Patent ID: 11862794
Assignee: BATTELLE MEMORIAL INSTITUTE
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 5:
6. The solid-state method of claim 1, further comprising preparing the solid hydroxide precursor by:
preparing a 1.5-2.5 M solution comprising metal salts in water, the metal salts comprising a nickel (II) salt, a manganese (II) salt, a cobalt (II) salt, and optionally one or more dopant metal salts, wherein a mole fraction x of the nickel (II) salt in the solution is ≥0.6, a mole fraction y of the manganese (II) salt is 0.01≤y<0.2, a mole fraction z of the one or more dopant metal salts is 0≤z≤0.05, a mole fraction of the cobalt (II) salt is 1−x−y−z, and x+y+z≤1.0;
combining the solution comprising metal salts in water with aqueous NH3 and aqueous NaOH or KOH to provide a combined solution having a pH of 10.5-12 and a combined metal salt concentration of 0.1 M to 3 M;
aging the combined solution for 5 hours to 48 hours at a temperature of 25° C. to 80° C. to co-precipitate hydroxides of nickel, manganese, and cobalt to provide the solid hydroxide precursor; and
drying the solid hydroxide precursor, wherein the solid hydroxide precursor comprises particles having a mean particle size of 0.5 μm to 2.5 μm.