| 摘要 |
PURPOSE:To improve controllability and safety of a cell without inviting its lowered discharge performance by using LiFC3SO3 in place of LiClO4 for solute to be used in an electrolyte. CONSTITUTION:In a nonaquenous electrolyte cell composed by combining a positive electrode 3 with a negative electrode 5 having a light metal such as lithium and sodium as an active material through a separator 4, is used a nonaqueous electrolyte, wherein LiCF3SO3 is dissolved as solute in an electrolyte solvent in which propylene carbonate is mixed with an organic solvent made of at least one kind to be selected among from dimethoxyethane, tetrahydrofuran, dimethyldioxolrane, tetramethyldioxolane, dimethyldioxane and dioxane. LiCF3SO3 is stable in the organic solvent, and subjected to extremely little deterioration at the time of a high temperature preservation and the electrolyte obtains about the same degree of conductivity with the electrolyte using LICElO4. Thereby, without inviting lowered cell discharge performance, safety of the nonaqueous electrolyte is raised so as to improve controllability and safety. |
