JP2583762B

PURPOSE:To provide a solid polyelectrolyte having a high ion conductivity and excellent film forming properties and strength, consisting of a composite material of a polymer matrix having a main chain having a regular supermolecular structure and an ionizable, group on its side with a salt of an electrolyte. CONSTITUTION:A solid polyelectrolyte having a high ion conductivity and excel lent film forming properties and strength is composed of a polymer matrix having a main chain having a regular supermolecular structure (e.g., polyglutamic acid, etc.) and an ionizable group (e.g., a polyethylene oxide chain) on its side chain with a salt of an electrolyte (e.g., LiClO4, etc.). The solid polyelectrolyte, i.e., the composite material of the polymer material with the electrolyte can be prepd. by immersing the polymer matrix film in a polymer- insoluble soln. contg. the electrolyte to impregnate the film with the electrolyte. The solid polyelectrolyte can be used in a wholly solid polymer secondary battery, a temperature sensor, an electroluminescent element, etc.