Patent ID: 6787267
Filing Date: 2004-09-07
Classification: H01G,H01M,Y02E

Abstract:
An electrolyte for an electrochemical device, said electrolyte comprising:a first compound that is an ionic metal complex represented by formula (1); and at least one compound selected from the group consisting of compounds represented by formulas (2) to (7) or selected from the group consisting of compounds represented by the formulas Aa+(PF6âˆ’)a,Aa+(ClO4âˆ’)a,Aa+(BF4âˆ’)a, Aa+(AsF6âˆ’)a, and Aa+(SbF6âˆ’)a, â€ƒwherein M is a transition metal selected from the group consisting of elements of groups 3-11 of the periodic table; or an element selected from the group consisting of elements of groups 12-15 of the periodic table; An+ represents a metal ion, hydrogen ion or onium ion; a represents a number from 1 to 3; b represents a number from 1 to 3; p is b/a; m represents a number from 1 to 4; q is 0 or 1; R1 represents a C1-C10 alkylene group, C1-C10 halogenated alkylene group, C4-C20 arylene group or C4-C20 halogenated arylene group, these alkylene and arylene groups of said R1 optionally having substituents and hetero atoms, one of said R1 being optionally bonded with another of said R1; each of X1 and 2 independently represents O,S or NR2; R2 represents a hydrogen, C1-C10 alkyl group, C1-C10 halogenated alkyl group, C4-C20 aryl group or C4-C20 halogenated aryl group, these alkyl and aryl groups of said R2 optionally having substituents and hetero atoms, at least two of said R2 being optionally bonded together to form a ring; each of x, y and z independently represents a number from 1 to 8; each of Y1, Y2 and Y3 independently represents a SO2 group or CO group; and each of R3, R4 and R5 independently represents an electron-attractive organic substituent optionally having a substituent or a hetero atom, at least two of said R3, R4 and R5 being optionally bonded together to form a ring, at least one of said R3, R4 and R5 being optionally bonded with an adjacent molecule to form a polymer, and wherein when q=0.X1 is oxygen, X2 is oxygen, m=2. M is boron, and Aa+ is Li+ in said first compound, the at least one compound is selected from the group consisting of compounds represented by formulas (5), (6), (7), and Aa+(SbF6âˆ’)a,