Weakly Solvating Electrolytes for Lithium and Post‐Lithium Rechargeable Batteries: Progress and Outlook (Adv. Energy Mater. 25/2025)

Rechargeable Batteries In article number 2501272, Shan Fang, Fanglin Wu, Stefano Passerini, and co-workers provide a comprehensive summary of the weakly solvating electrolyte (WSE) concept and its design principles. The authors systematically explore the mechanism by which solvation structures in WSEs induce the formation of inorganic-rich interphases and their intrinsic correlations with electrochemical performance. They also compare the interfacial characteristics and advantages of WSEs with those of conventional and high-concentration electrolytes. Finally, the review emphasizes the potential of WSEs in next-generation post-lithium-based batteries, while addressing the challenges and outlining future research directions.