Patent ID: 7914930
Filing Date: 2011-03-29
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A method for producing a non-aqueous electrolyte secondary battery that comprises: a positive electrode capable of electrochemically absorbing and desorbing lithium; a negative electrode capable of electrochemically absorbing and desorbing lithium, said negative electrode including an active material layer that comprises an active material represented by SiO a non-aqueous electrolyte, said method comprising the steps of depositing the active material by sputtering, vacuum evaporation, thermal spraying, or CVD on the current collector to form the active material layer; reacting lithium with the active material of the negative electrode by bringing a metal film that is composed mainly of lithium into contact with a surface of said active material layer of the negative electrode to form a precursor and heating the precursor in an air atmosphere with a dew point of −40° C. or less or a dehydrated inert gas atmosphere at 130° C. or more and 170° C. or less; and thereafter combining the negative electrode with the positive electrode to form an electrode assembly.