| abstract |
A negative electrode comprising lithium metal or a lithium alloy; anode; And And a polymer gel electrolyte contacting the cathode, Wherein the polymer gel electrolyte has an ion conductivity of 10 -3 S / cm or more, a lithium ion transmission rate of 0.15 or more, and a lithium ion mobility of 10 -6 cm 2 / V ยท sec or more, Wherein the polymer gel electrolyte comprises a lithium salt, a polymer capable of forming a complex with a lithium salt, an insulating inorganic filler, and an organic solvent, Wherein the organic solvent is inert to lithium, the anion radius of the lithium salt is 2.5 ANGSTROM or more, and the molecular weight of the lithium salt is 145 or more. |