| 摘要 |
PROBLEM TO BE SOLVED: To use an electrolyte as a new key material to improve film formability, an insulating property and fracture strength by forming it by adding an inorganic salt to a complex of poly(ethylene glycol)-bis-(carboxymethyl)ether and pyrazine or 4,4'-dipyridyl or 1,3,5-triazine. SOLUTION: One mol of poly(ethylene glycol)-bis-(carboxymethyl)ether (abbreviated symbol: PEO-CA) is compounded with, preferably, a nitrogen containing heterocyclic compound of one mol of pyrazine or 4,4'-dipyridyl, or two mol of 1,3,5-triazine. The ion conductivity of this electrolyte is preferably maximized at room temperature when 0.03 mol of lithium perchlorate that is an inorganic salt having a high degree of dissociation per oxyethylene unit of the PEO-CA is added and is high when the PEO-CA is in an amorphous form having a molecular weight of 200-650. It has flexibility due to hydrogen bond. Both the compounding and the addition of the inorganic salt are performed by means of stirring at around 60 deg.C for four hours in an atmosphere of argon or the like.
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