Production method for non-aqueous electrolyte secondary battery active material providing lithium insertion and solution contact
摘要
說明書
In the production method of the negative electrode active material of the present invention, after forming the silicon compound into the electrode, inserting lithium and contacting with the solution B and solution C may be performed. When the negative electrode active material is prepared like this, since the active Li portion contained in the silicon compound is deactivated in advance, even under low humidity environment, an excess Li compound is difficult to be generated on a surface of the active material, and the battery characteristics may be prevented from deteriorating.
Further, in order to achieve the above object, the present invention provides a non-aqueous electrolyte secondary battery having an electrode containing the negative electrode active material for non-aqueous electrolyte secondary batteries produced by the any one of the production methods of negative electrode active material for non-aqueous electrolyte secondary batteries.
By this configuration, since the battery characteristics may be suppressed from deteriorating due to heat generation during preparation of the electrode, generation of an excess Li compound on an electrode surface, or the like, non-aqueous electrolyte secondary batteries having excellent battery characteristics are formed.
