Organic Phosphonium Salts, a Method for their Preparation, and their Use in Electrochemical Systems
申请人:Cytec Canada Inc.
公开号:EP2952518A1
公开(公告)日:2015-12-09
The invention relates to a phosphonium salt of formula I: R1 R2 R3 R4 P+ A-, where the anions A- are selected from the group consisting of bis(fluorosulfonyl)imide and bis(trifluoromethylsulfonyl)imide, tetrafluoroborate, hexafluorophosphate, hexafluoroarsenate, hexafluoroantimonate, perchlorate, trifluoromethanesulfonate, toluenesulfonate, methanesulfonate, iodide, tricyanomethanide, trifluoromethyltrifluoroborate, heptafluoropropanesulfonate, sulfate, trifluoroacetate, heptafluorobutyrate, cyanocyanamide, dialkylphosphates, and phosphonate anions where the substituents R1 and R2 are methyl groups, R3 is selected from the group consisting of C1- to C8-alkyl groups, and R4 is selected from the group consisting of C1- to C8-alkyl groups, which alkyl groups may be linear, branched or cyclic, wherein R3 and R4 are preferably different from each other, or may form a ring together with the phosphorus atom, to mixtures comprising at least of these salts, to electrolytes prepared therefrom, and to applications thereof in electrochemical devices, particularly batteries and electrochemical capacitors.
该发明涉及一种式I的膦盐:R1 R2 R3 R4 P+ A-,其中阴离子A-从双(氟磺酰)亚胺、双(三氟甲基磺酰)亚胺、四氟硼酸盐、六氟磷酸盐、六氟砷酸盐、六氟锑酸盐、高氯酸盐、三氟甲磺酸盐、甲苯磺酸盐、甲磺酸盐、碘化物、三氰甲烷基离子、三氟甲基三氟硼酸盐、七氟丙烷磺酸盐、硫酸盐、三氟乙酸盐、七氟丁酸盐、氰氰胺、二烷基磷酸盐和膦酸盐阴离子中选择,其中取代基R1和R2为甲基基团,R3从C1到C8烷基基团中选择,R4从C1到C8烷基基团中选择,这些烷基基团可以是直链、支链或环状的,其中R3和R4最好彼此不同,或者与磷原子一起形成环,至少包含这些盐的混合物,由此制备的电解质,以及在电化学设备中的应用,特别是在电池和电化学电容器中的应用。