Understanding the stability of the solid electrolyte interphase formed by vinylene carbonate and fluoroethylene carbonate in sodium-ion batteries

Key Points

• The aim is to understand how vinylene carbonate and fluoroethylene carbonate contribute to the stability of the SEI in sodium-ion batteries.
• Evaluated the effects of vinylene carbonate and fluoroethylene carbonate as electrolyte additives.
• Conducted stability analyses of the formed SEI under various conditions.
• Utilized electrochemical measurements to assess battery performance.
• The SEI formed with these additives shows enhanced stability compared to other formulations.
• Electrochemical performance improved, with a significant reduction in undesirable reactions.
• Observation of better cycling stability over extended battery use.