NICKEL COMPOSITE HYDROXIDE AND MANUFACTURING METHOD THEREOF, CATHODE ACTIVE MATERIAL FOR NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF, AND NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY
    5.
    发明申请
    NICKEL COMPOSITE HYDROXIDE AND MANUFACTURING METHOD THEREOF, CATHODE ACTIVE MATERIAL FOR NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF, AND NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY 审中-公开
    镍系复合氢氧化物及其制造方法,非电解电解质二次电池用阴极活性材料及其制造方法及非电解二次电池

    公开(公告)号:US20150364761A1

    公开(公告)日:2015-12-17

    申请号:US14124418

    申请日:2012-04-03

    摘要: Provided are a cathode active material having a suitable particle size and high uniformity, and a nickel composite hydroxide as a precursor of the cathode active material. When obtaining nickel composite hydroxide by a crystallization reaction, nucleation is performed by controlling a nucleation aqueous solution that includes a metal compound, which includes nickel, and an ammonium ion donor so that the pH value at a standard solution temperature of 25° C. becomes 12.0 to 14.0, after which, particles are grown by controlling a particle growth aqueous solution that includes the formed nuclei so that the pH value at a standard solution temperature of 25° C. becomes 10.5 to 12.0, and so that the pH value is lower than the pH value during nucleation. The crystallization reaction is performed in a non-oxidizing atmosphere at least in a range after the processing time exceeds at least 40% of the total time of the particle growth process from the start of the particle growth process where the oxygen concentration is 1 volume % or less, and with controlling an agitation power requirement per unit volume into a range of 0.5 kW/m3 to 4 kW/m3 at least during the nucleation process.

    摘要翻译: 提供具有合适的粒度和高均匀性的阴极活性材料和作为阴极活性材料的前体的镍复合氢氧化物。 当通过结晶反应获得镍复合氢氧化物时,通过控制包含镍的金属化合物和铵离子供体的成核水溶液进行成核,使得在25℃的标准溶液温度下的pH值变为 12.0〜14.0,然后通过控制包含所形成的核的颗粒生长水溶液生长颗粒,使得在25℃的标准溶液温度下的pH值变为10.5至12.0,并且使得pH值较低 比成核期间的pH值。 至少在处理时间超过从氧浓度为1体积%的粒子生长过程开始的粒子生长过程的总时间的至少40%以上的范围内,在非氧化性气氛中进行结晶反应, 至少在成核过程中,将每单位体积的搅拌功率要求控制在0.5kW / m3至4kW / m3的范围内。

    Lithium secondary battery and method for manufacturing the same
    10.
    发明授权
    Lithium secondary battery and method for manufacturing the same 有权
    锂二次电池及其制造方法

    公开(公告)号:US09413010B2

    公开(公告)日:2016-08-09

    申请号:US13636811

    申请日:2011-03-24

    摘要: Provided is a lithium secondary battery in which negative-electrode active material particles containing silicon and/or a silicon alloy are used and which prevents the occurrence of breakage of a binder itself and peel-off of the binder at the interfaces with the negative-electrode active material and the negative-electrode current collector and has a high energy density and an excellent cycle characteristic. The lithium secondary battery includes: a negative electrode in which a negative-electrode active material layer including negative-electrode active material particles containing silicon and/or a silicon alloy and a binder is formed on a surface of electrically conductive metal foil serving as a negative-electrode current collector; a positive electrode; and a nonaqueous electrolyte, wherein the binder contains a polyimide resin including a crosslinked structure formed by imidization of a hexavalent or higher-valent carboxylic acid or an anhydride thereof with a diamine.

    摘要翻译: 提供一种锂二次电池,其中使用含有硅和/或硅合金的负极活性物质颗粒,并且防止粘合剂本身的破裂发生和粘合剂在与负极的界面处的剥离 活性物质和负极集电体,具有高能量密度和优异的循环特性。 锂二次电池包括:在作为负极的导电性金属箔的表面上形成有负极活性物质层的负极,负极活性物质层包含含有硅和/或硅合金的负极活性物质粒子和粘合剂 电极集电器; 正极; 和非水电解质,其中所述粘合剂含有通过将六价或更高价羧酸或其酸酐与二胺酰亚胺化而形成的交联结构的聚酰亚胺树脂。