Nonaqueous electrolyte secondary battery

A nonaqueous electrolyte secondary battery comprising the following elements:

• a positive plate;
• a negative plate;
• a separator interposed between said positive plate and said negative plate;
• and
• a nonaqueous electrolyte containing at least a sultone compound having unsaturated bonds represented by chemical formula (1), and furthermore, a vinylene carbonate derivative represented by chemical formula (2) in 1 wt % or below, and a cyclic sulfate represented by chemical formula (3) in 2 wt % or below:
• 6
• The formula represents a compound in which R1 to R4 are independently hydrogen, or the same or different types of alkyl groups, alkoxy groups, halogens, haloalkyl groups, or aryl groups.
• where R1 to R4 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, halogen, haloalkyl, and aryl;
• 7
• The formula represents a compound in which R5 to R6 are independently hydrogen, or the same or different types of alkyl groups, alkoxy groups, halogens, haloalkyl groups, or aryl groups.
• where R5 and R6 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, halogen, haloalkyl, and aryl 1;
• and
• 8
• (Here, n is 0 or 1.)
• The formula represents a compound in which R7 to R12 are independently hydrogen, or the same or different types of alkyl groups, alkoxy groups, halogens, haloalkyl groups, or aryl groups.
• where R7 to R12 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, halogen, haloalkyl, and aryl.

A nonaqueous electrolyte secondary battery comprising the following elements:

• a positive plate;
• a negative plate;
• a separator interposed between said positive plate and said negative plate;
• and
• a nonaqueous electrolyte containing at least a sultone compound having unsaturated bonds represented by chemical formula (1), and a vinylene carbonate derivative represented by chemical formula (2) in 0.1 wt % or above and 1 wt % or below:
• 9
• The formula represents a compound in which R1 to R4 are independently hydrogen, or the same or different types of alkyl groups, alkoxy groups, halogens, haloalkyl groups, or aryl groups. where R1 to R4 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, halogen, haloalkyl, and aryl;
• and
• 10
• The formula represents a compound in which R5 to R6 are independently hydrogen, or the same or different types of alkyl groups, alkoxy groups, halogens, haloalkyl groups, or aryl groups.
• where R5 and R6 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, halogen, haloalkyl, and aryl.

A nonaqueous electrolyte secondary battery comprising the following elements:

• a positive plate;
• a negative plate;
• a separator interposed between said positive plate and said negative plate;
• and
• a nonaqueous electrolyte containing at least a sultone compound having unsaturated bonds represented by chemical formula (1), and a cyclic sulfate represented by chemical formula (3) in 0.1 wt % or above and 2 wt % or below:
• 11
• The formula represents a compound in which R1 to R4 are independently hydrogen, or the same or different types of alkyl groups, alkoxy groups, halogens, haloalkyl groups, or aryl groups.
• where R1 to R4 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, halogen, haloalkyl, and aryl;
• and
• 12
• (Here, n is 0 or 1.)
• The formula represents a compound in which R7 to R12 are independently hydrogen, or the same or different types of alkyl groups, alkoxy groups, halogens, haloalkyl groups, or aryl groups. where R7 to R12 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, halogen, haloalkyl, and aryl.