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US 2014/0212747 A1Published application
Nonaqueous electrolyte secondary battery and method for producing nonaqueous electrolyte secondary battery
AssigneeGS Yuasa International Ltd.
InventorsKatsushi Nishie, Yudai Kawasoe
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Abstract
A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode includes LixMnaNibCOcMdO2 (0<x<1.3, 0.1<a<0.7, 0.1<b<0.6, 0.1<c<0.67, 0≦d<0.1, a+b+c+d=1, and M represents a metal selected from the group consisting of Al, Ti, Mq, Cr, Zn, W, Zr and Nb) as a positive active material. The nonaqueous electrolyte includes a cyclic disulfone compound of the general formula (1) in an amount of 0.1 to 4.0% by mass based on the total mass of the nonaqueous electrolyte.
Claims4
A nonaqueous electrolyte secondary battery comprising:
- a positive electrode;
- a negative electrode;
- and
- a nonaqueous electrolyte,
- wherein the positive electrode includes LixMnaNibCOcMdO2 (0<x<1.3, 0.1<a<0.7, 0.1<b<0.6, 0.1<c<0.67, 0≦d=0.1, a+b+c+d=1, and M represents a metal selected from a group consisting of Al, Ti, Mg, Cr, Zn, W, Zr and Nb) as a positive active material, and
- the nonaqueous electrolyte includes a cyclic disulfone compound of a following general formula (1) in an amount of 0.1 to 4.0% by mass based on a total mass of the nonaqueous electrolyte:
- wherein R1 and R2 each represent hydrogen, or an alkyl group having 2 to 4 carbon atoms, optionally including a halogen element.
4 more elements
Dependencies are inferred from the claim text.