Low-Temperature Electrolyte Design for Lithium-Ion Batteries: Prospect and Challenges

Area of Science:

• Electrochemistry
• Materials Science
• Energy Storage

Background:

• Lithium-ion batteries (LIBs) are vital for electronics and electric vehicles.
• Cold temperatures severely degrade LIB performance due to reduced electrolyte liquidity and ion transport.
• Current thermal protection methods for LIBs are insufficient for extreme cold.

Purpose of the Study:

• To review and summarize advancements in low-temperature electrolyte development for LIBs.
• To provide insights into cation solvation structures for improved low-temperature interfacial behavior.
• To guide the effective design of electrolytes for cold-weather LIB applications.

Main Methods:

• Comprehensive literature review of low-temperature electrolyte components (solvents, salts, additives).
• Analysis of electrolyte properties and performance in various battery systems.
• Examination of cation solvation structures and their impact on interfacial phenomena.

Main Results:

• Identified key factors influencing electrolyte performance at low temperatures.
• Highlighted the importance of electrolyte composition and structure for ion mobility.
• Demonstrated the correlation between solvation structure and electrochemical performance.

Conclusions:

• Low-temperature electrolyte design is critical for expanding LIB applications in cold regions.
• Understanding cation solvation is essential for optimizing interfacial properties.
• This review provides a roadmap for developing high-performance LIBs for extreme environments.