| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrolyte excelling in ion conductivity and electrochemical stability, in relation to a nonaqueous electrolytic solution used for primary and secondary lithium batteries, a dye-sensitized solar cell, an electric double-layer capacitor or the like. <P>SOLUTION: In this nonaqueous electrolytic solution containing a salt having anions represented by formula (1): Rf<SB>1</SB>SO<SB>2</SB>N<SP>-</SP>SO<SB>2</SB>Rf<SB>2</SB>(Rf<SB>1</SB>and Rf<SB>2</SB>are each a 1-12C perfluoroalkyl group) (for instance, (CF<SB>3</SB>SO<SB>2</SB>)<SB>2</SB>N<SP>-</SP>), the content of anions represented by formula (2): R<SB>1</SB>SO<SB>2</SB>N<SP>-</SP>SO<SB>2</SB>R<SB>2</SB>(R<SB>1</SB>and R<SB>2</SB>are each independently a 1-12C fluoroalkyl group, and either or both of R<SB>1</SB>and R<SB>2</SB>is/are each a fluoroalkyl group containing at least one hydrogen atom) (for instance, CF<SB>2</SB>HSO<SB>2</SB>N<SP>-</SP>SO<SB>2</SB>CF<SB>3</SB>) is not more than 50 ppm with respect to the anions represented by formula (1). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
