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Related Experiment Video

Updated: Sep 16, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Three-dimensional spatial plasticizing effect of star-shaped plasticizer for high-performance crosslinked solid

Ji Hu1, Wanhui Wang1, Wen Zhang1

  • 1School of Materials Science and Engineering, School of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang 471023, China.

Journal of Colloid and Interface Science
|July 6, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a novel star-shaped plasticizer for solid polymer electrolytes (SPEs) in lithium metal batteries (LMBs). The new plasticizer enhances ionic conductivity and mechanical strength, leading to improved battery performance and stability.

Keywords:
Lithium metal batteryPlasticizerRigid-flexible coupling frameworkSolid polymer electrolyte

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Solid polymer electrolytes (SPEs) are promising for lithium metal batteries (LMBs) due to processability and electrode compatibility.
  • A key challenge for SPEs is balancing ionic conductivity with mechanical strength.
  • Existing SPEs often struggle with interfacial stability and ion transport efficiency.

Purpose of the Study:

  • To design and synthesize a novel star-shaped plasticizer to enhance crosslinked SPEs for LMBs.
  • To improve both the ionic conductivity and mechanical properties of SPEs.
  • To enhance the stability and performance of the SPE/electrode interface.

Main Methods:

  • A star-shaped plasticizer was synthesized via thiol-acrylate photopolymerization.
  • The plasticizer features a thiol-based crosslinker core with oligomeric polyethylene glycol (PEG) arms.
  • The plasticized SPEs were characterized for ionic conductivity, mechanical properties, and interfacial behavior.

Main Results:

  • The star-shaped plasticizer created a rigid-flexible coupling framework, enhancing mechanical integrity.
  • PEG arms facilitated Li+ transport by improving desolvation kinetics and coordinating with Li+ ions.
  • Improved SPE/electrode interphase stability was observed due to homogeneous Li+ distribution.
  • The plasticized SPEs enabled outstanding cycling performance in assembled LMBs.

Conclusions:

  • The synthesized star-shaped plasticizer effectively enhances the performance of solid polymer electrolytes for lithium metal batteries.
  • This plasticizer offers a viable strategy to overcome the limitations of traditional SPEs by improving ionic conductivity, mechanical strength, and interfacial stability.
  • The developed plasticizer demonstrates significant potential for practical applications in advanced battery technologies.