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    Lithium secondary battery
    7.
    发明授权
    Lithium secondary battery 有权
    锂二次电池

    公开(公告)号：US09263729B2

    公开(公告)日：2016-02-16

    申请号：US13522758

    申请日：2010-01-21

    申请人： Hiroki Nagai ,  Masahiro Morita ,  Yukihiro Okada

    发明人： Hiroki Nagai ,  Masahiro Morita ,  Yukihiro Okada

    IPC分类号： H01M4/13 ,  H01M4/131 ,  H01M4/62 ,  H01M10/052 ,  H01M4/02

    CPC分类号： H01M4/13 ,  H01M4/131 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49108

    摘要： A lithium secondary battery of the present invention has a positive electrode is provided with a positive electrode mix layer that includes a positive electrode active material and a conductive material. The positive electrode mix layer has two peaks, large and small, of differential pore volume over a pore size ranging from 0.01 μm to 10 μm in a pore distribution curve measured by a mercury porosimeter. A pore size of the smaller peak B of the differential pore volume is smaller than a pore size of the larger peak A of the differential pore volume.

    摘要翻译： 本发明的锂二次电池具有正极，其具有包括正极活性物质和导电性材料的正极混合层。 在通过水银孔率计测量的孔分布曲线中，正电极混合层在0.01μm至10μm的孔径范围内具有大的和小的不同孔体积的峰。 不同孔体积的较小峰B的孔径小于微孔体积的较大峰A的孔径。

    Secondary battery
    8.
    发明授权
    Secondary battery 有权
    二次电池

    公开(公告)号：US09209459B2

    公开(公告)日：2015-12-08

    申请号：US13879042

    申请日：2010-10-15

    申请人： Hiroki Nagai ,  Masahiro Morita ,  Takashi Iwao

    发明人： Hiroki Nagai ,  Masahiro Morita ,  Takashi Iwao

    IPC分类号： H01M4/485 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525

    CPC分类号： H01M4/485 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  Y02E60/122

    摘要： A secondary battery 100 includes a positive electrode current collector 221 and a positive electrode mixture layer 223 which is coated over the positive electrode current collector 221. The positive electrode mixture layer 223 includes a positive electrode active material 610, an electrically conductive material 620, and a binder 630. In addition, the positive electrode active material 610 has secondary particles 910 formed by an aggregation of a plurality of primary particles of a lithium transition metal oxide, a hollow portion 920 formed in the secondary particle 910, and through holes 930 penetrating the secondary particles 910 so as to connect the hollow portion 920 and the outside. A ratio (Vbc/Va) of an inner volume Vbc of holes formed inside the positive electrode mixture layer 223 to an apparent volume Va of the positive electrode mixture layer 223 satisfies 0.25≦(Vbc/Va). In addition, in a section of the positive electrode mixture layer 223, a ratio (Vb/Vc) of an inner volume Vb of holes B formed inside the positive electrode active material 610 to an inner volume Vc of holes C formed outside the positive electrode active material 610 satisfies 0.05≦(Vb/Vc)≦2.5.

    摘要翻译： 二次电池100包括正极集电体221和涂覆在正极集电体221上的正极合剂层223.正极合剂层223包括正极活性物质610，导电材料620和 粘合剂630.另外，正极活性物质610具有通过多次锂过渡金属氧化物的一次粒子，形成在二次粒子910中的中空部920的聚集而形成的二次粒子910和穿透 二次粒子910，以便连接中空部分920和外部。 正极合剂层223内形成的孔的内部体积Vbc与正极合剂层223的表观体积Va的比（Vbc / Va）满足0.25＆lt; nlE;（Vbc / Va）。 另外，在正极合剂层223的截面中，形成在正极活性物质610内的孔B的内部容积Vb与形成在正极外侧的孔C的内部容积Vc的比（Vb / Vc） 活性物质610满足0.05＆nlE;（Vb / Vc）＆nlE; 2.5。

    SECONDARY BATTERY
    9.
    发明申请
    SECONDARY BATTERY 有权
    二次电池

    公开(公告)号：US20130288121A1

    公开(公告)日：2013-10-31

    申请号：US13884645

    申请日：2010-11-12

    申请人： Hiroki Nagai ,  Masahiro Morita ,  Takashi Iwao

    发明人： Hiroki Nagai ,  Masahiro Morita ,  Takashi Iwao

    IPC分类号： H01M4/485

    CPC分类号： H01M4/485 ,  H01M4/13 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0587 ,  H01M2004/021 ,  Y02E60/122 ,  Y02T10/7011

    摘要： A secondary battery 100 includes: a positive electrode mixture layer 223 containing a positive electrode active material 610 and an electrically conductive material 620; a positive electrode current collector 221 on which the positive electrode mixture layer 223 is coated; a negative electrode mixture layer 243 containing a negative electrode active material 710; and a negative electrode current collector 241 on which the negative electrode mixture layer 243 is coated, wherein a porosity A1 of the positive electrode mixture layer 223 satisfies 0.30≦A1 and, at the same time, a porosity A2 of the negative electrode mixture layer 243 satisfies 0.30≦A2.

    摘要翻译： 二次电池100包括：含有正极活性物质610和导电材料620的正极合剂层223; 正极集电体221，其上涂覆有正极复合层223; 含有负极活性物质710的负极合剂层243; 负极集电体241，其上涂覆有负极混合层243，其中正极合剂层223的孔隙率A1满足0.30×A1，同时，负极合剂层243的孔隙率A2 满足0.30@A2。