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In Situ Reconstructed CuPS3-Derived Phosphorus Hybrid Anode for Ultrafast and Durable Sodium/Lithium Storage
Yusha Gao1,2, Zhuoran Lv3, Shiyu Zhang1,2
1State Key Laboratory of High Performance Ceramics, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
Nano Letters
|March 3, 2026
Summary
This study introduces a novel phosphorus anode for batteries that self-reconstructs into a conductive nanocomposite. This design overcomes volume expansion and poor conductivity, enabling high capacity and long cycle life for fast-charging applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Phosphorus anodes offer high theoretical capacity but face challenges like significant volume expansion and low electrical conductivity.
- These issues lead to rapid capacity decay and poor cycling stability, limiting their practical application in high-performance batteries.
Purpose of the Study:
- To develop an in situ self-reconstruction strategy for creating advanced phosphorus-based battery anodes.
- To enhance the electrochemical performance of phosphorus anodes by addressing volume expansion and conductivity limitations.
Main Methods:
- Utilized a copper thiophosphate (CuPS3) precursor for in situ self-reconstruction during battery cycling.
- Characterized the resulting nanocomposite structure composed of phosphorus nanoparticles within a dual-conductive matrix of metallic copper and sodium sulfide.
Main Results:
- The self-reconstructed anode demonstrated a high capacity of 747 mAh g-1 at 0.5 A g-1, outperforming other MPS3 analogues.
- Achieved remarkable cycling stability, retaining ~95% capacity over 7500 cycles at a high rate of 40 A g-1.
- Showcased excellent performance in both sodium-ion and lithium-ion batteries.
Conclusions:
- The proposed in situ self-reconstruction strategy effectively creates a synergistic nanocomposite structure that mitigates volume expansion and enhances ion/electron transport.
- This approach offers a promising pathway for designing high-performance, fast-charging alloy-type anodes for next-generation energy storage systems.
