公开(公告)号：US20220293931A1

公开(公告)日：2022-09-15

申请号：US17636195

申请日：2020-07-28

申请人： Panasonic Corporation ,  SANYO Electric Co., Ltd.

发明人： Katsuya Inoue ,  Takeshi Ogasawara ,  Yoshinori Aoki ,  Shun Nomura

IPC分类号： H01M4/525 ,  H01M4/505

摘要： This positive electrode active material for nonaqueous electrolyte secondary batteries comprises a lithium-transition metal composite oxide and a surface modification layer. The lithium transition metal composite oxide contains at least Al and 80 mol % or more Ni with reference to the total number of moles of metal elements excluding Li, and the surface modification layer contains at least Sr and is formed on the surface of primary particles of the lithium-transition metal composite oxide.

公开(公告)号：US10483594B2

公开(公告)日：2019-11-19

申请号：US15541841

申请日：2015-09-29

申请人： Panasonic Corporation ,  Sanyo Electric Co., Ltd.

发明人： Hiroshi Kawada ,  Motoharu Saito ,  Kenichi Hotehama ,  Yoshinori Aoki

IPC分类号： H01M4/13 ,  H01M4/48 ,  H01M4/02 ,  H01M10/0587 ,  H01M4/131 ,  H01M4/136 ,  H01M10/0525

摘要： A positive electrode plate (11) includes a current collector (30) and a mixture layer (31) disposed on the current collector (30). The mixture layer (31) has a thin portion (32) with a thickness of less than 200 μm disposed on an inner coil half of the current collector (30) and a thick portion (33) having a larger thickness than the thin portion (32), the thick portion (33) having a yield loop height H measured by a stiffness test of 6 mm

公开(公告)号：US20180013173A1

公开(公告)日：2018-01-11

申请号：US15541841

申请日：2015-09-29

申请人： Panasonic Corporation ,  Sanyo Electric Co., Ltd.

发明人： Hiroshi Kawada ,  Motoharu Saito ,  Kenichi Hotehama ,  Yoshinori Aoki

IPC分类号： H01M10/0587 ,  H01M4/13 ,  H01M4/48 ,  H01M4/02

CPC分类号： H01M10/0587 ,  H01M4/13 ,  H01M4/131 ,  H01M4/136 ,  H01M4/48 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

摘要： A positive electrode plate (11) includes a current collector (30) and a mixture layer (31) disposed on the current collector (30). The mixture layer (31) has a thin portion (32) with a thickness of less than 200 μm disposed on an inner coil half of the current collector (30) and a thick portion (33) having a larger thickness than the thin portion (32), the thick portion (33) having a yield loop height H measured by a stiffness test of 6 mm

公开(公告)号：US20220336795A1

公开(公告)日：2022-10-20

申请号：US17640271

申请日：2020-07-30

申请人： Panasonic Corporation ,  SANYO Electric Co., Ltd.

发明人： Yoshinori Aoki ,  Takeshi Ogasawara ,  Shun Nomura

IPC分类号： H01M4/36 ,  H01M4/525 ,  H01M4/134 ,  H01M10/0525

摘要： A non-aqueous electrolyte secondary battery that is an exemplary embodiment of the present invention, wherein a positive electrode contains a lithium-transition metal composite oxide containing Ni, Al and Sr as a positive electrode active substance. In the lithium-transition metal composite oxide, the content of Ni is 80-95 mol %, the content of Al is 8.0 mol % or less, the content of Sr is 1.2 mol % or less, and the proportion of metallic elements other than Li that are present in a Li layer is 0.5-2.0 mol %. A negative electrode has a Sr-containing coating film formed on a surface of a negative electrode mixture layer. The content of Sr in the coating film is 20-400 ppm relative to the total mass of the negative electrode mixture layer and the coating film.

公开(公告)号：US20220255074A1

公开(公告)日：2022-08-11

申请号：US17621874

申请日：2020-06-23

申请人： Panasonic Corporation ,  SANYO Electric Co., Ltd.

发明人： Yoshinori Aoki ,  Shun Nomura ,  Takeshi Ogasawara

IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  H01M10/0525

摘要： Provided is a cathode active material for a non-aqueous-electrolyte secondary battery, the cathode active material containing a lithium composite oxide that has a layered structure containing a Li layer and that is represented by general formula LiaNiαAlβCoγMδSrxO2-w (in the formula, 0.95