Metal composite hydroxide and method for producing positive electrode active material for lithium secondary battery
AssigneeTanaka Chemical Corporation
InventorRyota SAKAIDA
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Abstract
The present invention relates to a metal composite hydroxide used as a precursor of a positive electrode active material for a lithium secondary battery, said metal composite hydroxide comprising at least one metal element selected from the group consisting of Ni, Co, and Mn, and satisfying all of the following requirements (1) to (4): (1) An average particle strength is 10 MPa or more and less than 45 MPa; (2) A molar ratio (Mn/Co) of manganese to cobalt is more than 1.0; (3) A BET specific surface area is less than 40 m2/g; (4) An average particle diameter D50 is 4 μm or less.
Claims4
A metal composite hydroxide used as a precursor of a positive electrode active material for a lithium secondary battery, said metal composite hydroxide comprising at least one metal element selected from the group consisting of Ni, Co, and Mn, and satisfying all of the following requirements (1) to (4):
- (1) An average particle strength is 10 MPa or more and less than 45 MPa;
- (2) A molar ratio (Mn/Co) of manganese to cobalt is more than 1.0;
- (3) A BET specific surface area is less than 40 m2/g;
- (4) An average particle diameter D50 is 4 μm or less.
Dependencies are inferred from the claim text.