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    • 1. 发明申请
    • CATHODE MIX CONTAINING HAVING IMPROVED EFFICIENCY AND ENERGY DENSITY OF ELECTRODE
    • 含有改善效率和电极密度的阴极混合物
    • US20100239909A1
    • 2010-09-23
    • US12709011
    • 2010-02-19
    • Sanghoon CHOYYong Tae LEEHong-Kyu PARKSoo Min PARKHyo-Shik KILCheol-Hee PARK
    • Sanghoon CHOYYong Tae LEEHong-Kyu PARKSoo Min PARKHyo-Shik KILCheol-Hee PARK
    • H01M4/52
    • H01M4/5825C01B25/37H01M4/136H01M10/052H01M2006/5094
    • Provided is a cathode mix for lithium secondary batteries, comprising a cathode active material having a composition represented by the following Formula I: LiFe(P1-XO4) (I) wherein a molar fraction (1-x) of phosphorus (P) is in the range of 0.910 to 0.999, to allow operational efficiency of the cathode active material to be leveled to a lower operational efficiency of an anode active material and improve energy density of the cathode active material.The cathode mix maximizes operational efficiency of batteries, minimizes electrode waste and thus reduces manufacturing costs of batteries. Furthermore, The cathode active material, wherein a molar fraction (1-x) of phosphorus (P) is lower than 1, according to the present invention contains both Fe2+ and Fe3+, thus advantageously causing no structural deformation, improving ionic conductivity, exhibiting superior rate properties, inhibiting IR drop upon charge/discharge, thereby imparting high energy density to batteries.
    • 提供一种用于锂二次电池的阴极混合物,其包含具有由下式I表示的组成的阴极活性材料:其中磷(P)的摩尔分数(1-x)在其中的LiFe(P1-XO4)(I) 范围为0.910至0.999,以使阴极活性材料的操作效率平衡至阳极活性材料的较低操作效率,并提高阴极活性材料的能量密度。 阴极混合物可最大限度地提高电池的运行效率,最大限度地减少电极浪费,从而降低电池的制造成本。 此外,根据本发明的磷(P)的摩尔分数(1-x)小于1的正极活性物质既含有Fe 2+和Fe 3+,因此有利地不引起结构变形,提高离子电导率,显示出优异的 速率特性,在充电/放电时抑制IR降低,从而赋予电池高的能量密度。