| 摘要 |
PROBLEM TO BE SOLVED: To stand the use in the high temperature, reduce the weight, and pursue the safety by including a lithium methide salt and a salt including fluorine except for the lithium methide salt in the electrolyte and, setting a weight ratio of the lithium methide salt to the total weight of the salt included in the electrolyte in which the lithium methide salt is dissolved to a specified value or more. SOLUTION: The electrolyte is adjusted by adding LiC(SO2CF2CF3)3 as lithium methide salt at 5 wt.% or more in relation to the total weight of the salt included in the electrolyte. A plate 7 is formed by laminating a positive electrode mix layer 1, a positive electrode collector layer 2, an electrical insulating film 3, a negative electrode collector layer 4, a negative electrode mix layer 5 and a separator layer 6 in this order like a tape, and spirally winding it. After impregnating this power generating element for a battery with the adjusted electrolyte, the power generating element for the battery is housed in a battery case of an aluminum laminate sheet so as to manufacture a non-aqueous electrolyte secondary battery. With this structure, increase of the internal resistance and lowering of the discharging capacity after it is left as it is can be reduced, and safety is improved, and use in the high temperature is enabled. |
