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    • 32. 发明授权
    • Electrode for lithium-ion secondary battery
    • 锂离子二次电池用电极
    • US08822074B2
    • 2014-09-02
    • US13138495
    • 2010-02-26
    • Yasuhiro WakizakaTakumi Sugimoto
    • Yasuhiro WakizakaTakumi Sugimoto
    • H01M4/62H01M4/13H01M4/64H01M10/052
    • H01M4/13H01M2/166H01M4/62H01M4/621H01M4/622H01M4/64H01M10/052Y02E60/122
    • Disclosed is an electrode for a lithium-ion secondary battery which includes a porous membrane layer that is inhibited from decreasing in flexibility. The electrode for lithium-ion secondary battery comprises a current collector and, formed thereon in the following order, an electrode active-material layer comprising an electrode active material, a thickener, and a binder and a porous membrane layer containing an inorganic filler, wherein the binder is one which, when used to form a composite film comprising the binder and the thickener, forms a spherical island phase in a cross section of the composite film, the island phase having an average diameter of 0.5 μm or larger. The binder preferably is an unsaturated carboxylic acid ester polymer having a content of alkyl acrylate monomer units of 85 mass % or higher.
    • 公开了一种用于锂离子二次电池的电极,其包括被抑制柔性降低的多孔膜层。 锂离子二次电池用电极包括集电体,并且依次形成包含电极活性物质,增稠剂和粘合剂的电极活性物质层和含有无机填料的多孔膜层,其中, 粘合剂是当用于形成包含粘合剂和增稠剂的复合膜时,在复合膜的横截面中形成球形岛相,其中岛相的平均直径为0.5μm以上。 粘合剂优选为具有85质量%以上丙烯酸烷基酯单体单元含量的不饱和羧酸酯聚合物。
    • 34. 发明申请
    • POROUS MEMBRANE FOR SECONDARY BATTERY AND SECONDARY BATTERY
    • 用于二次电池和二次电池的多孔膜
    • US20120189897A1
    • 2012-07-26
    • US13498993
    • 2010-09-30
    • Yasuhiro WakizakaNaoki Yoshida
    • Yasuhiro WakizakaNaoki Yoshida
    • H01M2/16H01M4/64B05D3/00H01M4/02C09D133/08B05D5/00
    • H01M2/1653H01M2/145H01M10/052
    • Disclosed is a porous membrane for a secondary battery, which has further improved output characteristics and long-term cycle characteristics when compared with conventional porous membranes. The porous membrane for a secondary battery is used for a lithium ion secondary battery or the like. Specifically disclosed is a porous membrane for a secondary battery, which contains polymer particles A that have a number average particle diameter of 0.4 μm or more but less than 10 μm and a glass transition temperature of 65° C. or more and polymer particles B that have a number average particle diameter of 0.04 μm or more but less than 0.3 μm and a glass transition temperature of 15° C. or less. It is preferable that the polymer particles B have a crystallization degree of 40% or less and a main chain structure that is composed of a saturated structure.
    • 公开了一种用于二次电池的多孔膜,与常规多孔膜相比,其具有进一步改善的输出特性和长期循环特性。 用于二次电池的多孔膜用于锂离子二次电池等。 具体公开了一种二次电池用多孔膜,其含有数均粒径为0.4μm以上且小于10μm的聚合物粒子A,玻璃化转变温度为65℃以上,聚合物粒子B为 数均粒径为0.04μm以上且小于0.3μm,玻璃化转变温度为15℃以下。 优选聚合物粒子B的结晶度为40%以下,主链结构由饱和结构构成。
    • 35. 发明申请
    • BINDER COMPOSITION FOR SECONDARY BATTERY ELECTRODE AND METHOD FOR PRODUCING SAME
    • 用于二次电池电极的焊接组合物及其制造方法
    • US20110171526A1
    • 2011-07-14
    • US13119681
    • 2009-09-17
    • Yasuhiro WakizakaYosuke Yabuuchi
    • Yasuhiro WakizakaYosuke Yabuuchi
    • H01M4/64H01M4/62C08L55/02
    • H01M4/621H01M4/04H01M4/139H01M10/052
    • A binder composition for secondary batteries having excellent stability over time is produced. A method for producing a binder composition for secondary batteries containing at least a polymer and a dispersion medium, which comprises a metal particulate removal step wherein metal particulates contained in a polymer dispersion containing a polymer and a dispersion medium are removed. A binder composition for secondary batteries, which is obtained by the above-mentioned production method and has a metal particulate content of not more than 10 ppm, said metal particulate content is composed of particles formed from a transition metal component and having a particle diameter of not less than 20 μm. A slurry for secondary battery electrodes, which contains the binder composition for secondary batteries and an electrode active material. A secondary battery electrode wherein an electrode active material layer containing the binder composition for secondary batteries and a positive electrode active material or a negative electrode active material is adhered to a collector. A secondary battery comprising the secondary battery electrode.
    • 生产具有优异的时间稳定性的二次电池用粘合剂组合物。 一种包含至少含有聚合物和分散介质的二次电池用粘合剂组合物的方法,其包括金属颗粒除去步骤,其中除去含有聚合物和分散介质的聚合物分散体中所含的金属微粒。 一种用于二次电池的粘合剂组合物,其通过上述制备方法获得并且具有不大于10ppm的金属颗粒含量,所述金属颗粒含量由过渡金属组分形成的颗粒由粒径为 不小于20μm。 二次电池电极用浆料,其含有二次电池用粘合剂组合物和电极活性物质。 二次电池电极,其中含有二次电池用粘合剂组合物的电极活性物质层和正极活性物质或负极活性物质附着在集电体上。 一种二次电池,包括二次电池电极。