Lithium-ion rechargeable battery

Abstract

The present invention relates to a positive electrode including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder, wherein the positive electrode active material includes a single-particle type lithium nickel-based oxide having a Ni content of 70 mol% or less, the positive electrode conductive material includes a linear conductive material and a dot-like conductive material, and F defined by the following formula (1) CR satisfies 12 to 20, and relates to a lithium secondary battery. Formula (1): F CR =dc1×dc2×(D 50,a ) In the formula (1), dc1 is the true density of the linear conductive material (unit: g / cm 3 ), dc2 is the true density of the dot-like conductive material (unit: g / cm 3 ), and D 50,a is the D of the positive electrode active material 50 (unit: μm).

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