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    • 3. 发明申请
    • NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    • 非电解电解质二次电池
    • US20110195309A1
    • 2011-08-11
    • US13023951
    • 2011-02-09
    • Fumiharu NinaAkihiro SuzukiShingo TodeToshikazu YoshidaYoshinori KidaHiroyuki Fujimoto
    • Fumiharu NinaAkihiro SuzukiShingo TodeToshikazu YoshidaYoshinori KidaHiroyuki Fujimoto
    • H01M4/52H01M4/50
    • H01M10/0525H01M4/485H01M4/505H01M4/525Y02E60/122Y02T10/7011
    • A positive electrode active material of a nonaqueous electrolyte secondary battery is improved by using an inexpensive lithium transition metal oxide containing nickel and manganese as main components. Output characteristics of the battery under various temperature conditions are thereby improved, and the battery is suitable as a power supply of a hybrid vehicle. The battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a nonaqueous electrolyte prepared by dissolving a solute in a nonaqueous solvent. The positive electrode active material includes positive electrode active material particles composed of a lithium transition metal complex oxide having a layered structure containing nickel and manganese as main components, and at least one niobium-containing material selected from a Li—Nb—O compound and a Li—Ni—Nb—O compound, the at least one niobium-containing material being sintered onto surfaces of the positive electrode active material particles.
    • 通过使用廉价的含有镍和锰的锂过渡金属氧化物作为主要成分,提高了非水电解质二次电池的正极活性物质。 因此,在各种温度条件下的电池的输出特性得到改善,并且电池适合作为混合动力车辆的电源。 该电池包括正极,其包括正极活性物质,负极包括负极活性物质,以及通过将溶质溶解在非水溶剂中制备的非水电解质。 正极活性物质包括由具有镍和锰作为主要成分的层状结构的锂过渡金属复合氧化物构成的正极活性物质粒子,以及选自Li-Nb-O系化合物和 Li-Ni-Nb-O化合物,将至少一种含铌材料烧结在正极活性物质颗粒的表面上。
    • 8. 发明申请
    • NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    • 非电解电解质二次电池
    • US20130323606A1
    • 2013-12-05
    • US13985190
    • 2011-12-28
    • Toshikazu YoshidaFumiharu NiinaHiroshi KawadaYoshinori Kida
    • Toshikazu YoshidaFumiharu NiinaHiroshi KawadaYoshinori Kida
    • H01M4/505H01M4/525
    • H01M4/505H01M4/36H01M4/525H01M4/587H01M10/0525H01M10/0569Y02E60/122
    • The present invention is aimed at providing a nonaqueous electrolyte secondary battery capable of improving cycling characteristics by improving a positive electrode active material when particles with a structure in which primary particles are aggregated to front, secondary particles are used as the positive electrode active material of the nonaqueous electrolyte secondary battery, thereby permitting preferred use as a power supply of a hybrid electric car or the like. The positive electrode active material includes secondary particles 20 composed of aggregated primary particles 21, the primary particles 21 have an aspect ratio of 2.0 or more and 10.0 or less, and in powder X-ray diffraction measurement using CuKα ray, the positive electrode active material satisfies 0.10°≦FWHM110 ≦0.30° wherein FWHM110 represents a full width at half maximum of a 110 diffraction peak present within a range of diffraction angle 2θ of 64.5°±1.0°.
    • 本发明的目的在于提供一种能够提高循环特性的非水电解质二次电池,其中,当使用具有一次粒子聚集到前面的结构的粒子时,使用二次粒子作为正极活性物质 非水电解质二次电池,因此优选用作混合电动汽车等的电源。 正极活性物质包括由聚集的一次粒子21构成的二次粒子20,一次粒子21的纵横比为2.0以上且10.0以下,在使用CuKalpha射线的粉末X射线衍射测定中,正极活性物质 满足0.10°@FWHM110@ 0.30°,其中FWHM110表示在衍射角2θ为64.5°±1.0°的范围内存在的110个衍射峰的半峰全宽。