US 12,113,222 B2
Method for producing cathode material and cathode including cathode material produced thereby
Yong Sub Yoon, Seoul (KR); Hong Seok Min, Yongin-si (KR); Hajime Tsuchiya, Yokohama (JP); and Yuki Sasaki, Yokohama (JP)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Sep. 17, 2021, as Appl. No. 17/477,904.
Claims priority of application No. 10-2020-0128223 (KR), filed on Oct. 5, 2020.
Prior Publication US 2022/0109160 A1, Apr. 7, 2022
Int. Cl. H01M 4/62 (2006.01); H01M 4/131 (2010.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01)
CPC H01M 4/628 (2013.01) [H01M 4/131 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for producing a cathode material, the method comprising steps of:
preparing a coating solution by adding, mixing, and dissolving a coating material comprising lithium (Li) and niobium (Nb) in a solvent containing water (H2O);
forming a coating layer by spraying the coating solution onto surfaces of lithium oxide-based particles; and
heat-treating the coating layer;
wherein preparing the coating solution comprises:
an addition step of adding the coating material to the solvent containing water;
a dissolution step of dissolving the coating material in the solvent to obtain a solution; and
a neutralization step of neutralizing the solution by adding hydroxide thereto;
wherein the solvent further contains an adjuvant, and the adjuvant comprises a surfactant;
wherein the surfactant comprises at least one of an anionic surfactant and a nonionic surfactant; and
wherein the adjuvant is contained in an amount of 0.001 to 0.30 parts by weight based on 100 parts by weight of the solvent.