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Lithiophilic Multichannel Layer to Simultaneously Control the Li-Ion Flux and Li Nucleation for Stable Lithium Metal
Gwangjin Choi1,2, Hun Soo Jang3, Heetae Kim1
1Department of Convergent Energy Materials, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea.
ACS Applied Materials & Interfaces
|July 8, 2024
Summary
A novel lithiophilic multichannel layer (LML) facilitates uniform lithium nucleation and deposition, overcoming challenges in lithium-metal batteries. This advancement enables high-energy-density rechargeable batteries with enhanced stability and performance.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Lithium metal anodes offer high theoretical capacity for next-generation batteries.
- Challenges in lithium nucleation and growth hinder practical application of lithium metal anodes.
- Controlling lithium deposition is crucial for battery stability and performance.
Purpose of the Study:
- To develop a lithiophilic multichannel layer (LML) for controlled lithium nucleation and growth.
- To investigate the efficacy of the LML in enhancing lithium-metal battery performance.
- To enable the practical application of lithium metal anodes in high-energy-density batteries.
Main Methods:
- Fabrication of LML using electroless plating of Ag-plated Al2O3 nanoparticles.
- Integration of LML with a nonwoven separator for uniform ion diffusion.
- Electrochemical testing of LiNi0.8Co0.1Mn0.1O2||Li cells with the LML.
Main Results:
- The LML promotes uniform lithium-ion diffusion and low overpotential for lithium nucleation.
- Dense lithium deposition is achieved on the anode surface.
- Cells with LML maintain over 75% capacity after 100 cycles at 5.0 C.
- Achieved ultrahigh energy density of 1164 Wh kg-1.
Conclusions:
- The LML effectively controls lithium nucleation and growth, enhancing battery cycle life and stability.
- The developed LML is a promising strategy for realizing high-energy-density lithium-metal batteries.
- This approach paves the way for advanced rechargeable battery technologies.
