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Updated: Dec 14, 2025

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
Fluorinated carboxylate ester-based electrolyte for lithium ion batteries operated at low temperature
Yang Yang1, Panlong Li, Nan Wang
1Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200433, China. cxwang@fudan.edu.cn xldong@fudan.edu.cn.
Abstract:
A well-formulated electrolyte is proposed based on a fluorinated carboxylate ester solvent, which shows a wide electrochemical window (0-4.73 V, vs. Li+/Li), low solvation energy (10.05 kJ mol-1) and ability to maintain a liquid state at temperatures as low as -120 °C. This electrolyte produced batteries with superior electrochemical performance at low temperatures relative to carbonate-based electrolytes.
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