| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid polymer electrolyte having an excellent mechanical characteristic, improved ion conductivity, and improved affinity with an liquid electrolyte by forming the solid polymer electrolyte with a specific quantity of a poly (acrylonitrile-methyl methacrylate) copolymer containing a specific content of acrylonitrile, lithium salt, and a specific quantity of the liquid electrolyte containing an aprotic solvent. SOLUTION: A polymer, lithium, and a liquid electrolyte made of an aprotic solvent are used. This solid polymer electrolyte is constituted of a poly (acrylonitrile-methyl methacrylate) copolymer or 90-50wt.% containing acrylonitrile of 0-90mol.%, lithium salt, and the liquid electrolyte of 10-50wt.% made of the aprotic solvent. When a ceramic filler of 5-40 pts.wt. is selectively added for an electrolyte composition of 100 pts.wt., the size stability can be improved. |
