| 摘要 |
PROBLEM TO BE SOLVED: To provide: a nonaqueous electrolyte reducing the electrical conductivity of an electrolyte by using a polymerization reaction when a battery is used at high temperatures or overcharged, and thereby capable of increasing the safety of the battery; and a secondary battery including the nonaqueous electrolyte.SOLUTION: An electrolyte of a secondary battery includes: a nonaqueous cyclic solvent; a catalyst for a polymerization reaction, which is activated depending on temperature or voltage to induce the polymerization reaction of the nonaqueous cyclic solvent; and an electrolyte salt. At least one or more selected from the group consisting of triethylamine, DBU, KOCH3, NaOCH3, KOC2H5, NaOC2H5, NaOH, KOH, Al(acac)3, Cr(acac)3, Co(acac)2, Fe(acac)3, Mn(acac)3, Mn(acac)2, MoO2(acac)2, Zn(acac)2 and or the like are used for the catalyst for a polymerization reaction. The nonaqueous cyclic solvent is one or more selected from the group consisting of ethylene carbonate, propylene carbonate, butylene carbonate and γ-butyrolactone. |
