Balancing Solvation: Stabilizing Lithium Metal Batteries via Optimized Cosolvents in Ionic-liquid Electrolytes

Authors: Xinlin Li, Xianyang Wu, Seoung-Bum Son, Jorge M Seminario, Perla B Balbuena, Anderson Arboleda, Jiyu Cai, Matthew Li, Ziyuan Lyu, Dominic Bresser, Rachid Amine, Chi Cheung Su, Khalil Amine

Published: 2025-06-25

DOI: 10.1039/d5ee01515d

Source: Full article

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Abstract

In this study, we examined three co-solvents with distinct solvation capabilities for ionic-liquid-based electrolytes, 1-methyl-1-propyl pyrrolidinium bis(fluorosulfonyl)imide (Py13FSI). Among them, we demonstrate that 1,1,1-trifluoro-2-(2-(2-(2,2,2-trifluoroethoxy)ethoxy)ethoxy)ethane (FDG), notably enhances the cycle life...