Engineering robust solvation sheath for reversible 4 mAh cm−2 AEM-free Cu–Li batteries

Key Points

• The introduction of a robust solvation sheath significantly increases the reversible capacity of Cu–Li batteries.
• The enhanced design achieves a capacity of 4 mAh cm−2, showcasing superior electrochemical performance.
• An experimental approach focused on engineering the solvation sheath contributes to battery longevity.
• This work highlights the potential for advanced battery designs to improve energy storage without traditional membrane systems.