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Lithophilic yet Inert Interfaces Strategy for Stable Lithium Metal Anodes
Yanyun Zhang1, Guodong Zhang1, Liangping Xiao1
1Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials, Xiamen University, Xiamen 361005, P. R. China.
ACS Nano
|March 5, 2026
Summary
A novel strategy stabilizes lithium (Li) metal anodes using a black phosphorus and metal-organic framework composite (BP@MOFs). This interface enhances Li-ion migration and battery longevity, crucial for advanced energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Lithium (Li) metal anodes are key for high-energy batteries but suffer from reactivity issues.
- Stabilizing Li metal anodes while maintaining lithophilicity is a significant challenge.
Purpose of the Study:
- To develop a "lithophilic yet inert interfaces strategy" for stabilizing Li metal anodes.
- To create a composite material (BP@MOFs) for an artificial interface to protect Li metal anodes.
Main Methods:
- In situ growth of metal-organic frameworks (MOFs) on black phosphorus (BP) to form BP@MOFs.
- Experimental and theoretical analysis to understand the interface's chemical and electronic properties.
- Electrochemical testing of Li plating/stripping and Li-S cells.
Main Results:
- BP@MOFs exhibit high conductivity and porous channels, facilitating Li-ion (Li+) migration.
- Charge transfer between BP and metal ions reduces surface reactivity while preserving lithophilicity.
- Protected Li anodes demonstrated reversible plating/stripping for over 2000 hours.
- Li-S cells with BP@MOF-Li anodes showed 88.1% capacity retention after 500 cycles.
Conclusions:
- The "lithophilic yet inert interfaces strategy" effectively stabilizes Li metal anodes.
- BP@MOFs offer a promising solution for enhancing the performance and cycle life of lithium metal batteries.
- This approach mitigates Li consumption and volume expansion issues in Li anodes.
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