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    • 58. 发明申请
    • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    • 非水电解质二次电池
    • US20110177391A1
    • 2011-07-21
    • US13120328
    • 2009-09-17
    • Kazunari OokitaFumiharu NiinaHiroyuki FujimotoChihiro Yada
    • Kazunari OokitaFumiharu NiinaHiroyuki FujimotoChihiro Yada
    • H01M4/36H01M4/50H01M4/52H01M4/583
    • H01M10/052H01M4/131H01M4/525H01M4/625
    • A non-aqueous electrolyte secondary battery using lithium-containing transition metal composite oxide which has a layer structure, contains a lot of Ni and Mn and is inexpensive as a positive electrode active material and attaining high output characteristics even under low temperature environment is provided.The non-aqueous electrolyte secondary battery includes a positive electrode 11 containing a positive electrode active material, a negative electrode 12 containing a negative electrode active material and a non-aqueous electrolyte 14 having lithium ion conductivity, wherein lithium-containing transition metal composite oxide having a layer structure and being represented by a general formula Li1+xNiaMnbCocO2+d wherein x, a, b, c and d satisfy x+a+b+c=1, 0.25≦a≦0.60, 0.25≦b≦0.60, 0≦c≦0.40, 0≦x≦0.10, 0.7≦a/b≦2.0 and −0.1≦d≦0.1 is used as the positive electrode active material of positive electrode, and the surface of positive electrode active material is covered with an amorphous carbon material and a conductive agent of amorphous carbon material is inserted between particles of the positive electrode active material.
    • 提供具有层状结构的含有锂的过渡金属复合氧化物的非水电解质二次电池,含有大量的Ni和Mn,并且作为正极活性物质便宜,并且即使在低温环境下也获得高的输出特性。 非水电解质二次电池包括含有正极活性物质的正极11,含有负极活性物质的负极12和具有锂离子传导性的非水电解质14,其中含有锂的过渡金属复合氧化物具有 其中x,a,b,c和d满足x + a + b + c = 1,0.25≦̸ a≦̸ 0.60,0.25< 1; b≦̸ 0.60, 0≦̸ c≦̸ 0.40,0和nlE; x和nlE; 0.10,0.7≦̸ a / b≦̸ 2.0和-0.1& nlE; d≦̸ 0.1用作正极正极活性物质,正极活性物质的表面被覆盖 将无定形碳材料和无定形碳材料的导电剂插入正极活性物质的颗粒之间。