Invention Grant
- Patent Title: Positive electrode active material for non-aqueous electrolyte secondary battery and method for producing the same
- Patent Title (中): 非水电解质二次电池用正极活性物质及其制造方法
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Application No.: US12270270Application Date: 2008-11-13
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Publication No.: US08460822B2Publication Date: 2013-06-11
- Inventor: Norihiro Yamamoto , Yutaka Kawatate , Hidekazu Hiratsuka , Takahiro Sakamoto
- Applicant: Norihiro Yamamoto , Yutaka Kawatate , Hidekazu Hiratsuka , Takahiro Sakamoto
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2008-279944 20081030
- Main IPC: H01M4/20
- IPC: H01M4/20 ; H01M4/13 ; H01M4/00
Abstract:
A positive electrode active material for a non-aqueous electrolyte secondary battery is provided. The positive electrode active material includes a composite oxide containing lithium and metal M other than lithium, and M contains Ni, Mn, and Co. The molar ratio of Ni to the total of Ni, Mn, and Co is from 0.45 to 0.65, and the molar ratio of Mn to the total of Ni, Mn, and Co is from 0.15 to 0.35. The positive electrode active material has a pressed density under a compression of 60 MPa of 3.3 g/cm3 or more and 4.3 g/cm3 or less. The positive electrode active material has a volume resistivity under a compression of 60 MPa of 100 Ω·cm or more and less than 1000 Ω·cm.
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