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Mitigating Concentration Polarization through Acid-Base Interaction Effects for Long-Cycling Lithium Metal Anodes
Junmou Du1, Xiangrui Duan1, Wenyu Wang1
1Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science & Technology, Wuhan, 430074, China.
Nano Letters
|April 13, 2023
Summary
Researchers used ZSM-5 zeolites to stabilize lithium metal anodes in high-energy batteries. This approach improves lithium plating and stripping, enhancing battery performance and longevity.
Area of Science:
- Materials Science
- Electrochemistry
- Chemical Engineering
Background:
- Lithium (Li) metal anodes are crucial for next-generation high-energy-density batteries.
- Nonuniform Li+ transport and uneven Li plating/stripping hinder battery performance.
Purpose of the Study:
- To investigate the interphase acid-base interaction effect for regulating Li plating/stripping.
- To stabilize Li metal anodes using ZSM-5 as a functional interface layer.
Main Methods:
- Utilized ZSM-5 zeolites with ordered nanochannels and acid sites.
- Applied ZSM-5 as an interface layer on thin lithium anodes (50 μm).
- Fabricated and tested pouch cells with LiNi0.95Co0.02Mn0.03O2 cathodes (3.7 mAh cm-2).
Main Results:
- ZSM-5 facilitated Li+ transport and mitigated cell concentration polarization.
- The modified anode demonstrated stable Li plating/stripping behavior.
- Achieved 92% capacity retention over 100 cycles for the pouch cell.
Conclusions:
- The interphase acid-base interaction effectively regulates lithium plating/stripping.
- ZSM-5 modified lithium anodes show promise for high-performance rechargeable batteries.
- This strategy can be extended to other alkali metal anodes.
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