Related Experiment Video
Updated: Dec 31, 2025
10:41
Three-electrode Coin Cell Preparation and Electrodeposition Analytics for Lithium-ion Batteries
Published on: May 22, 2018
38.6K
Three-Dimensional Superlithiophilic Interphase for Dendrite-Free Lithium Metal Anodes
Yun Qiao1,2, Qingling Li1,2, Xin-Bing Cheng3
1School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang 453007 , China.
ACS Applied Materials & Interfaces
|January 11, 2020
Summary
This study introduces a novel N-rich carbon nanofiber with ZnO granules to prevent lithium dendrite formation in high-energy batteries. This protective layer significantly enhances lithium deposition uniformity and battery performance, improving safety and efficiency.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Lithium metal anodes are crucial for high-energy-density batteries but suffer from dendrite formation, leading to low efficiency and safety concerns.
- Controlling lithium deposition through lithiophilic sites is a key strategy to mitigate these issues.
- Developing protective interlayers is essential for stable lithium metal anode performance.
Purpose of the Study:
- To design and evaluate a three-dimensional lithiophilic N-rich carbon nanofiber decorated with ZnO granules as a protective layer for lithium metal anodes.
- To investigate the synergistic effects of lithiophilic ZnO and N-containing functional groups on lithium adsorption and deposition.
- To demonstrate the improved performance of lithium metal batteries utilizing this protective interlayer.
Main Methods:
- Fabrication of a 3D lithiophilic N-rich carbon nanofiber with ZnO decoration.
- Theoretical evaluation of lithium adsorption and deposition behavior.
- Electrochemical testing of lithium symmetric cells and Li|LiFePO4 full cells.
- Analysis of Coulombic efficiency, overpotential, and cycling stability.
Main Results:
- The lithiophilic interlayer significantly reduced lithium deposition overpotential at various current densities compared to unprotected anodes.
- The average Coulombic efficiency for lithium stripping and plating reached up to 97.4% with the interlayer, compared to 94.0% without.
- Li|LiFePO4 full cells exhibited a high capacity retention rate of 99.6% over 200 cycles with the interlayer, outperforming cells without it (91.0%).
Conclusions:
- The proposed N-rich carbon nanofiber with ZnO decoration effectively suppresses lithium dendrite growth.
- The synergistic effect of lithiophilic ZnO and N-groups promotes uniform lithium deposition and enhances battery performance.
- This lithiophilic interphase offers a promising strategy for developing safe and high-performance lithium metal batteries.
