申请人:SOLVAY SA
公开号:US20190245243A1
公开(公告)日:2019-08-08
Disclosed herein are electrolyte compositions comprising a fluorinated solvent, at least one silyl oxalate represented by the formulas RR′Si(C
2
O
4
), wherein R and R′ are each the same or different from each other and independently selected from C
1
-C
8
alkyl, C
2
-C
8
alkenyl, C
2
-C
8
alkynyl, or C
6
-C
10
aryl radical, optionally comprising at least one substituent selected from halogen, hydroxyl, alkoxy, carbonyl, and carboxyl groups; and LiPF6. Also disclosed herein are electrolyte compositions comprising a fluorinated solvent and a lithium oxalato phosphate salt represented by the formula LiPF
(6-2q)
(C
2
O
4
)
q
, wherein q is 1, 2 or 3; wherein the oxalato phosphate salt comprises at least a portion that is derived from at least one silyl oxalate as defined herein. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.
本文披露了包括氟化溶剂、至少一种由RR′Si(C2O4)表示的硅酰草酸酯组成的电解质组合物,其中R和R′各自相同或不同且独立选择自C1-C8烷基、C2-C8烯基、C2-C8炔基或C6-C10芳基,可选地包括至少一种来自卤素、羟基、烷氧基、羰基和羧基的取代基;和LiPF6。本文还披露了包括氟化溶剂和由LiPF(6-2q)(C2O4)q表示的锂草酸盐磷酸盐组成的电解质组合物,其中q为1、2或3;其中草酸盐磷酸盐包括至少一部分源自本文定义的至少一种硅酰草酸酯。这些电解质组合物在锂离子电池等电化学电池中有用。