Production method for non-aqueous electrolyte secondary battery active material providing lithium insertion and solution contact
摘要
說明書
Further, the present invention provides a non-aqueous electrolyte secondary battery provided with the negative electrode for the non-aqueous electrolyte secondary batteries produced according to the production method of the negative electrode for the 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.
Further, in order to achieve the above object, the present invention is a production method of a negative electrode active material for non-aqueous electrolyte secondary batteries containing a silicon compound SiOx (0.5≤×≤1.6) containing lithium and provides a production method of a negative electrode active material for non-aqueous electrolyte secondary batteries having the steps of: making a silicon compound contact with a solution that contains lithium and a straight chain polyphenylene compound or its derivative and has an ether-based solvent as the solvent, or a solution that contains lithium and an amine and has the ether-based solvent as the solvent to insert the lithium into the silicon compound.
When the solutions like these are used, the Li may be more uniformly inserted into the silicon compound, and the Li may be efficiently inserted.
