Positive electrode active material for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMotoharu Saitou, Yoshinori Aoki, Takeshi Ogasawara
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Abstract
A positive electrode active material for a nonaqueous electrolyte secondary battery contains silicon and lithium nickel complex oxide having a layered rock-salt structure and is composed of secondary particles formed of aggregated primary particles. Lithium nickel complex oxide contains 80 mol % or more of nickel, based on the total amount of metal excluding lithium, silicon content is 0.6 mass % or less based on the total amount of the positive electrode active material, and a porosity of the positive electrode active material is 0% or more and 1% or less.
Claims4
A positive electrode active material for a nonaqueous electrolyte secondary battery, comprising
- silicon and lithium nickel complex oxide having a layered rock-salt structure, the positive electrode active material being composed of secondary particles formed of aggregated primary particles, wherein
- the lithium nickel complex oxide contains 85 mol % or more and 95 mol % or less of nickel, based on a total amount of a metal excluding lithium,
- silicon content is 0.6 mass % or less based on a total amount of the positive electrode active material, and
- a porosity of the positive electrode active material is 0% or more and 1% or less.
Dependencies are inferred from the claim text.