| 摘要 |
PURPOSE:To perform the deterioration of discharge capacity, generation of gas, and increase in internal resistance through impurities and obtain an electrolyte for an organic electrolytic battery by using the adduct consisting of lithium salt of phosphorus, antimony, arsenic, or boron and a specific amine compound as the solute. CONSTITUTION:The adduct consisting of a compound represented by a general expression ( I ) and an amine compound represented by a general expression (II) is formed in ethylene glycol ether, and the dissolution of a compound represented by the general expression ( I ) into ethylene glycol ether and such is performed under the heating conditions at 50 to 80 deg.C. When an amine compound represented by the general expression (II) is added to the heated solution by three times mol or more, the adduct consisting of the compound represented by the general expression ( I ) and the amine compound represented by the general expression (II) is deposited without being cooled. A concrete example of the compound represented by the general expression ( I ) is LiPF6, LiSbF6, LiAsF6, and LiBF4. In addition, for example, N,N,N',N'-tetramethylethylendiamine, N,N,N',N'-tetramethylebutanediamine, and such are recommended as the amine compound represented by the general expression (II). Besides, for example, propylenecarbonate, gamma-butyrolactone, tetrahydrofuran, 1,2-dimethoxyethane, 1,3-dioxolan, and such are used as the electrolytic solvent. |
