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    • 5. 发明申请
    • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    • 非水电解质二次电池
    • US20080193840A1
    • 2008-08-14
    • US12030528
    • 2008-02-13
    • Takayuki ShiraneKaoru InoueMasaya UgajiMasato FujikawaToshitada Sato
    • Takayuki ShiraneKaoru InoueMasaya UgajiMasato FujikawaToshitada Sato
    • H01M4/02
    • H01M10/0525H01M4/13H01M4/131H01M4/485H01M2004/027H01M2300/004
    • A non-aqueous electrolyte secondary battery comprising at least a negative electrode having a current collector provided thereon with convex portions and columnar bodies formed on the convex portions, each of the columnar bodies comprising n stages (where n≧2) of overlaid columnar body portions alternately tilted to different orientations along a longitudinal direction of the current collector, a positive electrode having a positive electrode current collector provided on both surfaces thereof with a positive electrode mixture layer containing a positive electrode active material capable of inserting and extracting lithium ions reversibly, and a separator interposed between the positive electrode and the negative electrode in a confronting manner, wherein tip portions of the columnar body portions at the uppermost stage of the columnar bodies on the negative electrode are tilted toward a trailing end of winding direction.
    • 本发明提供一种非水电解质二次电池,其至少包括具有设置在所述凸部上的集电体的集电体的负极和在所述凸部上形成的柱状体,所述柱状体包括重叠柱状体的n个阶段(n> = 2) 沿着集电体的长度方向交替地倾斜到不同取向的部分,具有正极集电体的正极具有正极集电体,该正极集电体在其两面设置有含有能够可逆地插入和提取锂离子的正极活性物质的正极合剂层, 以及相对于正极和负极之间插入的隔膜,其中负极上柱状体的最上段的柱状体部的末端部向卷绕方向的后端倾斜。
    • 10. 发明授权
    • Non-aqueous electrolyte secondary battery with high capacity and good life characteristics
    • 非水电解质二次电池具有容量大,寿命长的特点
    • US08435675B2
    • 2013-05-07
    • US11795801
    • 2006-03-23
    • Takayuki ShiraneTakashi TakeuchiTakaya Saito
    • Takayuki ShiraneTakashi TakeuchiTakaya Saito
    • H01M4/13
    • H01M4/131H01M4/485H01M4/525H01M4/587H01M4/62H01M10/0525H01M10/4235H01M2010/4292
    • Disclosed is a non-aqueous electrolyte secondary battery comprising a positive electrode containing a nickel-containing lithium composite oxide, a negative electrode containing graphite, and a non-aqueous electrolyte. The cut-off voltage of charge of this non-aqueous electrolyte secondary battery is 4.25 to 4.6 V. The negative electrode contains an additive that reacts with lithium at a potential higher than the potential of graphite. The ratio A/B of a positive electrode capacity A based on the weight of the nickel-containing lithium composite oxide and the cut-off voltage of charge relative to a weight B of the graphite contained in a portion of a negative electrode material mixture layer opposing to a positive electrode material mixture layer is 300 to 340 mAh/g, and the irreversible capacity C of the positive electrode and the irreversible capacity D of the negative electrode in the portion opposing to the positive electrode satisfies C≧D.
    • 公开了一种非水电解质二次电池,其包含含有镍的锂复合氧化物的正极,含有石墨的负极和非水电解质。 该非水电解质二次电池的电荷截止电压为4.25〜4.6V。负极含有与石墨的电位高的电位与锂反应的添加剂。 基于含镍锂复合氧化物的重量的正极容量A的比A / B和电荷相对于负极材料混合层的一部分中所含的石墨的重量B的截止电压 与正极合剂层相对的面积为300〜340mAh / g,正极的不可逆容量C和负极的与正极相反的部分的不可逆容量D满足C> = D。