Abstract:
A gel electrolyte produced through subjecting a polyether polymer which is prepared from an oxirane compound, has a polyethylene oxide and/or a polypropylene oxide structure in its main chain, and has a weight average molecular weight of 50,000 to 1,000,000, and a crosslinking agent, to a gelling reaction with a polymerization initiator and heat. The gel electrolyte is a polymer gel electrolyte having high performance capabilities, and thus allows efficient production of a cell, a capacitor and a photoelectric conversion element.
Abstract:
A polymer electrolyte composition characterized by comprising (1) a crosslinked polyether bipolymer which has a main chain comprising repeating units represented by the formula (i) and crosslinking units repeated by the formula (ii) and which has a weight-average molecular weight of 10 to 10 , (2) an electrolytic liquid comprising an aprotic organic solvent, (3) an additive, as an optional ingredient, which comprises an ether compound having an ethylene oxide unit, and (4) an electrolyte salt compound comprising a lithium salt compound. The composition is excellent in liquid retention and ionic conductivity, is usable in a wide temperature range, and has excellent electrochemical properties. (i) (ii) [In the formula, R is an ethylenically unsaturated group having an ester bond.]