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US 9,287,583 B2Granted
Additive having cyano group for non-aqueous electrolyte and electrochemical device using the same
AssigneeLG Chem, Ltd.
InventorsJeong Ju Cho, Ho Chun Lee, Yong Su Choi, Jong Ho Jeon
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Abstract
Disclosed is an additive for a non-aqueous electrolyte, which is a compound having a double bond and at least two cyano groups, the two cyano groups being in a trans-formation to the double bond. Also, a non-aqueous electrolyte comprising the additive and an electrochemical device comprising the non-aqueous electrolyte are also disclosed. Further, an electrode comprising the cyano group-containing compound and an electrochemical device comprising the electrode are disclosed.
Claims3
A non-aqueous electrolyte comprising:
- an electrolyte salt;
- an organic solvent;
- and
- an additive for a non-aqueous electrolyte,
- wherein the additive for a non-aqueous electrolyte is a compound represented by the following Formula 1 and having a double bond and at least two cyano groups, wherein the two of the at least two cyano groups are in a trans-formation to the double bond,
- wherein the electrolyte salt is formed of a combination of (i) a cation selected from the group consisting of Li+, Na+ and K+;
- and (ii) an anion selected from the group consisting of PF6−, BF4−, Cl−, Br−, I−, ClO4−, AsF6−;
- CH3CO2−, CF3SO3−, N(CF3SO2)2− and C(CF2SO2)3−,
- wherein the organic solvent is at least one solvent selected from the group consisting of cyclic carbonates, linear carbonates, lactones, ethers, esters, sulfoxides, acetonitriles, lactams, ketones and halogen derivatives thereof:
- wherein the compound represented by the Formula 1 is 1,1,4,4-tetracyanobutene.
7 more elements
Dependencies are inferred from the claim text.