低阻抗电解液添加剂二氟磷酸锂的研究进展

Research progress of lithium difluorophosphate as low impedance electrolyte additive

在锂离子电池电解液添加剂中,二氟磷酸锂(LiDFP)可改善电池多方面的性能,尤其是其出色的低阻抗效果受到高度关注。综述了LiDFP在调节固体电解质界面膜(SEI)阻抗,改善电池低温性能、倍率性能和高温稳定性等方面的研究进展,介绍了LiDFP在实际应用中存在的问题和解决方案。阐述了LiDFP的作用机理,并对低阻抗电解液添加剂的开发进行了展望。

The potential of lithium difluorophosphate as an electrolyte additive for enhancing the performance of lithium-ion batteries has been extensively investigated.Specifically,its superior low impedance effect has garnered significant interest.The latest research on the use of lithium difluorophosphate in regulating the impedance of solid electrolyte interphase(SEI)and improving the stability of batteries at low temperature,high rate,and high temperature was reviewed.Furthermore,the challenges and possible solutions associated with the practical application of lithium difluorophosphate were introduced.The effect mechanisms of lithium difluorophosphate was elaborated and the development of low-impedance electrolyte additives was prospected.