| 摘要 |
PURPOSE:To provide a non-aqueous solvent for electrolytic solution which is hard to be reduced and satisfies perfectly other physical and chemical characteristics by mixing a 1,3-dioxane-2-on derivative given by a specific structural expression with other non-aqueous solvent. CONSTITUTION:A 1,3-dioxane-2-on derivative given by the expression in attached illustration is mixed with a non-aqueous solvent such as ester, ether, etc. In expression, R1, R6 are alkyl radical given by general expression CnH2n+1 (n=1-4) or alkoxyl radical given by general expression OCnH2n+1 (n=1-4), and R2-R5 are H or alkyl radical given by general expression CnH2n+1 (n=1-4) or alkoxyl radical given by general expression OCnH2n+1 (n=1-4) O<1>-C<6>, O<3>-C<4> of this compound are hard to be cleaved, i.e., not likely to be reduced. Further, it has a high specific dielectric factor and is not likely reduced by other non-aqueous electrolyte PC, BC, to provide a favorable non-aqueous solvent for electrolyte to be used in a battery. As positive electrode active material is used a metal oxide or sulfide, while metal Li, Li alloy, or a carbonaceous material capable of occluding and releasing Li ions is used to the negative electrode. |
