CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY
    22.
    发明申请
    CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY 审中-公开
    用于锂二次电池的阴极活性材料

    公开(公告)号:US20110168944A1

    公开(公告)日:2011-07-14

    申请号:US12667357

    申请日:2008-10-08

    IPC分类号: H01M4/505

    摘要: Provided is a cathode active material for a lithium secondary battery, including a lithium-transition metal composite oxide represented by the following formula (1), which contains an excess of lithium, so as to exhibit enhanced rate characteristics under high rate charge/discharge conditions: Lii+aNi′bNi″cMndCoeO2 (1) wherein each of a, b, c, d and e has the same meaning as defined in the disclosure. The cathode active material according to the present invention includes an excess of lithium and, different from conventional technologies, a lithium-transition metal composite oxide containing a nickel element with a predetermined oxidation number, so that the active material exhibits a stable crystal structure and excellent rate characteristics under high rate charge/discharge conditions.

    摘要翻译: 本发明提供一种锂二次电池用正极活性物质,其包含由下述式(1)表示的锂过渡金属复合氧化物,其含有过量的锂,以便在高速率充放电条件下表现出增强的速率特性 :Lii + aNi'bNi“cMndCoeO2(1)其中a,b,c,d和e各自具有与本公开中所定义相同的含义。 根据本发明的正极活性物质包含过量的锂,并且与常规技术不同,含有具有预定氧化数的镍元素的锂 - 过渡金属复合氧化物,使得活性材料表现出稳定的晶体结构和优异的 高速率充​​放电条件下的速率特性。