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8 条记录 (耗时 0.022 秒)

    Non-aqueous electrolyte secondary battery
    1.
    发明申请
    Non-aqueous electrolyte secondary battery 审中-公开
    非水电解质二次电池

    公开(公告)号：US20090061311A1

    公开(公告)日：2009-03-05

    申请号：US11887144

    申请日：2006-02-03

    申请人： Masaharu Itaya ,  Atsushi Fukui ,  Shouichirou Sawa ,  Yasuyuki Kusumoto ,  Masahisa Fujimoto

    发明人： Masaharu Itaya ,  Atsushi Fukui ,  Shouichirou Sawa ,  Yasuyuki Kusumoto ,  Masahisa Fujimoto

    IPC分类号： H01M4/62 ,  H01M6/04

    CPC分类号： H01M4/62 ,  H01M4/134 ,  H01M4/386 ,  H01M10/052 ,  H01M10/44 ,  H01M2004/021

    摘要： An object of the invention is to provide a non-aqueous electrolyte secondary battery that allows a good charge/discharge cycle characteristic to be obtained. The non-aqueous electrolyte secondary battery according to the invention includes a negative electrode containing silicon as a negative electrode active material, a positive electrode, and a non-aqueous electrolyte, the average particle size of the negative electrode active material is not less than 5 μm nor more than 20 μm, and the weight of the negative electrode active material is at least 10% of the weight of the non-aqueous electrolyte.

    摘要翻译： 本发明的目的是提供一种能够获得充分/放电循环特性良好的非水电解质二次电池。 根据本发明的非水电解质二次电池包括含有硅作为负极活性物质的负极，正极和非水电解质，负极活性物质的平均粒径不小于5 妈妈也不超过20个，负极活性物质的重量为非水电解质重量的至少10重量％。

    Lithium secondary battery
    3.
    发明申请
    Lithium secondary battery 审中-公开
    锂二次电池

    公开(公告)号：US20070202365A1

    公开(公告)日：2007-08-30

    申请号：US11709252

    申请日：2007-02-22

    申请人： Shouichirou Sawa ,  Kazuyuki Satou ,  Atsushi Fukui ,  Yasuyuki Kusumoto ,  Maruo Kamino

    发明人： Shouichirou Sawa ,  Kazuyuki Satou ,  Atsushi Fukui ,  Yasuyuki Kusumoto ,  Maruo Kamino

    IPC分类号： H01M14/00 ,  H01M4/58 ,  H01M4/62

    CPC分类号： H01M4/134 ,  H01M4/622 ,  H01M4/661 ,  H01M2004/021 ,  H01M2010/4292

    摘要： In a lithium secondary battery using negative electrode active material particles containing silicon, excellent charge-discharge characteristics are achieved and swelling of the negative electrode is minimized. A lithium secondary battery has a positive electrode containing a positive electrode active material, a negative electrode containing an active material layer and a current collector made of a conductive metal foil, and a non-aqueous electrolyte. The active material layer has a binder and active material particles containing silicon, and is formed by sintering the active material layer on a current collector surface in a non-oxidizing atmosphere. The active material particles have an average particle size of from 7.5-15 μm and a particle size distribution such that 60 volume % or more of the active material particles falls within the ±40% range of the average particle size, and the lithium secondary battery has a negative/positive electrode capacity ratio of 1.7 or greater.

    摘要翻译： 在使用含有硅的负极活性物质粒子的锂二次电池中，实现了优异的充放电特性，并使负极的膨胀最小化。 锂二次电池具有包含正极活性物质的正极，含有活性物质层的负极和由导电性金属箔构成的集电体和非水电解质。 活性物质层具有粘合剂和含有硅的活性物质颗粒，并且通过在非氧化性气氛中在集电体表面上烧结活性物质层而形成。 活性物质粒子的平均粒径为7.5〜15μm，粒径分布为60体积％以上的活性物质粒子落入平均粒径的±40％范围内，锂二次电池 负极/正极容量比为1.7以上。