Nonaqueous Electrolytic Solution and Nonaqueous Electrolytic Solution Secondary Battery
申请人:Central Glass Company, Limited
公开号:US20190312307A1
公开(公告)日:2019-10-10
An object of the present invention is to provide a nonaqueous electrolytic solution and a nonaqueous electrolytic solution secondary battery capable of showing high output characteristics at a low temperature even after the battery is used to some extent, and capable of showing good high-rate properties, and further capable of improving safety of batteries. The nonaqueous electrolytic solution includes a nonaqueous solvent, an electrolyte dissolved in the nonaqueous solvent, (I) a difluoro ionic complex (1) represented by the general formula (1), and (II) at least one compound selected from the group consisting of a specific cyclic phosphazene compound, siloxane compound, aromatic compound, cyclohexene compound, phosphoric acid ester compound, fluorinated linear ether compound, fluorinated cyclic ether compound, and boric acid ester compound, and 95 mol % or more of the difluoro ionic complex (1) is a difluoro ionic complex (1-Cis) in a cis configuration represented by the general formula (1-Cis).
本发明的目的是提供一种非水电解质溶液和一种非水电解质溶液二次电池,即使在电池被部分使用后也能在低温下显示高输出特性,并能展现良好的高速率特性,进一步提高电池的安全性。非水电解质溶液包括非水溶剂、溶解在非水溶剂中的电解质,(I)由一般式(1)表示的二氟离子络合物(1),以及(II)选自特定环磷腈化合物、硅氧烷化合物、芳香化合物、环己烯化合物、磷酸酯化合物、氟化线性醚化合物、氟化环状醚化合物和硼酸酯化合物组成的至少一种化合物,其中95摩尔%或更多的二氟离子络合物(1)是由一般式(1-Cis)表示的顺式构型的二氟离子络合物(1-Cis)。