公开(公告)号：EP3021387B1

公开(公告)日：2017-11-29

申请号：EP14823282.0

申请日：2014-07-01

申请人： Tanaka Chemical Corporation ,  Sumitomo Chemical Company Limited

发明人： IIDA Yasutaka ,  YAMASHITA Daisuke ,  MASUKAWA Takaaki ,  ITO Hiroyuki ,  KURITA Hiroyuki ,  TAKAMORI Kenji ,  IMANARI Yuichiro

IPC分类号： C01G53/00 ,  H01M4/505 ,  H01M4/525

CPC分类号： H01M4/525 ,  C01G53/50 ,  C01P2002/20 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2004/53 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16 ,  C01P2006/17 ,  C01P2006/40 ,  H01M4/366 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028

摘要： Provided is a positive electrode active material which is useful for a lithium secondary battery having a battery resistance lower than that of the conventional positive electrode active material below freezing point. The positive electrode active material for a lithium secondary battery contains at least one element selected from a group consisting of nickel, cobalt and manganese, the positive electrode active material having a layered structure and satisfying all of the following requirements (1) to (3): (1) a primary particle size is 0.1 µm to 1 µm and a secondary particle size is 1 µm to 10 µm; (2) in an X-ray powder diffraction measurement using CuK± radiation, a crystallite size in the peak within 2¸ = 18.7 ± 1° is 100 Å to 1200 Å and a crystallite size in the peak within 2¸ = 44.6 ± 1° is 100 Å to 700 Å; and (3) in a pore distribution obtained by a mercury intrusion method, a pore peak exists in a range where the pore size is 10 nm to 200 nm and a pore volume in the said range is 0.01 cm 3 /g to 0.05 cm 3 /g.

公开(公告)号：EP3021387A1

公开(公告)日：2016-05-18

申请号：EP14823282.0

申请日：2014-07-01

申请人： Tanaka Chemical Corporation ,  Sumitomo Chemical Company Limited

发明人： IIDA Yasutaka ,  YAMASHITA Daisuke ,  MASUKAWA Takaaki ,  ITO Hiroyuki ,  KURITA Hiroyuki ,  TAKAMORI Kenji ,  IMANARI Yuichiro

IPC分类号： H01M4/525 ,  H01M4/505

CPC分类号： H01M4/525 ,  C01G53/50 ,  C01P2002/20 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2004/53 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16 ,  C01P2006/17 ,  C01P2006/40 ,  H01M4/366 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028

摘要： Provided is a positive electrode active material which is useful for a lithium secondary battery having a battery resistance lower than that of the conventional positive electrode active material below freezing point. The positive electrode active material for a lithium secondary battery contains at least one element selected from a group consisting of nickel, cobalt and manganese, the positive electrode active material having a layered structure and satisfying all of the following requirements (1) to (3): (1) a primary particle size is 0.1 µm to 1 µm and a secondary particle size is 1 µm to 10 µm; (2) in an X-ray powder diffraction measurement using CuKα radiation, a crystallite size in the peak within 2θ = 18.7 ± 1° is 100 Å to 1200 Å and a crystallite size in the peak within 2θ = 44.6 ± 1° is 100 Å to 700 Å; and (3) in a pore distribution obtained by a mercury intrusion method, a pore peak exists in a range where the pore size is 10 nm to 200 nm and a pore volume in the said range is 0.01 cm 3 /g to 0.05 cm 3 /g.

摘要翻译： 本发明提供一种正极活性物质，其对于电池电阻低于低于凝固点的常规正极活性物质的锂二次电池是有用的。 锂二次电池用正极活性物质含有选自镍，钴和锰中的至少一种元素，正极活性物质具有层状结构，满足以下所有要求（1）〜（3） ：（1）一次粒径为0.1μm〜1μm，二次粒径为1μm〜10μm; （2）在使用CuK±辐射的X射线粉末衍射测量中，在2θ= 18.7±1°范围内的峰值中的微晶尺寸为100至1200，并且在2θ= 44.6±1°内的峰中的微晶尺寸 °为100埃至700埃; 和（3）在通过水银侵入法得到的孔分布中，孔径存在于孔径为10nm〜200nm的范围内，所述范围的孔体积为0.01cm 3 / g〜0.05cm 3 /G。