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。

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。

公开(公告)号：US09225008B2

公开(公告)日：2015-12-29

申请号：US13879132

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： H01M4/131 ,  H01M10/00 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

CPC分类号： H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/00 ,  H01M2004/021 ,  H01M2220/20 ,  Y02E60/122 ,  Y10T29/49108

摘要： A porosity X of a positive electrode mixture layer 223 of a secondary battery 100 is 30(%)≦X. A mass ratio α of a positive electrode active material 610 in the positive electrode mixture layer 223 is 0.84≦α≦0.925 and a mass ratio β of a conductive material 620 in the positive electrode mixture layer 223 is 0.06≦β≦0.12. In the secondary battery 100, an index Y worked out from an expression below is 30 (mL/100 g)≦Y≦89 (mL/100 g). The index Y is given by the expression below, Y=A×α+B×β; where A is a DBP absorption number (mL/100 g) in the positive electrode active material 610; α is the mass ratio of the positive electrode active material 610 in the positive electrode mixture layer 223; B is a DBP absorption number (mL/100 g) of the conductive material 620; and β is the mass ratio of the conductive material 620 in the positive electrode mixture layer 223.

摘要翻译： 二次电池100的正极合剂层223的孔隙率X为30（％）×nlE; X。 正极合剂层223中的正极活性物质610的质量比α为0.84＆lt; 1;α＆nlE; 0.925，质量比＆bgr; 正电极混合物层223中的导电材料620的电阻率为0.06＆lt; nlE;＆amp; nlE; 0.12。 在二次电池100中，从以下表达式得出的指数Y为30（mL / 100g）＆nlE; Y＆lt; ll; 89（mL / 100g）。 指标Y由下式给出：Y = A×α+ B×＆bgr; 其中A是正极活性物质610中的DBP吸收值（mL / 100g） α是正极合剂层223中的正极活性物质610的质量比; B是导电材料620的DBP吸收数（mL / 100g） 和＆bgr 是正极合剂层223中的导电材料620的质量比。

公开(公告)号：US20130224586A1

公开(公告)日：2013-08-29

申请号：US13879132

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： H01M4/131 ,  H01M10/00

CPC分类号： H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/00 ,  H01M2004/021 ,  H01M2220/20 ,  Y02E60/122 ,  Y10T29/49108

摘要： A porosity X of a positive electrode mixture layer 223 of a secondary battery 100 is 30(%)≦X. A mass ratio α of a positive electrode active material 610 in the positive electrode mixture layer 223 is 0.84≦α≦0.925 and a mass ratio β of a conductive material 620 in the positive electrode mixture layer 223 is 0.06≦β≦0.12. In the secondary battery 100, an index Y worked out from an expression below is 30 (mL/100 g)≦Y≦89 (mL/100 g). The index Y is given by the expression below, Y=A×α+B×β; where A is a DBP absorption number (mL/100 g) in the positive electrode active material 610; α is the mass ratio of the positive electrode active material 610 in the positive electrode mixture layer 223; B is a DBP absorption number (mL/100 g) of the conductive material 620; and β is the mass ratio of the conductive material 620 in the positive electrode mixture layer 223.

摘要翻译： 二次电池100的正极合剂层223的孔隙率X为X（％）。 正极合剂层223中的正极活性物质610的质量比α为0.84 @α0.2525，正极合剂层223中的导电性材料620的质量比β为0.06 @β@ 0.12。 在二次电池100中，从下式得出的指数Y为Y（89 / mL）（mL / 100g）为30（mL / 100g）。 指标Y由以下表达式给出，Y = A×α+ B×β; 其中A是正极活性物质610中的DBP吸收值（mL / 100g） α是正极合剂层223中的正极活性物质610的质量比; B是导电材料620的DBP吸收数（mL / 100g） β是正极合剂层223中的导电材料620的质量比。

公开(公告)号：US20130209879A1

公开(公告)日：2013-08-15

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

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。 在正极合剂层223内形成的孔的内部容积Vbc与正极合剂层223的表观体积Va的比（Vbc / Va）满足0.25（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 @（Vb / Vc）@ 2.5。

公开(公告)号：US09997743B2

公开(公告)日：2018-06-12

申请号：US14002388

申请日：2011-03-03

申请人： Hiroki Nagai ,  Masahiro Morita ,  Takashi Iwao ,  Yukihiro Okada

发明人： Hiroki Nagai ,  Masahiro Morita ,  Takashi Iwao ,  Yukihiro Okada

IPC分类号： H01M2/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0566 ,  H01M10/0587 ,  H01M10/0568 ,  H01M10/0569

CPC分类号： H01M2/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0566 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0587 ,  Y02T10/7011

摘要： It is an object of the present invention to provide a nonaqueous electrolyte secondary battery with superior high-temperature charge-discharge cycle characteristics as well as superior low-temperature high-rate charge-discharge cycle characteristics. A nonaqueous electrolyte secondary battery 100 according to the present invention has an electrode body 80 which includes a positive electrode and a negative electrode, and a battery case 50 which houses the electrode body 80 together with a nonaqueous electrolyte, wherein among the nonaqueous electrolyte housed in the battery case 50, an electrolyte amount ratio (A/B) between a surplus electrolyte amount (A) that exists outside the electrode body 80 and an intra-electrode body electrolyte amount (B) impregnating the electrode body 80 ranges from 0.05 to 0.2, and DBP absorption of a positive electrode active material that constitutes the positive electrode is equal to or higher than 30 (ml/100 g).

