Electrolyte solution for non-aqueous electrolyte battery, and non-aqueous electrolyte battery using the same

An electrolyte solution for a non-aqueous electrolyte battery, comprising at least a non-aqueous solvent, a solute, at least one silane compound selected from the group consisting of the following Compound Nos. 1 to 13 as a first compound, and at least one compound selected from the group consisting of fluorine-containing compounds represented by the following formulae (2) to (9) as a second compound, wherein the concentration of said solute is in the range between 0.5 mol/L and 2.5 mol/L:

• wherein,
• in formulae (4) and (6) to (8),
• R3 to R6 each independently represents a fluorine atom or an organic group selected from the group consisting of a linear or branched C1-10 alkoxy group, a C2-10 alkenyloxy group, a C2-10 alkynyloxy group, a C3-10 cycloalkoxy group, a C3-10 cycloalkenyloxy group and a C6-10 aryloxy group, wherein a fluorine atom, an oxygen atom, or an unsaturated bond may optionally be present in the organic group;
• in formulae (4), (5), (8), and (9),
• X1 and X2 each independently represents a fluorine atom or an organic group selected from the group consisting of a linear or branched C1-10 alkyl group, a C2-10 alkenyl group, a C2-10 alkynyl group, a C3-10 cycloalkyl group, a C3-10 cycloalkenyl group, a C6-10 aryl group, a linear or branched C1-10 alkoxy group, a C2-10 alkenyloxy group, a C2-10 alkynyloxy group, a C3-10 cycloalkoxy group, a C3-10 cycloalkenyloxy group and a C6-10 aryloxy group, wherein a fluorine atom, an oxygen atom, or an unsaturated bond may optionally be present in the organic group as well;
• wherein formulae (4) to (9) have at least one P—F bond and/or at least one S—F bond;
• wherein M1 and M2 each independently represents a proton, a metal cation or an onium cation;
• wherein the anion of said fluorine-containing compound represented by the formula (2) is:
• and
• wherein the anion of said fluorine-containing compound represented by the formula (3) is selected from the group consisting of the following Compound Nos. 15 to 24: