| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte for a battery capable of giving excellent high-temperature storage characteristics and high safety to the battery. Ž<P>SOLUTION: The nonaqueous electrolyte for a battery includes a ring phosphazen compound expressed by formula (I) of (NPR<SP>1</SP><SB>2</SB>)<SB>n</SB>, a nonaqueous solvent, an unsaturated ester compound expressed by formula (II), and supporting salt. Here, R<SP>1</SP>in formula (I) each independently shows fluorine, alkoxy, or aryloxy which; and n shows 3-4. R<SP>2</SP>in formula (II) is 1-2C alkyl; and R<SP>3</SP>is 2-4C alkenyl or propargyl. However, R<SP>2</SP>and R<SP>3</SP>may form a ring by combining each other. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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