Invention Grant
- Patent Title: High capacity positive electrodes for use in lithium-ion electrochemical cells and methods of making same
- Patent Title (中): 用于锂离子电化学电池的大容量正极及其制造方法
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Application No.: US14241304Application Date: 2012-08-21
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Publication No.: US09385368B2Publication Date: 2016-07-05
- Inventor: Leif Christensen , Jerome E. Scanlan , Anthony P. Lindert
- Applicant: Leif Christensen , Jerome E. Scanlan , Anthony P. Lindert
- Applicant Address: US MI St. Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MI St. Paul
- Agent Adam Bramwell
- International Application: PCT/US2012/051644 WO 20120821
- International Announcement: WO2013/070298 WO 20130516
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/04 ; H01M4/505 ; H01M4/525 ; H01M4/131 ; H01M4/1391 ; H01M10/0525 ; C01G53/00
Abstract:
Positive electrode for lithium-ion electrochemical cells are provided that have capacity retentions of greater than about 95% after 50 charge-discharge cycles when comparing the capacity after cycle 52 with the capacity after cycle 2 when cycled between 2.5 V and 4.7 V vs. Li/Li+ at 30° C. Compositions useful in the provided positive electrodes can have the formula, Li1+x(NiaMnbCoc)1−x O2, wherein 0.05≦x≦0.10, a+b+c=1, 0.6≦b/a≦1.1, c/(a+b)
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