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Locally Concentrated Ionic Liquid Electrolytes for Lithium-Metal Batteries
Xu Liu1, Alessandro Mariani1,2, Henry Adenusi3
1Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, 89081 Ulm (Germany), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, UlmKarlsruhe, Germany.
Angewandte Chemie (International Ed. in English)
|February 2, 2023
Summary
Safer lithium metal batteries (LMBs) use non-flammable ionic liquid electrolytes (ILEs). Diluting ILEs with co-solvents creates locally concentrated ionic liquid electrolytes (LCILEs) with improved properties for high-energy batteries.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Ionic liquid electrolytes (ILEs) offer safety and longevity for lithium metal batteries (LMBs).
- High viscosity and slow Li+ transport in ILEs hinder practical application.
- Co-solvent strategies are explored to enhance ILE performance.
Purpose of the Study:
- To summarize recent advancements in locally concentrated ionic liquid electrolytes (LCILEs).
- To review the physicochemical properties, solution structures, and battery applications of LCILEs.
- To provide a future outlook for LCILE development in high-energy-density LMBs.
Main Methods:
- Dilution of ILEs with non-solvating, low-viscosity co-solvents.
- Characterization of physicochemical properties and Li+ transport in LCILEs.
- Evaluation of LCILE performance in LMBs with various high-energy cathode materials.
Main Results:
- LCILEs exhibit reduced viscosity and enhanced Li+ transport compared to traditional ILEs.
- LCILEs demonstrate improved compatibility with lithium metal anodes.
- Successful application of LCILEs in high-energy-density LMBs is shown.
Conclusions:
- LCILEs are a promising electrolyte strategy for next-generation high-energy-density LMBs.
- Further research into LCILEs can unlock improved battery performance and understanding.
- Optimizing LCILEs is crucial for advancing safer and more efficient energy storage solutions.
Keywords:
Ionic Liquid ElectrolytesLithium Metal AnodesLithium-Metal BatteriesLocally Concentrated ElectrolytesNon-Solvating SolventsMore Related Videos
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