Positive electrode and secondary battery using the same

Abstract

A positive electrode disclosed here includes: a positive electrode current collector; and a positive electrode active material layer supported by the positive electrode current collector. The positive electrode active material layer includes a first lithium composite oxide having a layered structure and a second lithium composite oxide having a layered structure. In the first lithium composite oxide, a mole ratio of Li to a metal other than Li is 0.90 to 0.97. In the second lithium composite oxide, a mole ratio of Li to a metal other than Li is 1.10 to 1.20. A crystallite size of a (104) plane of the first lithium composite oxide is 400 Å to 600 Å. A crystallite size of a (104) plane of the second lithium composite oxide is larger than the crystallite size of the (104) plane of the first lithium composite oxide.

Dependencies are inferred from the claim text.