Abstract:
The present invention aims to provide an electrolytic solution which restrains gas generation and has excellent battery characteristics. The electrolytic solution includes a nonaqueous solvent (I), an electrolyte salt (II), and 0.001 to 20% by mass of a compound represented by the formula (1) or the formula (A), R1—ORf1—(ORf2)l—(ORf3)m—CN (1) wherein R1 represents CH3—Rf—, CH2F—Rf—, or CHF2—Rf—, and Rf in R1 represents an alkylene group which may optionally have a fluorine atom,Rf1, Rf2, and Rf3 may be the same as or different from each other, and individually represent a C1-C3 fluorinated alkylene group, andl and m may be the same as or different from each other, and individually represent an integer of 0 to 5, RA1-ORfA1—(ORfA2)l—(ORfA3)m—CN (A) wherein RA1 represents a C2-C9 group having an unsaturated bond,RfA1, RfA2, and RfA3 may be the same as or different from each other, and individually represent a C1-C3 alkylene group which may optionally have a fluorine atom, andl and m may be the same as or different from each other, and individually represent an integer of 0 to 5.