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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Nitrogen-enriched precursor lowers debromination temperature for solid-state polymerization into high-performance

Yang Yang¹, Jinshu Zhang¹, Yantuo Li^1,2

¹School of Physics, Key Laboratory of Quantum Materials and Devices of Ministry of Education, Frontiers Science Center for Mobile Information Communication and Security, Southeast University, Nanjing 211189, China. 101012931@seu.edu.cn.

Chemical Communications (Cambridge, England)

|March 16, 2026

Summary

Researchers enhanced lithium storage by creating a nitrogen-rich network through solid-state polymerization. Doubling nitrogen atoms in the precursor enabled this robust material with high capacity and stability.

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Area of Science:

Materials Science
Electrochemistry
Organic Chemistry

Background:

Developing advanced materials for energy storage is crucial.
Nitrogen-rich conjugated polymers show promise for lithium-ion batteries.
Controlling polymerization for robust network formation is challenging.

Purpose of the Study:

To investigate the effect of pyridinic nitrogen content on polymerization.
To synthesize a novel nitrogen-rich π-conjugated network for lithium storage.
To evaluate the electrochemical performance of the synthesized material.

Main Methods:

Synthesis of nitrogen-rich precursors.
Solid-state polymerization under mild conditions.
Electrochemical testing for lithium storage capacity and cycling stability.

Main Results:

Doubling pyridinic nitrogen atoms significantly lowered the debromination onset temperature.
Successful formation of a robust, nitrogen-rich π-conjugated network.
Achieved a reversible lithium storage capacity of ~910 mA h g^-1 at 0.1 A g^-1.
Demonstrated outstanding cycling stability.

Conclusions:

Pyridinic nitrogen content is a key factor in enabling mild-condition polymerization.
The synthesized nitrogen-rich network is a promising anode material for lithium-ion batteries.
This approach offers a pathway to high-performance, stable energy storage materials.