POLYMER SOLID ELECTROLYTE

• Main Authors: HIROKAWA YOSHITSUGU, MAEDA KOICHIRO
• Format: Patent
• Language: English
• Published: 04.10.1994
• Edition: 5
• 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

PURPOSE:To obtain the subject novel electrolyte having high ionic conductivity by using a mixture prepared by blending two kinds of polymer compounds having different molecular weight in a specific ratio as an amorphous polymer containing nitrile at the side chain and an unsaturated bond at the main chain. CONSTITUTION:The objective electrolyte comprises (A) an amorphous polymer containing nitrile at the side chain and an unsaturated bond at the main chain, composed of 40-95wt.% of a polymer compound having >=10,000 weight-average molecular weight and 60-5wt.% of a polymer compound having <10,000 weight- average molecular weight and (B) an alkali metal salt (lithium perchlorate). The component A, for example, is obtained by radically polymerizing a polymerizable nitrile compound with a compound capable of introducing an unsaturated bond to the main chain of a polymer. Acrylonitrile, etc., is preferable as the polymerizable nitrile and 1,3-butadiene, etc., are preferable as the compound capable of introducing an unsaturated bond.