METHOD FOR FORMING LITHIUM METAL AND INORGANIC MATERIAL COMPOSITE THIN FILM AND METHOD FOR PRE-LITHIATION OF NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY BY USING SAME

摘要

A method for pre-lithiation of a negative electrode and a negative electrode formed by the method, the method including forming a mixture of inorganic material powder and molten lithium, forming a lithium metal-inorganic material composite ribbon, rolling the ribbon into a film and bonding the lithium metal-inorganic material composite film on a surface of a negative electrode to form a lithium metal-inorganic material composite layer on the surface of the negative electrode. This method reduces the deterioration of lithium during application of a mixture slurry and a negative electrode for a secondary battery, manufactured by the method for pre-lithiation, has improved initial irreversibility, and a secondary battery manufactured using such a negative electrode has excellent charging and discharging efficiency.