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Updated: Jul 27, 2026
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
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A Gradient Nanodomain High-Entropy Polymer Electrolyte Tape for Pressure-Free Solid-State Lithium Batteries
Yu Chen1, Lei Jing1, Wenrui Cai1
1College of Polymer Science and Engineering, Sichuan University, Chengdu, Sichuan, China.
Advanced Materials (Deerfield Beach, Fla.)
|January 17, 2026
Summary
High-entropy polymer electrolytes (HEPEs) with controlled nanodomains offer enhanced mechanical and electrochemical properties for stable lithium metal batteries. This study presents a tri-phase HEPE tape achieving superior performance without external pressure.
Area of Science:
- Materials Science
- Polymer Chemistry
- Electrochemistry
Background:
- High-entropy polymer electrolytes (HEPEs) offer design flexibility but face challenges in controlling nanodomains due to microphase separation.
- Achieving simultaneous improvements in mechanical, electrochemical, and interfacial properties in HEPEs is critical for advanced energy storage.
Purpose of the Study:
- To develop a tri-phase high-entropy polymer electrolyte (HEPE) tape with ultrafine, gradient nanodomains.
- To enhance mechanical, electrochemical, and interfacial properties of HEPEs for stable lithium metal batteries.
Main Methods:
- Synthesized a tri-phase HEPE using polyethylene oxide (PEO), poly (methyl methacrylate) (PMMA), and polyvinylidene fluoride-co-hexafluoropropylene (PVFH).
- Utilized Li+-bond-regulated nanophase separation to create high-entropy microstructures.
- Fabricated a HEPE tape with soft-rigid gradient nanodomains at the single-chain length scale.
Main Results:
- Achieved high room-temperature ionic conductivity (0.24 mS∙cm⁻¹).
- Demonstrated exceptional mechanical properties: strength (22.1 MPa), toughness (87.7 MJ∙m⁻³), and elastic recovery (66.7%).
- Exhibited high interfacial adhesion toughness (325 N∙m⁻²) and stabilized lithium metal anodes for 750 h cycling.
Conclusions:
- The developed HEPE tape shows significant improvements in mechanical, electrochemical, and interfacial properties.
- The tri-component mixing strategy enables high-entropy microstructures for advanced battery performance.
- Solid-state Li|HEPE|NCM811 cells achieve high capacity (205.5 mAh∙g⁻¹) without stack pressure, indicating HEPEs' potential for next-generation batteries.
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