NON-AQUEOUS ELECTROLYTE SOLUTION, ELECTROCHEMICAL DEVICE PRECURSOR, ELECTROCHEMICAL DEVICE, AND METHOD OF PRODUCING ELECTROCHEMICAL DEVICE

A non-aqueous electrolyte solution contains a chain sulfone compound (I) represented by Formula (I) and a cyclic sulfone compound (II) represented by Formula (II). The content of the chain sulfone compound (I) is from 0.01% by mass to 10% by mass with respect to the total amount of the non-aqueous electrolyte solution. In Formula (I), each of Rand Rindependently represents an alkyl group, or a fluorinated alkyl group. In Formula (II), Rrepresents an alkylene group, an alkenylene group, or a group represented by Formula (ii-); and * represents a binding site; in which in Formula (ii-), Rrepresents a hydrogen atom, an alkyl group, or a group represented by Formula (ii-); and Rrepresents an alkyl group, or a group represented by Formula (ii-).