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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
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Designing electrolytes and interphases for high-energy lithium batteries
Hongli Wan1, Jijian Xu2, Chunsheng Wang3
1Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, USA.
Nature Reviews. Chemistry
|December 14, 2023
Summary
Designing electrolytes to create stable, lithium fluoride (LiF)-rich interphases is key for high-energy lithium-ion batteries. This strategy enhances stability in both aqueous and organic systems, improving performance and lifespan.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- High-energy and stable lithium-ion batteries (LIBs) are critical for electric vehicles and devices.
- Instability of interphases in current LIBs leads to capacity fade due to dendrite formation and cracking.
- Developing stable interfaces is essential for advancing battery technology.
Purpose of the Study:
- To review electrolyte design strategies for forming lithium fluoride (LiF)-rich interphases.
- To explore the benefits of LiF-rich interphases in various battery chemistries.
- To provide principles for enhancing battery performance and longevity.
Main Methods:
- Focuses on electrolyte engineering to promote LiF interphase formation.
- Discusses the role of LiF in aqueous electrolytes to widen electrochemical stability.
- Highlights LiF's function in organic electrolytes to inhibit lithium dendrite growth.
Main Results:
- LiF-rich interphases significantly improve the stability and energy density of aqueous and non-aqueous LIBs.
- Hydrophobic LiF extends the electrochemical stability window of aqueous electrolytes.
- Lithium-phobic LiF effectively suppresses lithium dendrite formation and propagation.
Conclusions:
- Electrolyte design for LiF-rich interphases is a viable strategy for high-energy LIBs.
- These principles are transferable to solid-state batteries and other metal battery systems.
- This approach offers a pathway to long cycle life and improved safety in energy storage devices.
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