Electrolyte for electrochemical device

Claim 1

An electrolyte for an electrochemical device, said electrolyte comprising: a first compound that is an ionic metal complex represented by the general formula (1); and at least one compound selected from the group consisting of compounds corresponding to any one of the formulas wherein A a+ represents a metal ion, onium ion or hydrogen ion; 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; 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; n represents a number from 0 to 8; q is 0 or 1; X 1 represents 0, NR 5 or NR 5 R 6; R 1 and R 2 each independently represent H, a halogen, a C 1 -C 10 alkyl group or C 1 -C 10 halogenated alkyl group; R 3 represents a C 1 -C 10 halogenated alkylene group, C 4 -C 20 arylene group or C 4 -C 20 halogenated arylene group, wherein the alkylene and arylene groups of R 3 optionally may carry substituents or include hetero atoms, and one group R 3 optionally may be bonded with another group R 3 ; R 4 represents a halogen, C 1 -C 10 alkyl group, C 1 -C 10 halogenated alkyl group, C 4 -C 20 aryl group, C 4 -C 20 halogenated aryl group of X 2 R 7 , wherein the alkyl and aryl groups of R 4 optionally may carry substituents or hetero atoms, and one group R 4 optionally may be bonded with another group R 4 ; X 2 represents O, S, NR 5 or NR 5 R 6 ; R 5 and R 6 each independently represent H or a C 1 -C 10 alkyl group; R 7 represents a C 1 -C 10 alkyl group, C 1 -C 10 alkyl group, C 1 -C 10 alkyl group, C 1 -C 10 halogenated alkyl group, C 4 -C 20 aryl group, or C 4 -C 20 halogenated aryl group; x, y and z each independently represent a number from 1 to 8; Y 1 , Y 2 and Y 3 each independently represent an SO 2 group or CO group; and R 8 , R 9 and R 10 each independently represent an electron-attracting organic substituent optionally carrying a substituent or including a hetero atom, wherein two or more of R 8 , R 9 and R 10 optionally may be bonded together to form a ring, and wherein one or more of R 8 , R 9 and R 10 optionally may be bonded with an adjacent molecule to form a polymer.