Invention Grant
- Patent Title: Positive electrode material for lithium ion battery with nonaqueous electrolyte, and battery using the same
- Patent Title (中): 具有非水电解质的锂离子电池用正极材料及使用其的电池
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Application No.: US11912819Application Date: 2006-04-28
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Publication No.: US08728666B2Publication Date: 2014-05-20
- Inventor: Takanori Itou , Hideaki Horie , Takamitsu Saito , Satoshi Matsumoto
- Applicant: Takanori Itou , Hideaki Horie , Takamitsu Saito , Satoshi Matsumoto
- Applicant Address: JP Kanagawa JP Tokyo
- Assignee: Nissan Motor Co., Ltd.,Sumitomo Metal Mining Co., Ltd.
- Current Assignee: Nissan Motor Co., Ltd.,Sumitomo Metal Mining Co., Ltd.
- Current Assignee Address: JP Kanagawa JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2005-133667 20050428
- International Application: PCT/JP2006/309054 WO 20060428
- International Announcement: WO2006/118279 WO 20061109
- Main IPC: H01M4/52
- IPC: H01M4/52 ; H01M4/525

Abstract:
An object of the present invention is to provide a positive electrode material for non-aqueous electrolyte lithium-ion battery which capable of discharging high output power and inhibiting cracking of secondary particle in the cyclic endurance at a high temperature. The above object can be attained by a positive electrode material for non-aqueous electrolyte lithium-ion battery of the present invention, characterized in that said material comprises secondary particles composed of primary particles of lithium nickel composite oxide containing the primary particles having different aspect ratios, and that at least a part of said primary particles having different aspect ratios are arranged so as to make the longitudinal direction (the long side direction) thereof oriented toward the center of the secondary particle.
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