 mAh g-1 after 200 cycles at 50 mA g-1 and 75.0% capacity retention after 1000 cycles at 200 mA g-1.
Conclusions:
- The liquid-phase filling strategy is an effective and scalable approach for producing high-performance hard carbon anodes for SIBs.
- This method offers a promising pathway for the large-scale preparation of advanced anode materials for next-generation energy storage.
- The enhanced structural properties contribute significantly to improved sodium storage capacity and cycling life.
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