Invention Grant
- Patent Title: Method for manufacturing lithium hydroxide powder, method for manufacturing positive electrode active material for lithium secondary cell, and package
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Application No.: US16976103Application Date: 2019-02-28
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Publication No.: US11932548B2Publication Date: 2024-03-19
- Inventor: Kenji Gouda , Keiichiro Suzuki , Jun-ichi Kageura
- Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED , TANAKA CHEMICAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED,TANAKA CHEMICAL CORPORATION
- Current Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED,TANAKA CHEMICAL CORPORATION
- Current Assignee Address: JP Tokyo; JP Tokyo
- Agency: Rimon PC
- Priority: JP 18036807 2018.03.01
- International Application: PCT/JP2019/007868 2019.02.28
- International Announcement: WO2019/168110A 2019.09.06
- Date entered country: 2020-08-27
- Main IPC: C01D15/02
- IPC: C01D15/02 ; B65D77/22 ; B65D81/18 ; B65D85/84 ; H01M4/04 ; H01M4/48 ; H01M10/0525
Abstract:
A method for manufacturing a lithium hydroxide powder includes a pulverizing step of pulverizing coarse particles of lithium hydroxide to obtain lithium hydroxide powder; and a carbonation-suppressing step of storing the lithium hydroxide powder in an airtight container in an atmosphere satisfying requirements (1) and (2).
(1) A partial pressure of carbon dioxide gas is 100 Pa or less with respect to a total amount of gas present in the airtight container.
(2) A relative humidity in the airtight container is 60% or less.
(1) A partial pressure of carbon dioxide gas is 100 Pa or less with respect to a total amount of gas present in the airtight container.
(2) A relative humidity in the airtight container is 60% or less.
Information query
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