Low Melting Non-corrosive Asymmetric Thioether-TFSI Li Salts for Solid Polymer Electrolytes

Key Points

• To investigate the impact of asymmetric thioether lithium salts on solid polymer electrolytes for Li-metal batteries.
• Synthesize low-melting asymmetric thioether-TFSI lithium salts.
• Evaluate the crystallinity of poly(ethylene oxide)-based solid polymer electrolytes.
• Assess ionic transport and electrochemical stability under varying temperatures.
• Lower crystallinity enhances ionic transport in solid polymer electrolytes.
• Improved electrochemical stability extends the operating temperature range for Li-metal batteries.
• Novel salts show significant performance gains compared to traditional lithium salts.