| 主权项 |
1. An addition composition for an electrolytic solution comprising:
(a) a silyl group-containing compound (A), wherein at least one hydrogen atom of an acid selected from the group consisting of a protonic acid having phosphorus atom and/or boron atom, a sulfonic acid, and a carboxylic acid is substituted with a silyl group represented by following general formula (A1):[wherein, Ra1, Ra2, and Ra3 each independently represent a hydrocarbon group having 1 to 20 carbon atoms, which may be substituted]; and
(b) at least one basic compound (B) selected from the group consisting of a Lewis base and a compound represented by general formula Q+Y− [wherein, Q+ represents a quaternary ammonium group, a quaternary phosphonium group, an alkali metal, or an alkaline earth metal, and Y− represents an alkoxy group, or an aryloxy group.], and/or at least one silicon compound (C) represented by following general formula (C):[wherein, Rc1, Rc2, and Rc3 each independently represent a hydrocarbon group having 1 to 20 carbon atoms, which may be substituted, or an alkoxy group having 1 to 20 carbon atoms, which may be substituted, and X1 is a group represented by general formula OR1 (wherein, R1 represents a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms, which may be substituted, a silyl group having 1 to 20 carbon atoms, SO2CH3, or SO2CF3.), or a halogen atom.]; and
wherein the addition composition contains 1 ppm by mass or more and 100% by mass or less of the basic compound (B) and/or the silicon compound (C), relative to 100% by mass of the silyl group-containing compound (A). |
