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    Negative electrode for secondary cell, negative plate for secondary cell, and secondary cell comprising the same
    2.
    发明授权
    Negative electrode for secondary cell, negative plate for secondary cell, and secondary cell comprising the same 失效
    二次电池用负极，二次电池用负极板，二次电池用二次电池

    公开(公告)号：US06555268B1

    公开(公告)日：2003-04-29

    申请号：US09485335

    申请日：2000-05-10

    Applicant: Kaoru Inoue ,  Shusaku Goto ,  Yui Takahashi ,  Toyoji Sugimoto

    Inventor： Kaoru Inoue ,  Shusaku Goto ,  Yui Takahashi ,  Toyoji Sugimoto

    IPC: H01M462

    CPC classification number: H01M4/621 ,  H01M4/133 ,  H01M4/587 ,  H01M4/622 ,  H01M10/0525

    Abstract: A binder made of a mixture of a first binder component including styrene butadiene copolymer containing styrene at between 20% and 70%, and a second binder component selected from at least one of styrene butadiene copolymer containing styrene at between 80% and 100% and polystyrene is used for the negative electrode of rechargeable batteries comprising a carbon material and the binder. The use of the negative electrode comprising the carbon material and binder results in good resistance to peeling of a coated film, and thus ease of handling of a negative electrode sheet. Consequently, rechargeable batteries with good low-temperature discharge characteristics are supplied at good yield.

    Abstract translation: 由含有20％至70％的苯乙烯的苯乙烯丁二烯共聚物的第一粘合剂组分和选自至少一种含有80％至100％的苯乙烯的苯乙烯丁二烯共聚物和第二粘合剂组分的混合物制成的粘合剂和聚苯乙烯 用于包含碳材料和粘合剂的可再充电电池的负极。 通过使用由碳材料和粘合剂构成的负极，能够很好地抵抗涂膜的剥离，容易处理负极片。 因此，以良好的收率提供具有良好低温放电特性的可充电电池。

    Nonaqueous electrolyte secondary battery and method for manufacturing negative electrode of the same
    4.
    发明授权
    Nonaqueous electrolyte secondary battery and method for manufacturing negative electrode of the same 有权
    非水电解质二次电池及其负极的制造方法

    公开(公告)号：US06455199B1

    公开(公告)日：2002-09-24

    申请号：US09214825

    申请日：1999-02-22

    Applicant: Masaki Kitagawa ,  Yoshihiro Kashihara ,  Hizuru Koshina ,  Toyoji Sugimoto ,  Kunio Tsuruta ,  Shuji Ito ,  Hajime Nishino ,  Kojiro Ishikawa ,  Hisanori Sugimoto ,  Kaoru Tsukamoto

    Inventor： Masaki Kitagawa ,  Yoshihiro Kashihara ,  Hizuru Koshina ,  Toyoji Sugimoto ,  Kunio Tsuruta ,  Shuji Ito ,  Hajime Nishino ,  Kojiro Ishikawa ,  Hisanori Sugimoto ,  Kaoru Tsukamoto

    IPC: C01B3104

    CPC classification number: H01M4/587 ,  H01M4/133 ,  H01M10/0525 ,  H01M2004/021 ,  Y10T29/49108

    Abstract: Graphite powder for a negative electrode in prior arts, which allows lithium ions to repeat intercalation and deintercalation reversibly by charge and discharge, has failed to attain a specific capacity close to the theoretical capacity of 372 mAh per 1 g. Also, there was a problem in storage property at a high temperature when it is attempted to improve the high rate charge and discharge characteristics. An object of the present invention is to solve these problems. In the process of pulverizing flaky graphite particles of which plane interval (d002) of (002) plane is 3.350 to 3.360 angstroms, and crystallite size (Lc) in the C-axis direction is at least 1000 angstroms or more, the graphite particles are chamfered into disk- or tablet-like form, which are then sifted, so as to obtain a graphite powder, of which mean particle size is defined within the range of 10 to 30 microns, mean thickness of thinnest portion is defined to be 3 to 9 microns, and X-ray diffraction peak intensity ratio of (110)/(004) by a wide angle X-ray diffraction method is defined to be 0.015 or more. By using this powder, the conventional problems are solved in a favorable balance, and, while achieving high energy density, the high rate discharge performance and reliability when left at a high temperature can be enhanced.

    Abstract translation: 现有技术中的允许锂离子通过充电和放电可逆地重复嵌入和脱嵌的现有技术的石墨粉未能达到接近每1g的372mAh的理论容量的比容量。 此外，当尝试提高高速率充放电特性时，在高温下的储存特性存在问题。 本发明的目的是解决这些问题。 在（002）面的平面间隔（d002）为3.350〜3.360埃的片状石墨粒子粉碎的过程中，C轴方向的微晶尺寸（Lc）为1000以上，石墨粒子为 倒角成片状或片状，然后将其筛分，以获得石墨粉末，其平均粒度定义在10至30微米的范围内，最薄部分的平均厚度定义为3至 通过广角X射线衍射法将（110）/（004）的X射线衍射峰强度比定义为0.015以上。 通过使用这种粉末，常规问题得到平衡的解决，并且在实现高能量密度的同时，可以提高高放电性能和高温时的可靠性。

    Non-aqueous electrolyte secondary cell, negative electrode therefor, and method of producing negative electrode
    5.
    发明授权
    Non-aqueous electrolyte secondary cell, negative electrode therefor, and method of producing negative electrode 失效
    非水电解质二次电池，其负极及负极的制造方法

    公开(公告)号：US06436573B1

    公开(公告)日：2002-08-20

    申请号：US09367523

    申请日：1999-08-16

    Applicant: Shusaku Goto ,  Kaoru Inoue ,  Yui Takahashi ,  Toyoji Sugimoto

    Inventor： Shusaku Goto ,  Kaoru Inoue ,  Yui Takahashi ,  Toyoji Sugimoto

    IPC: H01M462

    CPC classification number: H01M4/0483 ,  H01M4/0404 ,  H01M4/0416 ,  H01M4/043 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/602 ,  H01M4/621 ,  H01M4/622 ,  H01M6/10 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027

    Abstract: Graphite material capable of absorbing and desorbing lithium is employed as the negative electrode material of a non-aqueous electrolyte secondary battery, the negative electrode material being bound by at least one type of material selected from the group consisting of polyethylene, ethylene-vinyl acetate copolymer, ethylene-propylene copolymer, ethylene-propylene-vinyl acetate copolymer, and polypropylene. A non-aqueous electrolyte secondary battery with a high anti-peeling strength of the electrode mix, superiority in the ease of handling, a high reliability in mass production, a superior low-temperature discharge characteristic and cycle characteristic is provided by employing the negative electrode in combination with a rechargeable positive electrode and a non-aqueous liquid electrolyte.

    Abstract translation: 作为非水电解质二次电池的负极材料，使用能够吸收和解吸锂的石墨材料，所述负极材料由至少一种选自聚乙烯，乙烯 - 乙酸乙烯酯共聚物 ，乙烯 - 丙烯共聚物，乙烯 - 丙烯 - 乙酸乙烯酯共聚物和聚丙烯。 通过使用负极，提供电极混合物的抗剥离强度高的非水电解质二次电池，便于操作的优点，大规模生产的高可靠性，优异的低温放电特性和循环特性 与可再充电正电极和非水电解液组合。

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