Gel electrolyte and gel electrolytic cell

Application Number: 00108303
Application Date: 2000.02.18
Publication Number: 1267926
Publication Date: 2000.09.27
Priority Information: 1999/2/19 JP 041456/1999
International: H01M6/14;H01M10/40
Applicant(s) Name: Sony Co., Ltd.
Inventor(s) Name: Wataridani Shinshio;Goto Shushi
Patent Agency Code: 11038
Patent Agent: duan chengen
Abstract A gel electrolyte comprised of a non-aqueous electrolytic solution immersed in a matrix polymer, in which ion conductivity of a solvent is improved and superior cyclic characteristics are achieved. To this end, the gel electrolyte includes an electrolyte, a matrix polymer and a non-aqueous solvent. The non-aqueous solvent is a mixed solvent of ethylene carbonate (EC), propylene carbonate (PC) and gamma -butyrolactone (GBL). The non-aqueous solvent is of a weight composition in an area in a triangular phase diagram (EC, PC, GBL) surrounded by a point (70, 30, 0), a point (55, 15, 30), a point (15, 55, 30) and a point (30, 70, 0). A gel electrolyte battery employing this electrolyte is also disclosed.