| 摘要 |
The present invention provides a nonaqueous electrolyte solution which contains a phosphonosulfonic acid compound represented by general formula (I). (In general formula (I), each of R1, R2 and R3 independently represents a hydrogen atom, an alkyl group having 1-6 carbon atoms, a haloalkyl group having 1-6 carbon atoms, a phenyl group, a benzyl group, or a group represented by general formula (II); each of R4 and R5 independently represents a hydrogen atom, a halogen atom or an alkyl group having 1-6 carbon atoms; and n represents an integer of 1-6. In general formula (II), each of R6, R7 and R8 independently represents an alkyl group having 1-6 carbon atoms, a phenyl group or a benzyl group; m represents an integer of 0-2; and * represents a bonding position to an oxygen atom in general formula (I).) |
