US 12,170,350 B2
Lithium secondary battery including separator with ceramic layer having first ceramic particle bonded to second ceramic particle and manufacturing method the same
Dongjun Kim, Gyeonggi-do (KR); Yeol Mae Yeo, Gyeonggi-Do (KR); Yoon Sung Lee, Gyeonggi-do (KR); Jieun Lee, Gyeonggi-do (KR); Sang Mok Park, Gyeonggi-do (KR); and Seung-Min Oh, Incheon (KR)
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 Feb. 10, 2022, as Appl. No. 17/668,973.
Application 17/668,973 is a division of application No. 16/573,037, filed on Sep. 17, 2019, granted, now 11,289,768.
Claims priority of application No. 10-2018-0161204 (KR), filed on Dec. 13, 2018.
Prior Publication US 2022/0166105 A1, May 26, 2022
Int. Cl. H01M 10/0525 (2010.01); H01M 50/417 (2021.01); H01M 50/434 (2021.01); H01M 50/451 (2021.01); H01M 50/489 (2021.01)
CPC H01M 10/0525 (2013.01) [H01M 50/434 (2021.01); H01M 50/451 (2021.01); H01M 50/489 (2021.01); H01M 50/417 (2021.01); H01M 2220/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of manufacturing a lithium secondary battery comprising a ceramic coating separator, the method comprising:
coating first ceramic particles and second ceramic particles on one or both surfaces of a separator substrate, wherein the first ceramic particles comprise an epoxide group, and the second ceramic particles comprise an amine group; and
heat-treating the first ceramic particles and the second ceramic particles so as to form crosslinking between the epoxide group of the first ceramic particles and the amine group of the second ceramic particles to form a binder-free ceramic layer on said one or both surfaces of the separator substrate, thereby forming the ceramic coating separator,
wherein ceramic coating separator is binder-free.