LITHIUM ION BATTERY ELECTROLYTE WITH IMPROVED WETTABILITY AND LITHIUM ION BATTERY
卷宗概要
发明人
Min FU; Lanlan SHI; Min SU
IPC 分类
CPC 分类
A lithium ion battery electrolyte with improved wettability and a lithium ion battery is disclosed. The electrolyte includes 10% to 17% of lithium salt, 1.8% to 3.7% of film-forming additive, 0.5% to 10% of wetting additive with the balance being solvent. The wetting additive is fluorobenzene and a silanyl fluorobenzene compound, with a mass fraction of fluorobenzene in the electrolyte being at least 3% and a mass fraction of the silanyl fluorobenzene compound being not less than 1%. Two types of silanyl fluorobenzene compounds provided are mainly composed of silanyl groups which absorb HF and reduce surface tension and fluorophenyl groups which reduce surface tension. By using the silanyl fluorobenzene compounds together with fluorobenzene, a problem of performance deviation caused by generation of HF by fluorobenzene at high temperature can be solved, and wettability of the electrolyte can also be provided.
原文（中文）
A lithium ion battery electrolyte with improved wettability and a lithium ion battery is disclosed. The electrolyte includes 10% to 17% of lithium salt, 1.8% to 3.7% of film-forming additive, 0.5% to 10% of wetting additive with the balance being solvent. The wetting additive is fluorobenzene and a silanyl fluorobenzene compound, with a mass fraction of fluorobenzene in the electrolyte being at least 3% and a mass fraction of the silanyl fluorobenzene compound being not less than 1%. Two types of silanyl fluorobenzene compounds provided are mainly composed of silanyl groups which absorb HF and reduce surface tension and fluorophenyl groups which reduce surface tension. By using the silanyl fluorobenzene compounds together with fluorobenzene, a problem of performance deviation caused by generation of HF by fluorobenzene at high temperature can be solved, and wettability of the electrolyte can also be provided.