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    • 31. 发明授权
    • Process for production of cathode active material for lithiun ion secondary battery
    • 锂离子二次电池用正极活性物质的制造方法
    • US08192711B2
    • 2012-06-05
    • US12606224
    • 2009-10-27
    • Megumi UchidaTakeshi KawasatoRemi Hiraki
    • Megumi UchidaTakeshi KawasatoRemi Hiraki
    • C01G51/00
    • H01M4/505H01M4/1315H01M4/362H01M4/485H01M4/525H01M10/052Y10T428/2991Y10T428/2993
    • To provide a process for producing a surface modified lithium-containing composite oxide, which is excellent in discharge capacity, volume capacity density, safety, durability for charge and discharge cycles and an excellent rate property, at a low production cost.The present invention is characterized in that a process for producing a surface modified lithium-containing composite oxide, wherein a lithium titanium composite oxide is contained in the surface layer of particles of a lithium-containing composite oxide represented by the formula: LipNxMyOzFa, where N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9≦p≦1.3, 0.9≦x≦2.0, 0≦y≦0.1, 1.9≦z≦4.2, and 0≦a≦0.05, which comprises impregnating a solution having a lithium source and a titanium source dissolved therein, followed by heat treatment at a determined temperature, to obtain the surface modified lithium-containing composite oxide, wherein the titanium contained in the surface layer is from 0.01 to 1.95 mol %.
    • 为了提供一种生产成本低的放电容量,容量容量密度,安全性,充放电循环的耐久性和优异的速率特性的表面改性的含锂复合氧化物的方法。 本发明的特征在于一种表面改性的含锂复合氧化物的制造方法,其中,在下式表示的锂复合氧化物的表面层中含有锂钛复合氧化物,式中,N表示下式:LipNxMyOzFa,其中N 是选自Co,Mn和Ni中的至少一种元素,M是选自Al,Sn,碱土金属元素和Co,Mn和Ni以外的过渡金属元素中的至少一种元素,0.9 其中包括浸渍溶解有锂源和钛源的溶液,其中包括溶解在其中的锂源和溶解有钛源的溶液,随后 通过在确定的温度下进行热处理,得到表面改性的含锂复合氧化物,其中表面层中所含的钛为0.01〜1.95摩尔%。
    • 40. 发明申请
    • LITHIUM-CONTAINING COMPOSITE OXIDE AND ITS PRODUCTION METHOD
    • 含锂的复合氧化物及其生产方法
    • US20090258296A1
    • 2009-10-15
    • US12486799
    • 2009-06-18
    • Takeshi KawasatoTakuya MiharaKoichiro UedaYukimitsu WakasugiNozomi Honda
    • Takeshi KawasatoTakuya MiharaKoichiro UedaYukimitsu WakasugiNozomi Honda
    • H01M4/32H01M4/52
    • H01M4/36C01G45/1228C01G51/50C01G53/50C01P2002/52C01P2004/32C01P2004/51C01P2004/53C01P2004/61C01P2006/11C01P2006/12C01P2006/40H01M4/02H01M4/131H01M4/485H01M4/505H01M4/525H01M10/052H01M2004/021
    • To provide a lithium/nickel/cobalt/manganese-containing composite oxide powder which has a high weight capacity density, a high packing property, an excellent cycle property, an excellent discharge rate property and an excellent safety, and which has little content of free alkalis and is free from gelation at a time of producing a slurry.A lithium/nickel/cobalt/manganese-containing composite oxide powder represented by the formula LipNixCoyMnzMqO2-aFa (wherein M is at least one element selected from the group consisting of Al, Ge, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9≦p≦1.1, 0.2≦x≦0.5, 0.2≦y≦0.5, 0.1≦z≦0.4, 0≦q≦0.05, 1.9≦2-a≦2.1, p+x+y+z+q=2, and 0≦a≦0.02), characterized in that when the powder is classified into small particle size-classified particles with an average particle size of 2 μm≦D50≦8 μm and large particle size-classified particles with an average particle size of 10 μm≦D50≦25 μm, the ratio of (% by weight of the small particle size-classified particles)/(% by weight of the large particle size-classified particles) is from 15/85 to 40/60, the molar ratio (ps) of lithium to the total of nickel, cobalt, manganese and the M element contained in the small particle size-classified particles is smaller than the molar ratio (pl) of lithium to the total of nickel, cobalt, manganese and the M element contained in the large particle size-classified particles.
    • 为了提供具有高重量容量密度,高包装性,优异的循环性能,优异的排出速率特性和优异的安全性的锂/镍/钴/锰复合氧化物粉末,并且几乎没有游离的含量 碱,并且在制备浆料时不凝胶化。 由式LipNixCoyMnzMqO2-aFa(其中M为选自Al,Ge,Sn,碱土金属元素和过渡金属元素中的至少一种元素的锂/镍/钴/锰复合氧化物粉末) Co,Mn和Ni,0.9 <= p <= 1.1,0.2 <= x <= 0.5,0.2 <= y <= 0.5,0.1 <= z <= 0.4,0 <= q <= 0.05,1.9 <= 2 -a <= 2.1,p + x + y + z + q = 2,0 <= a <= 0.02),其特征在于,当粉末分为平均粒度为2的小颗粒尺寸分类颗粒 mum <= D50 <=8μm,平均粒径为10μm