利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

31 条记录 (耗时 0.037 秒)

    Positive active material and rechargeable lithium battery comprising same
    7.
    发明申请
    Positive active material and rechargeable lithium battery comprising same 审中-公开
    正极活性物质和包含其的可再充电锂电池

    公开(公告)号：US20100151331A1

    公开(公告)日：2010-06-17

    申请号：US12316678

    申请日：2008-12-16

    申请人： Yang-Kook Sun ,  Byung-Chun Park ,  Hyung-Bae Kim

    发明人： Yang-Kook Sun ,  Byung-Chun Park ,  Hyung-Bae Kim

    IPC分类号： H01M4/58

    CPC分类号： H01M4/485 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525

    摘要： The present invention relates to a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive active material includes an active compound that can intercalate/deintercalate lithium ions, and a bismuth (Bi)-based compound on the surface of the active compound. The bismuth (Bi)-based compound in the positive active material of the present invention decreases resistance against acid generated around a positive active material, and plays a role of suppressing structural change of the positive active material and its reaction with an electrolyte solution and preventing dissolution of transition elements therein. Accordingly, the positive active material of the present invention can improve storage and cycle life characteristics at a high temperature. In addition, it can increase charge and discharge, cycle life, and rate characteristics of a rechargeable lithium battery as well as improve mobility of lithium ions in the electrolyte solution.

    摘要翻译： 本发明涉及一种用于可再充电锂电池的正极活性材料和包括其的可再充电锂电池。 正极活性物质包括可以在活性化合物的表面上插入/脱嵌锂离子的活性化合物和铋（Bi）基化合物。 本发明的正极活性物质中的铋（Bi）系化合物降低了对正极活性物质周围产生的酸的耐受性，起到抑制正极活性物质的结构变化及其与电解液反应的作用， 过渡元素在其中的溶解。 因此，本发明的正极活性物质可以在高温下改善储存和循环寿命特性。 此外，它可以增加可再充电锂电池的充放电，循环寿命和速率特性，以及提高电解液中锂离子的迁移率。

    Electrode active materials for lithium secondary batteries, method for preparing the same, and lithium secondary batteries using the same
    8.
    发明授权
    Electrode active materials for lithium secondary batteries, method for preparing the same, and lithium secondary batteries using the same 失效
    锂二次电池用电极活性物质及其制备方法以及使用其的锂二次电池

    公开(公告)号：US07674557B2

    公开(公告)日：2010-03-09

    申请号：US10492757

    申请日：2002-09-19

    申请人： Yang-Kook Sun ,  Ho-Hyuk Lee

    发明人： Yang-Kook Sun ,  Ho-Hyuk Lee

    IPC分类号： H01M4/48

    CPC分类号： H01M4/131 ,  H01M4/505 ,  H01M4/58 ,  H01M4/582 ,  H01M10/0525

    摘要： An electrode active material further comprising an amphoteric compound, an alkali metal sulfide or an alkali metal oxide, and lithium secondary batteries using the electrode active material, are disclosed. The lithium secondary batteries neutralize acids generating around electrode active material so that it can inhibit the reduction in battery capacity. In addition, the lithium secondary batteries are excellent in its charge-discharge characteristics, cycle life and thermal stability. A method for preparing the electrode active material for lithium secondary batteries is also provided.

    摘要翻译： 公开了还包含两性化合物，碱金属硫化物或碱金属氧化物的电极活性材料和使用该电极活性材料的锂二次电池。 锂二次电池中和在电极活性物质周围产生的酸，从而可以抑制电池容量的降低。 此外，锂二次电池的充放电特性，循环寿命和热稳定性优异。 还提供了制备用于锂二次电池的电极活性材料的方法。