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    • 3. 发明公开
    • COMPOSITE CATHODE MATERIALS HAVING IMPROVED CYCLE LIFE
    • 复合阴极材料具有改善的循环寿命
    • EP2973790A1
    • 2016-01-20
    • EP13877477.3
    • 2013-03-15
    • Ovonic Battery Company, Inc.
    • REICHMAN, BenjaminMAYS, WilliamWONG, Diana
    • H01M4/131H01M4/1391
    • H01M10/0525H01M4/131H01M4/1391H01M4/525
    • Lithiated composite materials and methods of manufacture are provided that are capable of imparting excellent capacity and greatly improved cycle life in lithium-ion secondary cells. By supplementing a high nickel content lithium storage material with a transition metal oxide lithium storage material or a dopant at relatively low levels, the capacity of the high nickel content lithium storage materials is maintained while cycle life is dramatically improved. These characteristics are promoted by methods of producing the materials that intermix unlithiated precursor materials with a lithium source and sintering the materials together in a single sintering reaction. The resulting lithiated composite materials provide for the first time both high capacity and excellent cycle life to predominantly high nickel content electrodes.
    • 提供锂化复合材料和制造方法,其能够赋予锂离子二次电池优异的容量并大大改善循环寿命。 通过用过渡金属氧化物锂储存材料或掺杂剂以相对较低的水平补充高镍含量锂储存材料,高镍含量锂储存材料的容量得以维持,同时循环寿命显着提高。 通过生产将未锂化的前体材料与锂源混合并在单一烧结反应中将材料一起烧结的材料的方法来促进这些特性。 所得到的锂化复合材料首次提供高容量和优异的循环寿命,以高镍含量电极为主。