Patent ID: 11932554
Assignee: AMERICAN HYPERFORM, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC C  H

Claim 0:
1. A method for preparing lithium nickel manganese cobaltate material for use in lithium batteries as a cathode active material, the method comprising:
converting metal sulfates in a mixed metal sulfate solution to metal hydroxides with a hydroxide until a solution pH from 10 to 11 is reached to produce a slurry;
filtering the slurry to produce a filtrate;
washing the filtrate;
lithiating the filtrate with an aqueous lithium salt slurry to produce a mixture;
removing water from the mixture to produce a dried material;
initially milling and screening the dried material until the dried material passes through a −100 to −500 screen;
furnacing the dried material above 700 degrees Celsius for 0.5 to 4 hours in the presence of oxygen to produce a LiNixMnyCozO2 material; and
secondarily milling and screening the LiNixMnyCozO2 material until the LiNixMnyCozO2 material is from −30 to −70 microns to produce the lithium nickel manganese cobaltate material.