锂离子电池LiBF4基液体电解质研究进展

LiBF4基电解质的热稳定性较好,对环境水分不太敏感,有希望发展成为被民用、军事、三航领域微型、储能及动力锂离子电池广泛采用的优秀电解质体系。本文综述了近期在改善LiBF4的电导率、拓宽应用温度范围、促进SEI膜的形成、提高其电解液电导率及与电极材料的相容性等方面所取得的进展,并对其未来发展方向作了展望。

Progress in LiBF4-based Liquid Electrolytes for Li-ion Batteries

To avoid the drawbacks of LiPF-6-based electrolytes such as its moisture sensitivity,thermal instability,narrow operating temperature range and easiness to release PF-5,much attention has been paid to developing new type electrolytes.Attempts to develop LiBF-4-based electrolytes are among one of them.Electrolytes based on LiBF-4 are thermally more stable and insensitive to moisture,which would probably make it to become a promising electrolyte system for civilian,military,navigation,aviation and aeronautic use in miniature,energy storage and vehicle Li-ion batteries.Progress in studies of LiBF-4-based electrolytes recently such as attempts to improve its conductivity,to extend its temperature operation,to help form stable SEI film and its compatibility with electrodes are reviewed.Future prospect of LiBF-4-based electrolytes is also discussed.