Nickel-containing hydroxide, cathode active material with nickel-containing hydroxide as precursor, and method for producing nickel-containing hydroxide
AssigneeTanaka Chemical Corporation
InventorYudai YASUNO
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Abstract
Provided is a nickel-containing hydroxide as a precursor of a cathode active material for a non-aqueous electrolyte secondary battery, wherein the nickel-containing hydroxide is secondary particles formed by agglomeration of a plurality of primary particles, and the primary particles have an average area of 0.035 μm2 or more.
Claims10
A nickel-containing hydroxide as a precursor of a cathode active material for a non-aqueous electrolyte secondary battery, wherein the nickel-containing hydroxide is secondary particles formed by agglomeration of a plurality of primary particles, and the primary particles have an average area of 0.035 μm2 or more.
A method for producing a nickel-containing hydroxide as a precursor of a cathode active material for a non-aqueous electrolyte secondary battery, wherein the nickel-containing hydroxide is secondary particles formed by agglomeration of a plurality of primary particles, the method comprising:
- obtaining the nickel-containing hydroxide by a crystallization reaction by continuously supplying a metal-containing aqueous solution containing nickel, a complexing agent, and an alkaline aqueous solution to a reaction tank, and
- continuously extracting a slurry containing the nickel-containing hydroxide from the reaction tank,
- wherein a flow rate of the metal-containing aqueous solution containing nickel supplied to the reaction tank is 0.25 m/s or less.
Dependencies are inferred from the claim text.