Invention Grant
- Patent Title: Method for manufacture of transition metal oxide fine particles
-
Application No.: US17050270Application Date: 2019-05-10
-
Publication No.: US11420258B2Publication Date: 2022-08-23
- Inventor: Sanghyun Hong , Jihyun Kim , Seojin Lee , Sangeun Shim , Jiyoung Jung , Sosan Hwang , Yooseok Kwon
- Applicant: LG Electronics Inc.
- Applicant Address: KR Seoul
- Assignee: LG Electronics Inc.
- Current Assignee: LG Electronics Inc.
- Current Assignee Address: KR Seoul
- Agency: Dentons US LLP
- Priority: KR10-2018-0054444 20180511,KR10-2019-0055021 20190510
- International Application: PCT/KR2019/005674 WO 20190510
- International Announcement: WO2019/216719 WO 20191114
- Main IPC: B22F9/00
- IPC: B22F9/00 ; B22F9/24 ; C01G39/02 ; C01G41/02 ; B22F1/054 ; B22F1/142

Abstract:
The present invention provides a method for the manufacture of transition metal oxide fine particles, the method comprising the steps of: heating a strong-alkaline aqueous solution while stirring same; adding to and dissolving in the heated strong-alkaline aqueous solution a transition metal oxide; adding a strong-acid aqueous solution to the strong alkaline aqueous solution in which the transition metal oxide is dissolved, while stirring same, thereby re-dissolving a solid generated at the interface between the strong-alkaline aqueous solution and the strong-acid aqueous solution; adjusting the pH of the mixed aqueous solution resulting from mixing the strong-alkaline aqueous solution and the strong acid aqueous solution, through adjustment of the adding rate and amount of the strong-acid aqueous solution, to precipitate transition metal oxide fine particles; and separating the transition metal oxide fine particles from the mixed aqueous solution and sequentially washing, drying, and thermally treating the separated transition metal oxide fine particles.
Public/Granted literature
- US20210229179A1 METHOD FOR MANUFACTURE OF TRANSITION METAL OXIDE FINE PARTICLES Public/Granted day:2021-07-29
Information query