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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
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Dual Dynamic Supramolecular Interaction-Enhanced All-Solid-State Electrolyte for High-Performance Lithium Metal
Xue Wang1,2, Yaohan Chen1, Nannan Zhang1,2
1State Key Laboratory of Polymer Science and Technology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
ACS Applied Materials & Interfaces
|October 16, 2025
Summary
This study enhances polymer electrolytes for solid-state batteries using a dual supramolecular strategy. The new PEO-based electrolytes show improved lithium-ion transport and battery performance.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Chemistry
Background:
- Poly(ethylene oxide) (PEO)-based polymer electrolytes are promising for all-solid-state batteries.
- Insufficient lithium-ion (Li+) transport efficiency in PEO hinders practical application.
- Developing advanced polymer electrolytes is crucial for next-generation energy storage.
Purpose of the Study:
- To enhance Li+ transport efficiency in PEO-based electrolytes.
- To develop a dual supramolecular interaction strategy for improved electrolyte performance.
- To investigate the synergistic effects of novel components on ionic conductivity and battery performance.
Main Methods:
- Introduction of tetrafluoroterephthalonitrile (TFTPN) for Li+ complexation.
- Incorporation of phenylenediboronic acid (PBA) as an anion capturer.
- Utilizing Lewis acid-base interactions and hydrogen bonding for synergistic effects.
Main Results:
- Achieved ionic conductivity of 6.14 × 10-4 S cm-1 at 50 °C and 1.01 × 10-4 S cm-1 at 25 °C.
- Obtained a high Li+ transference number of 0.6 at 50 °C.
- Demonstrated a maximum discharge specific capacity of 130.7 mAh g-1 at 2 C with 81.7% retention after 200 cycles.
Conclusions:
- The dual supramolecular strategy significantly enhances Li+ transport in PEO-based electrolytes.
- Synergistic interactions between TFTPN and PBA improve ionic conductivity and electrochemical stability.
- This approach offers a viable pathway for designing high-performance solid polymer electrolytes for advanced batteries.
Keywords:
all-solid-state lithium metal batteriesdynamic supramolecular interactionelectrolyte additiveinterface stabilitylithium-ion transport efficiencypolymer electrolytesMore Related Videos
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