The present invention is to provide a non-aqueous electrolyte secondary battery that can suppress a decrease in discharge performance and a decrease in residual capacity after storage at charged state under high temperature. The non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a non-aqueous electrolyte, and a separator provided between the positive electrode and the negative electrode, the positive electrode active material includes lithium cobaltate and an erbium compound 22 fixed to at least part of the surface of this lithium cobaltate 21, and the non-aqueous electrolyte contains 1,3-bis(isocyanatomethyl)cyclohexane.