公开(公告)号：US09356289B2

公开(公告)日：2016-05-31

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 ,  H01M4/13 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M4/131 ,  H01M10/0587 ,  H01M4/02

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，其上涂覆有负极复合层243，其中正极合剂层223的孔隙率A1满足0.30＆lt; nlE; A1，同时，负极混合物层的孔隙率A2 243满足0.30＆nlE; A2。

公开(公告)号：US20130295456A1

公开(公告)日：2013-11-07

申请号：US13884628

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 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54

摘要： A secondary battery 100 includes a positive electrode current collector 221 and a positive electrode mixture layer 223 coated on the positive electrode current collector 221. The positive electrode mixture layer 223 includes a positive electrode active material 610 and an electrically conductive material 620. A ratio (Vb/Va) of a volume Vb of holes formed inside the positive electrode mixture layer 223 to an apparent volume Va of the positive electrode mixture layer 223 satisfies 0.30≦(Vb/Va). In addition, in a micropore distribution of differential micropore volume with respect to a micropore diameter as measured by the mercury intrusion method, the positive electrode mixture layer 223 has a first peak at which a micropore diameter D1 satisfies D1≦0.25 μm and a second peak at which a micropore diameter D2 is greater than the first peak micropore diameter D1.

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和导电材料620。 在正极合剂层223内形成的孔的体积Vb相对于正极合剂层223的表观体积Va满足0.30（Vb / Va）。 此外，在通过水银侵入法测定的微孔体积相对于微孔直径的微孔分布中，正极合剂层223具有第一峰，微孔直径D1满足D1×0.25μm，第二峰 其中微孔直径D2大于第一微孔直径D1。

公开(公告)号：US09184442B2

公开(公告)日：2015-11-10

申请号：US13884628

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 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/02

CPC分类号： H01M4/485 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54

摘要： A secondary battery 100 includes a positive electrode current collector 221 and a positive electrode mixture layer 223 coated on the positive electrode current collector 221. The positive electrode mixture layer 223 includes a positive electrode active material 610 and an electrically conductive material 620. A ratio (Vb/Va) of a volume Vb of holes formed inside the positive electrode mixture layer 223 to an apparent volume Va of the positive electrode mixture layer 223 satisfies 0.30≦(Vb/Va). In addition, in a micropore distribution of differential micropore volume with respect to a micropore diameter as measured by the mercury intrusion method, the positive electrode mixture layer 223 has a first peak at which a micropore diameter D1 satisfies D1≦0.25 μm and a second peak at which a micropore diameter D2 is greater than the first peak micropore diameter D1.

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和导电材料620。 在正极合剂层223内形成的孔体积Vb与正极合剂层223的表观体积Va相同，为0.30＆lt; nlE;（Vb / Va）。 此外，在通过水银侵入法测定的微孔体积相对于微孔直径的微孔分布中，正极合剂层223具有第一峰，微孔直径D1满足D1＆nlE;0.25μm，第二峰 其中微孔直径D2大于第一微孔直径D1。

公开(公告)号：US20130337305A1

公开(公告)日：2013-12-19

申请号：US14002388

申请日：2011-03-03

申请人： Hiroki Nagai ,  Masahiro Morita ,  Takashi Iwao ,  Yukihiro Okada

发明人： Hiroki Nagai ,  Masahiro Morita ,  Takashi Iwao ,  Yukihiro Okada

IPC分类号： H01M10/0587 ,  H01M2/02

CPC分类号： H01M2/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0566 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0587 ,  Y02T10/7011

摘要： It is an object of the present invention to provide a nonaqueous electrolyte secondary battery with superior high-temperature charge-discharge cycle characteristics as well as superior low-temperature high-rate charge-discharge cycle characteristics. A nonaqueous electrolyte secondary battery 100 according to the present invention has an electrode body 80 which includes a positive electrode and a negative electrode, and a battery case 50 which houses the electrode body 80 together with a nonaqueous electrolyte, wherein among the nonaqueous electrolyte housed in the battery case 50, an electrolyte amount ratio (A/B) between a surplus electrolyte amount (A) that exists outside the electrode body 80 and an intra-electrode body electrolyte amount (B) impregnating the electrode body 80 ranges from 0.05 to 0.2, and DBP absorption of a positive electrode active material that constitutes the positive electrode is equal to or higher than 30 (ml/100 g).

摘要翻译： 本发明的目的是提供一种具有优异的高温充放电循环特性以及优异的低温高速充放电循环特性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100具有包括正极和负极的电极体80和将电极体80与非水电解质一起容纳的电池壳体50，其中，在非水电解质 电池壳体50，存在于电极体80外部的剩余电解质量（A）和浸渍电极体80的电极内电解质量（B）之间的电解质量比（A / B）为0.05〜0.2 构成正极的正极活性物质的DBP吸收为30以上（ml / 100g）以下。