| 摘要 |
PROBLEM TO BE SOLVED: To provide an amorphous solid electrolyte with high ion conductivity and small temperature dependence that is suitable for a battery by blending, to a polysiloxane-polyether random copolymer, an electrolytic salt compound soluble. SOLUTION: This polymer solid electrolyte is formed of a polysiloxane- polyether copolymer, which is a solid random copolymer having a main chain structure consisting of a structural unit of formula I and a structural unit of formula II, wherein X<1> and X<2> in the formula I represent a substituent containing a cyclic ether, and an electrolytic salt compound soluble to this copolymer. This solid electrolyte is used for a battery for electronic equipment. The polysiloxane-polyether copolymer is suitably formed of 5-40 mol.% of the structural unit of the formula I and 95-60 mol.% of the structural unit of the formula II, and preferably 10-30 mol.% of the structural unit of formula I and 90-70 mol.% of the structural unit of the formula II. This solid electrolyte has high ion conductivity even at low temperatures. |
