锂离子电池单离子导体聚合物电解质研究进展

Research Progress on Single Ion Conductor Polymer Electrolyte for Lithium-ion Batteries

锂离子电池在3C电子产品和动力汽车电池行业广泛应用,在航天电源领域也展现出一定的前景。单离子导体是基本仅由参与电化学反应的锂离子迁移的电解质体系,解决传统锂离子电池液态电解质存在的副反应和阴离子的浓差极化等问题,改善电池的库伦效率和循环寿命。研究者们发展了多种类型的单离子导体电解质。本文总结了近5年来不同阴离子类型的单离子导体聚合物电解质合成策略以及分子动力学模拟计算的最新进展。

Lithium-ion batteries have been widely used in 3C electronic products and power car batteries,and have shown certain prospects in the field of aerospace power supply.Single ion conductor is an electrolyte system basically transported by the lithium ions participating in electrochemical reactions.It solves the problems such as side reactions and concentration polarization of anions existing in the liquid electrolytes of traditional lithium-ion batteries,and thus improves the coulombic efficiency and cycle life of the batteries.Researchers have developed several types of single ion conductor electrolytes.In this paper,the latest advances in the synthesis strategies and molecular dynamics simulation of polymer electrolytes for single ion conductors with different anion types in the past five years are summarized.