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    • 17. 发明申请
    • CATHODE ACTIVE MATERIAL AND LITHIUM ION SECONDARY BATTERY
    • 阴极活性材料和锂离子二次电池
    • US20070141469A1
    • 2007-06-21
    • US11613064
    • 2006-12-19
    • Takashi TokunagaYoshiaki ObanaHiroyuki Akashi
    • Takashi TokunagaYoshiaki ObanaHiroyuki Akashi
    • H01M4/52H01M4/50H01M4/62
    • H01M10/0525H01M4/131H01M4/505H01M4/525H01M4/622
    • A lithium ion secondary battery is provided. The battery includes a positive electrode having at least a cathode active material and a binder, a negative electrode, an electrolyte, and a separator which are arranged between the positive electrode and the negative electrode, and in which an open circuit voltage per unit cell in a full charging state lies within (4.25V≦voltage≦6.00V). The cathode active material includes either a lithium-cobalt composite oxide expressed by a general formula: LiaCo1-xMexO2-b(Me denotes metal elements of at least one, two or more kinds selected from V, Cu, Zr, Zn, Mg, Al, and Fe; 0.9≦a≦1.1; 0≦x≦0.3; and −0.1≦b≦0.1) or a lithium-cobalt-nickel-manganese oxide expressed by a general formula: LiaNi1-x-y-zCoxMnyMezO2-b(0.9≦a≦1.1; 0
    • 提供锂离子二次电池。 电池包括具有至少正极活性物质和粘合剂,负极,电解质和隔膜的正极,它们设置在正极和负极之间,其中每单位电池的开路电压 完全充电状态位于(4.25V <=电压<= 6.00V)内。 阴极活性材料包括由以下通式表示的锂 - 钴复合氧化物:由下列通式表示的锂 - 钴复合氧化物:Li 1 O x 2-b(Me表示选自V,Cu,Zr,Zn,Mg,Al和Fe中的至少一种,两种以上的金属元素; 0.9 <= a <= 1.1; 0 <= x <= 0.3;和-0.1 <= b <= 0.1)或由以下通式表示的锂 - 钴 - 镍 - 锰氧化物:Li&lt; 1&lt; 1-xyz&lt; / SUB (0.9 <= a <= 1.1; 0 x <0.4; 0