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Related Experiment Video

Updated: Jun 28, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Regenerative Artificial Solid Electrolyte Interphase via Dynamic Cross-Linking for Stable Lithium Metal Anodes.

Ronghui Dou¹, Ruifeng Song¹, Kunchi Xie¹

¹School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China.

Angewandte Chemie (International Ed. in English)

|June 26, 2026

Summary

This summary is machine-generated.

This study introduces a dynamic crosslinked fluoropolymer interphase for stabilizing lithium metal anodes. This innovative material self-heals cracks and replenishes components, significantly enhancing battery longevity.

Keywords:

fluorides interfaces lithium polymers

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Area of Science:

Materials Science
Electrochemistry
Polymer Chemistry

Background:

Artificial solid electrolyte interphases (ASEIs) are crucial for stabilizing lithium metal anodes.
Existing ASEIs degrade due to polymer cracking and inorganic component detachment during battery cycling.

Purpose of the Study:

To develop a novel artificial interphase with self-healing capabilities for lithium metal anodes.
To enhance the stability and cycle life of lithium metal batteries through a regenerative interphase.

Main Methods:

Fabrication of a dynamic crosslinked fluoropolymer (DCF) interphase using poly(2,2,2-trifluoroethyl acrylate) cross-linked by ureido-pyrimidinone.
Investigation of the interphase's self-healing properties via reversible quadruple hydrogen bonds.
Evaluation of continuous LiF formation from the fluorine-rich polymer matrix.
Testing of lithium metal anode stability in symmetric cells and performance in full cells (LiFePO4||Li and NCM622||Li).

Main Results:

The DCF interphase demonstrated autonomous polymer crack healing and continuous replenishment of inorganic SEI components.
Lithium metal anodes protected by the DCF interphase showed stable plating and stripping for over 4000 hours in symmetric cells.
Full cells exhibited excellent capacity retention: 90.67% after 1000 cycles (LiFePO4||Li) and 70% after 700 cycles (NCM622||Li).

Conclusions:

The dual regenerative mechanism of polymer self-healing and inorganic component self-replenishment significantly improves lithium metal anode stability.
The developed DCF interphase offers a promising strategy for creating long-lasting and high-performance lithium metal batteries.