A positive electrode and a non-aqueous electrolyte secondary battery using the same non-aqueous electrolyte secondary battery
2014
A containing lithium-nickel-based composite oxide as the positive electrode active material, in a large capacity and a non-aqueous electrolyte secondary battery having a large area, to suppress the degradation of the electrode due to the nonuniformity of the voltage in the electrode plane, the cycle providing a means capable of improving the characteristics. The value of the ratio of A cell area with respect to the rated capacity (the projected area of the cell including up battery outer body) is at 5 cm 2 / And positive electrode current collector, wherein formed on the surface of the positive electrode current collector having a positive electrode active material layer containing a positive electrode active material comprising a lithium-nickel-based complex oxide and a spinel type lithium manganese composite oxide, The average of the lithium nickel composite oxide secondary particle diameter (D50) D50 (A) [μm], and the content in the positive electrode active material layer and the A [wt%], the average of the spinel type lithium manganese complex oxide secondary particle diameter (D50) D50 (B) [μm], when the content in the positive electrode active material layer and the B [wt%], the following equation 1 and equation 2 below: [Number 1] To satisfy the non-aqueous electrolyte secondary battery for the positive electrode.
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