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Cell-Membrane-Inspired Conjugated Microporous Thermoset Interface for High-Rate and Durable Silicon Anodes
Jinshu Zhang1,2, Lexian Liu1, Yantuo Li1
1Key Laboratory of Quantum Materials and Devices of Ministry of Education, Frontiers Science Center for Mobile Information Communication and Security, School of Physics, Southeast University, Nanjing, China.
Advanced Materials (Deerfield Beach, Fla.)
|July 18, 2026
Summary
Researchers developed a bio-inspired conjugated microporous thermoset (CMT) coating for silicon anodes in lithium-ion batteries. This protective interface enhances stability and capacity, addressing key limitations for next-generation energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Silicon anodes offer high capacity for lithium-ion batteries but suffer from volume expansion and unstable interfaces.
- Existing solutions often involve complex processing or lack scalability.
Purpose of the Study:
- To develop a scalable and effective method for stabilizing silicon anodes.
- To create a bio-inspired protective interface that enhances lithium-ion transport and battery performance.
Main Methods:
- In situ formation of a conjugated microporous thermoset (CMT) coating on silicon particles via a one-step thermosetting process.
- Utilizing a molecular precursor and sequential sublimation, melting, debromination, and polymerization.
- Characterization of the CMT interface's structure, porosity, and chemical composition.
Main Results:
- The CMT coating provides a resilient, crosslinked network accommodating silicon's volume changes.
- Micropores in the CMT facilitate selective Li+ transport while blocking electrolyte.
- Engineered Si@CMT anodes demonstrated high capacity (3130.9 mAh g-1 at 0.1 C) and excellent cycling stability (1838.8 mAh g-1 after 250 cycles at 0.2 C).
Conclusions:
- The bio-inspired CMT interface effectively stabilizes silicon anodes for high-performance lithium-ion batteries.
- This facile and scalable interfacial design presents a promising strategy for next-generation energy storage solutions.
