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    • 2. 发明申请
    • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    • 非水电解质二次电池
    • US20090233176A1
    • 2009-09-17
    • US12089498
    • 2006-12-15
    • Yosuke KitaYukishige InabaKunihiko MineyaTakeshi Yao
    • Yosuke KitaYukishige InabaKunihiko MineyaTakeshi Yao
    • H01M4/58
    • H01M4/131H01M4/364H01M4/505H01M4/525H01M10/0525
    • An object of the present invention is to provide a non-aqueous electrolyte secondary battery that is excellent in cycle characteristics even in a high-temperature environment and high in thermal stability. The non-aqueous electrolyte secondary battery of the present invention comprises at least one of an active material A and an active material C, and an active material B as positive electrode active materials. The active material A is LixCoO2 (0.9≦x≦1.2). The active material B is LixNiyMnzM1-y-zO2 (0.9≦x≦1.2, 0.1≦y≦0.5, 0.2≦z≦0.5, 0.2≦1−y−z≦0.5 and 0.9≦y/z≦2.5; and M is at least one selected from the group consisting of Co, Mg, Al, Ti, Sr, Ca, V, Fe, Y, Zr, Mo, Tc, Ru, Ta, W and Re). The active material C is LixCo1-aMaO2 (0.9≦x≦1.2 and 0.005≦a≦0.1; and M is at least one selected from the group consisting of Mg, Al, Ti, Sr, Mn, Ni, Ca, V, Fe, Y, Zr, Mo, Tc, Ru, Ta, W, Re, Yb, Cu, Zn and Ba).
    • 本发明的目的在于提供即使在高温环境下也具有优异的循环特性且热稳定性高的非水电解质二次电池。 本发明的非水电解质二次电池包含活性物质A和活性物质C,作为正极活性物质的活性物质B中的至少一种。 活性物质A为LixCoO2(0.9 <= x <= 1.2)。 活性物质B为LixNiyMnzM1-y-zO2(0.9 <= x <=1.2,0.1≤y≤0.5,0.2≤z≤0.5,0.2≤1-yz≤0.5,0.9≤y/ z <= 2.5; M为选自Co,Mg,Al,Ti,Sr,Ca,V,Fe,Y,Zr,Mo,Tc,Ru,Ta,W和Re中的至少一种)。 活性物质C为LixCo1-aMaO2(0.9 <= x <= 1.2,0.005 <= a <= 0.1; M为选自Mg,Al,Ti,Sr,Mn,Ni,Ca ,V,Fe,Y,Zr,Mo,Tc,Ru,Ta,W,Re,Yb,Cu,Zn和Ba)。