Positive electrode active substance, positive electrode material, positive electrode, and non-aqueous electrolyte secondary battery
First Claim
1. A positive electrode active substance for a non-aqueous electrolyte secondary battery comprising a composite oxide containing lithium and nickel,wherein the positive electrode active substance has a structure of secondary particles formed by aggregation of primary particles, the average particle diameter of primary particles (D1) is 0.9 μ
- m or less, the average particle diameter of the primary particles (D1) and the standard deviation (σ
) of the average particle diameter of the primary particles (D1) meet the relationship of D1/σ
2≧
24, and the tap density of the positive electrode active substance is 2.3g/cm3 or more.
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0 Petitions
Accused Products
Abstract
Disclosed is a positive electrode active substance for a non-aqueous electrolyte secondary battery including a composite oxide containing lithium and nickel, in which the positive electrode active substance has a structure of secondary particles formed by aggregation of primary particles. The average particle diameter of the primary particles (D1) is 0.9 μm or less. The average particle diameter of the primary particles (D1) and the standard deviation (σ) of the average particle diameter of the primary particles (D1) meet the relationship of D1/σ2≧24.
20 Citations
14 Claims
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1. A positive electrode active substance for a non-aqueous electrolyte secondary battery comprising a composite oxide containing lithium and nickel,
wherein the positive electrode active substance has a structure of secondary particles formed by aggregation of primary particles, the average particle diameter of primary particles (D1) is 0.9 μ - m or less, the average particle diameter of the primary particles (D1) and the standard deviation (σ
) of the average particle diameter of the primary particles (D1) meet the relationship of D1/σ
2≧
24, and the tap density of the positive electrode active substance is 2.3g/cm3 or more. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- m or less, the average particle diameter of the primary particles (D1) and the standard deviation (σ
Specification