US 12,325,630 B2
Method of manufacturing sulfide-based solid electrolyte without generation of impurities, and sulfide-based solid electrolyte manufactured using same
Sun Ho Choi, Incheon (KR); Yong Jun Jang, Seongnam-si (KR); In Woo Song, Gwacheon-si (KR); Sang Soo Lee, Goyang-si (KR); So Young Kim, Jeongeup-si (KR); Seong Hyeon Choi, Changwon-si (KR); Sa Heum Kim, Suwon-si (KR); and Sang Heon Lee, Yongin-si (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. 18, 2022, as Appl. No. 17/675,416.
Claims priority of application No. 10-2021-0023789 (KR), filed on Feb. 23, 2021.
Prior Publication US 2022/0267149 A1, Aug. 25, 2022
Int. Cl. C01B 17/22 (2006.01); C01B 25/14 (2006.01); H01M 10/0562 (2010.01)
CPC C01B 17/22 (2013.01) [C01B 25/14 (2013.01); H01M 10/0562 (2013.01); C01P 2002/72 (2013.01); C01P 2002/82 (2013.01); C01P 2006/40 (2013.01); H01M 2300/0068 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of manufacturing a sulfide-based solid electrolyte, the method comprising:
mixing a raw material with an organic solvent to manufacture a mixed solution;
a heating step of heating and agitating the mixed solution;
a cooling step of cooling and agitating the heated mixed solution;
a re-heating step of heating and agitating the cooled mixed solution; and
a heat treatment step of heat-treating the re-heated mixed solution,
wherein the mixed solution is heated to 40° C. or higher than 40° C. and the mixed solution is cooled to 30° C. or lower than 30° C.,
wherein the agitating in the heating step is performed for 30 minutes to 3 hours, the agitating in the cooling step is performed for 30 minutes to 3 hours, and the agitating in the re-heating step is performed for 12 to 14 hours.