METHOD FOR MANUFACTURING NONAQUEOUS LITHIUM TYPE ELECTRIC STORAGE ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous lithium type electric storage element having high output characteristics and minimizing generation of gas when stored.SOLUTION: A method for manufacturing a nonaqueous lithium type electric storage element comprises the steps of: (1) predoping for allowing a negative electrode active material of a negative electrode body to occlude lithium ions in a state where the negative electrode body is immersed in a first nonaqueous electrolyte that includes less than 0.05 wt.% reduced compound which includes an electrolyte including lithium ions and has 1.0 V or more and less than 2.0 V of a negative electrode reduction potential at 25°C; and (2) aging for charging/discharging the nonaqueous lithium type electric storage element including the negative electrode body in a state where the negative electrode body is immersed in a second nonaqueous electrolyte that includes 0.05 wt.% or more and 15 wt.% or less reduced compound.