POSITIVE ELECTRODE ACTIVE SUBSTANCE, POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
2 Assignments
0 Petitions
Accused Products
Abstract
[Object] Provided is a means which is capable, with respect to a non-aqueous electrolyte secondary battery, of suppressing a decrease in capacity when the battery is used for a long period of time, and improving cycle characteristics.
[Solving Means] Disclosed is a positive electrode active substance for a non-aqueous electrolyte secondary battery comprising 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, and the ratio value (D2/D1) of the average particle diameter of the secondary particles (D2) to the average particle diameter of the primary particles (D1) is 11 or more.
18 Citations
30 Claims
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1-15. -15. (canceled)
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16. 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 ratio value (D2/D1) of the average particle diameter of the secondary particles (D2) to the average particle diameter of the primary particles (D1) is 15 to 50, and the crystallite diameter of the positive electrode active substance is 0.4 μ
m or less. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- m or less, the ratio value (D2/D1) of the average particle diameter of the secondary particles (D2) to the average particle diameter of the primary particles (D1) is 15 to 50, and the crystallite diameter of the positive electrode active substance is 0.4 μ
Specification