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Localized Medium Concentration Electrolyte with Fast Kinetics for Lithium Metal Batteries
Pengcheng Li1, Zhiqing Zhang1, Ziwei Zhao1
1Department of Mechanical Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta, T6G 1H9, Canada.
Angewandte Chemie (International Ed. in English)
|January 5, 2024
Summary
A new Localized Medium-Concentration Electrolyte (LMCE) offers a cost-effective and eco-friendly alternative for lithium metal anodes. This novel electrolyte demonstrates excellent performance and compatibility, overcoming previous limitations.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Localized high-concentration electrolytes are advanced but costly due to high fluorine content.
- High fluorine content increases production expenses and environmental impact.
Purpose of the Study:
- To develop a novel, cost-effective, and environmentally friendly electrolyte for lithium metal anodes.
- To address the limitations of current high-concentration electrolytes.
Main Methods:
- Designed and produced a Localized Medium-Concentration Electrolyte (LMCE) by diluting a medium-concentration electrolyte.
- Investigated the compatibility and electrochemical performance of LMCE with lithium metal anodes.
Main Results:
- LMCE exhibits ultralow concentration (0.1 M) with remarkable lithium metal anode compatibility.
- Achieved excellent kinetics in various battery configurations (Li/Cu, Li/Li, LiFePO4/Li, NCM811/Li).
- Inhibited aluminum current collector corrosion under high voltage (>4 V) conditions.
Conclusions:
- LMCE offers a groundbreaking approach to creating compatible electrolytes from previously incompatible formulations.
- This innovation opens new possibilities for diverse electrolyte designs, including all-liquid battery systems.
Keywords:
Al CorrosionLithium Metal AnodesLocalized Medium Concentration ElectrolyteUltralow ConcentrationMore Related Videos
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