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Updated: Jan 27, 2026
10:41
Three-electrode Coin Cell Preparation and Electrodeposition Analytics for Lithium-ion Batteries
Published on: May 22, 2018
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Surface-Bound Silicon Nanoparticles with a Planar-Oriented N-Type Polymer for Cycle-Stable Li-Ion Battery Anode
Jingmin Zhang1, Sijia Fan1, Hui Wang1
1Hubei Key Lab of Electrochemical Power Sources, College of Chemistry & Molecule, Science , Wuhan University , Wuhan 430072 , China.
ACS Applied Materials & Interfaces
|March 16, 2019
Summary
Researchers developed a silicon/polyphenylene composite (Si/PPP) anode for lithium-ion batteries. This innovation significantly improves silicon
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Silicon anodes offer high capacity for lithium-ion batteries but suffer from poor cycle stability and low Coulombic efficiency.
- The structural degradation and electrolyte side reactions of silicon during cycling hinder practical applications.
Purpose of the Study:
- To develop a stable and high-performance silicon anode for advanced lithium-ion batteries.
- To address the challenges of low Coulombic efficiency and capacity fading in silicon anodes.
Main Methods:
- A facile mechanochemical method was employed to synthesize a core-shell Si/polyphenylene composite (Si/PPP).
- The composite features a n-type conductive polyphenylene layer tightly bonded to silicon nanocores.
Main Results:
- The Si/PPP anode achieved a high reversible capacity of approximately 2387 mAh g⁻¹.
- It exhibited excellent cycle stability with 88.5% capacity retention over 500 cycles.
- A high Coulombic efficiency of 99.7% was maintained during extended cycling.
Conclusions:
- The developed Si/PPP composite effectively protects the silicon core, enhancing structural integrity and electrochemical performance.
- This core-shell structure offers a promising strategy for creating high-capacity and cycle-stable silicon anodes for next-generation lithium-ion batteries.
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