Non‐Flammable Ester Electrolyte with Boosted Stability Against Li for High‐Performance Li Metal Batteries
نویسندگان
چکیده
Abstract In traditional non‐flammable electrolytes a trade‐off always exists between non‐flammability and battery performance. Previous research focused on reducing free solvents forming anion‐derived solid‐electrolyte interphase. However, the contribution of solvated anions in boosting stability electrolyte has been overlooked. Here, we resolve this via introducing into Li + solvation sheaths using with similar Gutmann donor number (DN) to that solvents. Taking trimethyl phosphate fire‐retardant (DN=23.0 kcal mol −1 ) NO 3 − (DN=22.2 as an example, is readily involved sheath reduces polarity solvent. This results boosted against Li. The developed low viscosity, high ionic conductivity cost. reversibility Li‐Cu cell was improved 99.49 % lifespan practical LMBs extended by >100 %.
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ژورنال
عنوان ژورنال: Angewandte Chemie
سال: 2022
ISSN: ['1521-3773', '1433-7851', '0570-0833']
DOI: https://doi.org/10.1002/ange.202206682