JP2006139951A5 - - Google Patents

Claims (7)

Charging absorb lithium ions by discharge, e Bei a negative electrode and a positive electrode capable of releasing a non-aqueous electrolyte, at least one negative electrode active material is Si, Sn, selected from Pb and the group consisting of substances containing these elements a nonaqueous electrolyte used in the nonaqueous electrolyte secondary battery Ru der, nonaqueous electrolyte characterized by containing the linear carbonate represented by the following following general formula (1) and the saturated cyclic carbonate Electrolyte for liquid secondary battery.

(However, n is an integer satisfying n ≧ 3 and m ≧ 1, and n + m ≧ 5.
Part or all of hydrogen may be substituted with fluorine. ) And have you to claim 1, n and m in Formula (1) is a non-aqueous electrolyte secondary battery electrolyte, which is a n ≠ m. The non-aqueous system according to claim 1 or 2, wherein a blending amount of the chain carbonate represented by the general formula (1) is 50% by volume or more and 95% by volume or less with respect to the non-aqueous electrolyte solution. Electrolyte for electrolyte secondary battery. The electrolyte solution for a non-aqueous electrolyte secondary battery according to any one of claims 1 to 3 , wherein the saturated cyclic carbonate is ethylene carbonate and / or propylene carbonate. 5. The non-aqueous electrolyte solution according to claim 1, wherein a blending amount of the saturated cyclic carbonate is 5% by volume or more and 50% by volume or less with respect to the non-aqueous electrolyte solution. Secondary battery electrolyte. And have you to any one of claims 1 to 5, non of the nonaqueous electrolyte solution, and also dimethyl carbonate, characterized in that it contains at least one selected from the group consisting of ethyl methyl carbonate, and diethyl carbonate Electrolytic solution for aqueous electrolyte secondary battery. In a non-aqueous electrolyte secondary battery including a negative electrode and a positive electrode that can occlude and release lithium ions by charging and discharging, and a non-aqueous electrolyte, the negative electrode active material is made of Si, Sn, Pb, and a material containing these elements A non-aqueous electrolyte solution, which is at least one selected from the group, and the non-aqueous electrolyte solution is an electrolyte solution for a non-aqueous electrolyte secondary battery according to any one of claims 1 to 6. Secondary battery.