| abstract |
PROBLEM TO BE SOLVED: To provide a non-aqueous secondary battery capable of exhibiting excellent charge / discharge cycle characteristics even when charged at a high voltage. A non-aqueous secondary battery comprising a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte having a mixture layer containing a lithium-containing composite oxide as an active material, the surface of the active material or the composite material. The problem is solved by coating the surface of the agent layer with a polyvalent organic metal salt, particularly preferably a polyvalent organic lithium salt containing fluorine. [Selection figure] None |