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Biomimetic Spring Effect Construction to Stabilize Electrode/Electrolyte Interface for High-Performance Lithium Metal
Zhenghao Zhao1, Tingting Su1, Tianyi Yang1
1Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, China.
Chemsuschem
|November 17, 2025
Summary
Researchers created a biomimetic spring layer to stabilize lithium metal anodes in batteries. This artificial interface layer prevents dendrite growth, enabling longer battery life and improved performance for high-energy storage applications.
Area of Science:
- Materials Science
- Electrochemistry
- Battery Technology
Background:
- Lithium (Li) metal anodes offer high energy density but suffer from dendrite formation and interface instability.
- Existing solid electrolyte interphase (SEI) layers struggle to maintain structural integrity during Li plating/stripping.
Purpose of the Study:
- To develop a stable artificial SEI layer for Li metal anodes using a biomimetic approach.
- To enhance the structural stability and electrochemical performance of Li metal anodes.
Main Methods:
- Constructed a self-assembled biomimetic spring (SABS) layer on Li anode via electrolyte additive engineering.
- Investigated the SABS layer's ability to resist volume changes and induce uniform Li deposition.
- Tested the electrochemical performance of Li anodes with SABS in Li-S full batteries.
Main Results:
- The SABS layer effectively resisted Li anode volume changes, maintaining SEI structure and hindering dendrite growth.
- Li anodes with SABS demonstrated stable plating/stripping reversibility and extended cycle life (>4800 h).
- Li-S full batteries with SABS retained high capacity (410 mAh g⁻¹ after 900 cycles at 1C) and showed excellent rate capability (390 mAh g⁻¹ at 3C).
Conclusions:
- The biomimetic spring effect provides a novel strategy for stabilizing the electrode/electrolyte interface in Li metal anodes.
- SABS layer technology opens new possibilities for high-performance, next-generation energy storage batteries.
