Polymer solid electrolyte

Details Polymer solid electrolyte Polymer solid electrolyte

H - Electricity

01

M

H01M 6/18 (2006.01) C08G 65/08 (2006.01) C08G 65/22 (2006.01) C08L 71/02 (2006.01) H01G 9/15 (2006.01) G01N 27/28 (2006.01) G02F 1/15 (2006.01)

Patent

CA 2175950

Disclosed is a polymer solid electrolyte which is superior to a conventional solid electrolyte in ion conductivity and also superior in processing characteristics, molding characteristics, mechanical strength and flexibility. The polymer solid electrolyte is produced by formulating a soluble electrolyte salt compound with a polyether copolymer having an oligooxyethylene side chain and an electrolyte salt compound which is soluble in the polyether copolymer, the polyether polymer being a solid random copolymer having a main chain structure consisting of 5 to 30 molar % of a structural unit of the following formula (1) and 95 to 70 molar % of a structural unit of the following formula (2), and the polyether polymer having a polymerization degree n of an oxyethylene unit of the side chain part of the formula (1) of 1 to 12, a number-average molecular weight of 100,000 to 2,000,000, a glass transition point measured by a differential scanning calorimeter (DSC) of riot more than -60°C and heat of fusion of not more than 70 J/g.

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