| abstract |
Provided are a novel non-aqueous electrolyte, a method for preparing the same, and a non-aqueous electrolyte cell using the same. The non-aqueous electrolyte uses a derivative of methylene bis(sulfonate), and provides a reduced initial irreversible capacity of cell, and improves circulation properties, an electrical capacity and preservation properties. To obtain the above effects, the following three inventions are provided: (1) a non-aqueous electrolyte including (i) at least one non-aqueous solvent selected from the group consisting of cyclic carbonate, carbonate chain and cyclic carboxylate, (ii) lithium salt dissolvable in the non-aqueous solvent as an electrolyte salt, and (iii) a derivative of methylene bis(sulfonate) represented by general formula [I]: (2) a method for preparing a non-aqueous electrolyte by dissolving the lithium salt and then the derivative of methylene bis(sulfonate), in the non-aqueous solvent; and (3) a non-aqueous electrolyte cell including (i) the non-aqueous electrolyte of (1), (ii) an cathode, (iii) and anode, and (iv) a sepurator. |