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    Method of increasing charge-discharge capacity of nonaqueous electrolyte secondary battery
    3.
    发明申请
    Method of increasing charge-discharge capacity of nonaqueous electrolyte secondary battery 审中-公开
    提高非水电解质二次电池充放电容量的方法

    公开(公告)号：US20090208846A1

    公开(公告)日：2009-08-20

    申请号：US12385710

    申请日：2009-04-16

    申请人： Yasufumi Takahashi ,  Hiroyuki Fujimoto ,  Akira Kinoshita ,  Toyoki Fujihara ,  Shingo Tode ,  Ikuro Nakane ,  Shin Fujitani

    发明人： Yasufumi Takahashi ,  Hiroyuki Fujimoto ,  Akira Kinoshita ,  Toyoki Fujihara ,  Shingo Tode ,  Ikuro Nakane ,  Shin Fujitani

    IPC分类号： H01M4/58

    CPC分类号： H01M4/131 ,  H01M4/133 ,  H01M4/525 ,  H01M10/0525

    摘要： Method of increasing charge-discharge capacity of a nonaqueous electrolyte secondary battery including a positive electrode containing a positive active material, a negative electrode containing a negative active material other than metallic lithium and a nonaqueous electrolyte. The battery is charged at an end-of-charge voltage of at least 4.3V. The positive active material includes lithium cobaltate in which Zr and Mg are contained by mixing their source materials in the preparation of the positive active material by a heat treatment, the Zr and Mg being contained in the lithium cobaltate in a total amount of not greater than 3 mole %, the Zr after heat treatment being present as particles of a Zr-containing compound that are sintered with particle surfaces of the lithium cobaltate, and the Zr being detected in the particles of the Zr-containing compound but not in the lithium cobaltate particles.

    摘要翻译： 提高包含正极活性物质的正极，含有金属锂以外的负极活性物质的负极和非水电解质的非水电解质二次电池的充放电容量的提高方法。 电池充电至少为4.3V的充电电压。 正极活性物质包括通过热处理将其原料混合在正极活性物质的制备中而含有Zr和Mg的钴酸锂，所述钴酸锂中所含的Zr和Mg的总量不大于 3摩尔％，热处理后的Zr作为与钴酸锂的粒子表面烧结的含Zr化合物的颗粒存在，Zr在含Zr化合物的颗粒中检测而不在钴酸锂中 粒子。

    NON-AQUEOUS ELECTROLYTE SECONDARY CELL AND METHOD OF MANUFACTURING THE SAME
    7.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY CELL AND METHOD OF MANUFACTURING THE SAME 有权
    非水溶性电解质二次电池及其制造方法

    公开(公告)号：US20140134492A1

    公开(公告)日：2014-05-15

    申请号：US14129436

    申请日：2012-06-25

    申请人： Shinichi Yamami ,  Shingo Tode ,  Toyoki Fujihara ,  Toshiyuki Nohma

    发明人： Shinichi Yamami ,  Shingo Tode ,  Toyoki Fujihara ,  Toshiyuki Nohma

    IPC分类号： H01M4/36 ,  H01M4/1393

    CPC分类号： H01M4/1393 ,  H01M4/133 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

    摘要： Disclosed is a non-aqueous electrolyte secondary cell excellent in capacity retention rate and I-V characteristics after repeated cycles. The secondary cell contains a negative electrode active material containing scaly graphite particles and coated graphite particles. The coated graphite particles contain graphite particles and a coating layer coating the surfaces of the graphite particles. The coating layer contains amorphous carbon particles and an amorphous carbon layer. It is preferable that the negative electrode active material contain 1 to 6% by mass of the scaly graphite particles and that the graphite particles, the amorphous carbon particles, and the amorphous carbon layer be in a mass ratio of 100:α:β where 1≦α≦10, 1≦β≦10, and α≦1.34β.

    摘要翻译： 公开了重复循环后的容量保持率和I-V特性优异的非水电解质二次电池。 二次电池含有含有鳞片状石墨粒子和被覆石墨粒子的负极活性物质。 涂覆的石墨颗粒包含石墨颗粒和涂覆石墨颗粒表面的涂层。 涂层含有无定形碳颗粒和无定形碳层。 优选负极活性物质含有1〜6质量％的鳞片状石墨粒子，石墨粒子，无定形碳粒子和无定形碳层的质量比为100:α:＆lt; bgr; 其中1＆nlE;α＆nlE; 10,1＆nlE;＆bgr;＆nlE; 10和α＆nlE; 1.34＆bgr。