Invention Grant
- Patent Title: Lithium metal oxide cathode materials and method to make them
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Application No.: US15311863Application Date: 2015-05-14
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Publication No.: US11205776B2Publication Date: 2021-12-21
- Inventor: Yu-Hua Kao , Murali G. Theivanayagam , Jui-Ching Lin , Jianxin Ma , Liang Chen , Michael Lowe , Hideaki Maeda , Ing-Feng Hu
- Applicant: Dow Global Technologies LLC
- Applicant Address: US MI Midland
- Assignee: Dow Global Technologies LLC
- Current Assignee: Dow Global Technologies LLC
- Current Assignee Address: US MI Midland
- Agent William R Hales
- International Application: PCT/US2015/030746 WO 20150514
- International Announcement: WO2015/183568 WO 20151203
- Main IPC: H01M4/525
- IPC: H01M4/525 ; H01M4/505 ; H01M4/58 ; C01G53/00 ; H01M4/36 ; H01M10/0525 ; H01M10/052 ; H01M4/02

Abstract:
A method for forming lithium metal oxides comprised of Ni, Mn and Co useful for making lithium ion batteries comprises providing precursor particulates of Ni and Co that are of a particular size that allows the formation of improved lithium metal oxides. The method allows the formation of lithium metal oxides having improved safety while retaining good capacity and rate capability. In particular, the method allows for the formation of lithium metal oxide where the primary particle surface Mn/Ni ratio is greater than the bulk Mn/Ni. Likewise the method allows the formation of lithium metal oxides with secondary particles having much higher densities allowing for higher cathode densities and battery capacities while retaining good capacity and rate performance.
Public/Granted literature
- US20170084919A1 IMPROVED LITHIUM METAL OXIDE CATHODE MATERIALS AND METHOD TO MAKE THEM Public/Granted day:2017-03-23
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