POLYMER SOLID ELECTROLYTE COMPOSITION

• Main Authors: YASUDA TADASHI, MASAKA FUSAZUMI
• Format: Patent
• Language: English
• Published: 22.12.1998
• Edition: 6
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PROBLEM TO BE SOLVED: To obtain the subject composition capable of manifesting a high ionic conductivity and a high mechanical strength by including components comprising a thermoplastic polyester elastomer and a rubber containing a polar group, and an electrolytic solution dissolving an alkali metal salt. SOLUTION: This composition comprises (A) (i) 20-90 wt.% thermoplastic polyester elastomer and (ii) 10-80 wt.% rubber having a polar group, (B) an electrolyte obtained by dissolving an alkali metal salt. The component (i) preferably has <=55 shore D hardness, and <=200 deg.C melting point. For example, an acrylonitrile-butadiene rubber, an ethylene-acryl rubber, etc., are preferable as the component (ii). The component B is preferably obtained by dissolving an electrolyte comprising a lithium salt in a nonaqueous solvent. The composition can be expected to be used as the ionic conductor used for a lithium secondary battery, etc.