Invention Grant
- Patent Title: Positive electrode active material, positive electrode for nonaqueous electrolyte battery, and nonaqueous electrolyte battery
- Patent Title (中): 正极活性物质，非水电解质电池用正极和非水电解质电池
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Application No.: US14321879Application Date: 2014-07-02
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Publication No.: US09337473B2Publication Date: 2016-05-10
- Inventor: Kazuhiko Nakamura , Tetsu Fujiwara , Akihito Kaneko
- Applicant: SANTOKU CORPORATION
- Applicant Address: JP Hyogo
- Assignee: SANTOKU CORPORATION
- Current Assignee: SANTOKU CORPORATION
- Current Assignee Address: JP Hyogo
- Agency: Sughrue Mion, PLLC
- Priority: JP2005-248378 20050801; JP2006-030428 20060208
- Main IPC: H01M4/131
- IPC: H01M4/131 ; B82Y30/00 ; C01G51/04 ; C01G51/00 ; C01G53/00 ; H01M4/485 ; H01M4/525 ; C01G45/00 ; C01G49/00 ; H01M10/0525 ; H01M4/58 ; H01M4/02
Abstract:
The present invention provides a nonaqueous electrolyte battery that exhibits high energy density and excellent cycle characteristics, as well as a cathode for use in such a battery, and a cathode active material for use in such a cathode. The cathode active material of the present invention has a composition represented by the formula (1) and a crystallite size in the (110) plane of not smaller than 85 nm: LixCo1-y-zNbyMzO2 (1) wherein M stands for at least one element selected from Mg, Y, rare earth elements, Ti, Zr, Hf, V, Ta, Cr, Mo, W, Mn, Fe, Ni, Cu, Zn, B, Al, Ga, C, Si, Sn, N, S, F, and Cl; and 0.9≦x≦1.1, 0.0002≦y≦0.01, and 0≦z≦0.05.
Public/Granted literature
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