| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous solvent system secondary battery, having a large initial discharge capacity and improving high-load discharging efficiency and high-temperature charge preservation characteristics. <P>SOLUTION: The battery has a positive electrode containing a positive active substance capable of reversibly storing and releasing lithium, a negative electrode containing a negative active substance capable of reversibly storing and releasing lithium and nonaqueous solvent system electrolytic solution. The solution contains (1) a ring-like acid anhydride represented by chemical Formula (1) (where n is an integer of 0 to 4, R<SB>1</SB>to R<SB>4</SB>may be equal or different and indicate H or a 1-12C organic group composed of an alkyl group, an alkenyl group or an aryl group, and R<SB>1</SB>to R<SB>4</SB>may be combined with one another to form a ring), and (2) at least one kind selected from among an N-alkylsuccinimide compound, an N-alkenylsuccinimide compound and an-N arylsuccinimide compound. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
