Anchoring and Competition: Weakly Solvated Structure of Glymes Enhances Stability in Lithium Metal Batteries Operating under Extreme Conditions.

ABSTRACT: Lithium metal batteries (LMBs) face challenges from unstable and fragile solid electrolyte interphases (SEIs). In this work, we successfully develop a novel electrolyte by effectively modulating the competitive solvation process in LMBs. In this formulation, the C─O─C motifs of glymes are competitively substituted by other anions and solvents to achieve single oxygen site coordination, thereby facilitating a weak solvation effect. At an apparent concentration of 1.25 M, a solvated sheath enriched with anions and single oxygen-bound complexes is formed, which significantly enhances lithium metal compatibility and promotes rapid desolvation kinetics. The designed electrolyte using weakly solvated structures exhibits remarkable stability at both 25° and 80 °C, enabling the lithium iron phosph

SUBMITTER: Zheng T 

PROVIDER: S-EPMC12462747 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature