Nonaqueous electrolyte and nonaqueous electrolyte secondary...

Details Nonaqueous electrolyte and nonaqueous electrolyte secondary... Nonaqueous electrolyte and nonaqueous electrolyte secondary...

2006-02-14

2006-02-14

Weiner, Laura (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

C429S231800, C429S300000, C429S163000

Reexamination Certificate

active

06998194

ABSTRACT:
The present invention provide a nonaqueous electrolyte comprising a nonaqueous solvent, wherein the nonaqueous solvent includes ethylene carbonate (EC), propylene carbonate (PC), γ-butyrolactone (GBL) and a fourth component that is a solvent other than the EC, the PC and the GBL, and the nonaqueous solvent satisfies the following equations (1) to (4):15 ≦ x ≦ 50(1)30 ≦ y ≦ 75(2) 0 < z < 30(3) 0 < p ≦ 5(4)where, the x is a ratio (volume %) of ethylene carbonate to a total volume of the nonaqueous solvent, the y is a ratio (volume %) of propylene carbonate to the total volume of the nonaqueous solvent, the z is a ratio (volume %) of γ-butyrolactone to the total volume of the nonaqueous solvent, and the p is a ratio (volume %) of the fourth component to the total volume of the nonaqueous solvent.

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