LITHIUM ION POLYMER BATTERY

• Main Authors: TANG WEI-PING, HARADA TOSHIHIKO, OGO YOSHIAKI, MINAMIMOTO NORIKO, KONDO TSUTOMU
• Format: Patent
• Language: English
• Published: 25.12.2008
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PROBLEM TO BE SOLVED: To provide an ion conductive boron-polymer complex electrolyte membrane in which known compounds are used as the raw material, and to provide a lithium ion polymer battery that uses it. SOLUTION: This is the ion conductive boron-polymer complex electrolyte membrane constituted of organic boron compound, polyethylene oxide based oxygen atom containing organic polymer compound, alkaline metal electrolyte salt, and polyurethane. Regarding the composition of a complex reaction product, the organic boron compound and the polyethylene oxide based oxygen atom, containing organic polymer compound, are contained at a mol ratio of 0.5 to 3:3, and the alkaline metal electrolyte salt is contained so that the mol ratio of an oxygen atom and an alkaline metal atom contained in the oxygen atom, containing organic polymer compound, is 5 to 20:1. Polyurethane of 5 to 40 wt.% is added to the electrolyte. Regarding the oxygen atom containing organic polymer compound, polyalkylene oxide di-methyl ether, in which both ends of polyalkylene oxide are substituted by methoxide, is added to the polyalkylene oxide. Ion conductivity at normal temperature is 10-3S/cm or higher. The lithium ion polymer battery uses the ion conductive boron-polymer complex electrolyte membrane. COPYRIGHT: (C)2009,JPO&INPIT