公开(公告)号：US11201334B2

公开(公告)日：2021-12-14

申请号：US16568826

申请日：2019-09-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuki Endo ,  Tomoki Shiozaki ,  Yuji Oura

IPC: H01M4/66 ,  H01M4/131 ,  H01M4/62 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/02 ,  H01M10/052 ,  H01M10/0585

Abstract: A positive electrode is provided with: a positive electrode current collector constituted of aluminum as the main component; a positive electrode mixture layer formed on the positive electrode current collector aid containing a lithium-containing transition metal oxide; and a protective layer interposed between the positive electrode current collector and the positive electrode mixture layer. The protective layer contains inorganic particles, a conductive agent, and a binder material. In the positive electrode, the peel strength between the positive electrode current collector and the protective layer is higher than the peel strength between the protective layer and the positive electrode mixture layer.

公开(公告)号：US11276860B2

公开(公告)日：2022-03-15

申请号：US16493512

申请日：2018-02-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuki Endo

IPC: H01M4/62 ,  H01M4/485 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/02

Abstract: A positive electrode includes a positive electrode current collector based on aluminum, a positive electrode mixture layer disposed on the positive electrode current collector and including a lithium transition metal oxide, and a protective layer disposed between the positive electrode current collector and the positive electrode mixture layer. The protective layer includes inorganic particles, a conductive agent and a binder, the inorganic particles being a major component of the protective layer. The protective layer includes a first region disposed on the positive electrode current collector over substantially the entirety of a section covered with the positive electrode mixture layer, and a second region disposed on the positive electrode current collector so as to extend from a periphery of the positive electrode mixture layer. The weight per unit area of the second region is not less than 1.5 times the weight per unit area of the first region.

公开(公告)号：US20210135229A1

公开(公告)日：2021-05-06

申请号：US16493512

申请日：2018-02-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuki Endo

IPC: H01M4/62 ,  H01M4/66 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0585

Abstract: A positive electrode includes a positive electrode current collector based on aluminum, a positive electrode mixture layer disposed on the positive electrode current collector and including a lithium transition metal oxide, and a protective layer disposed between the positive electrode current collector and the positive electrode mixture layer. The protective layer includes inorganic particles, a conductive agent and a binder, the inorganic particles being a major component of the protective layer. The protective layer includes a first region disposed on the positive electrode current collector over substantially the entirety of a section covered with the positive electrode mixture layer, and a second region disposed on the positive electrode current collector so as to extend from a periphery of the positive electrode mixture layer. The weight per unit area of the second region is not less than 1.5 times the weight per unit area of the first region.

公开(公告)号：US20200006778A1

公开(公告)日：2020-01-02

申请号：US16568826

申请日：2019-09-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuki Endo ,  Tomoki Shiozaki ,  Yuji Oura

IPC: H01M4/66 ,  H01M4/131 ,  H01M4/62 ,  H01M4/485 ,  H01M10/0525

Abstract: A positive electrode is provided with: a positive electrode current collector constituted of aluminum as the main component; a positive electrode mixture layer formed on the positive electrode current collector aid containing a lithium-containing transition metal oxide; and a protective layer interposed between the positive electrode current collector and the positive electrode mixture layer. The protective layer contains inorganic particles, a conductive agent, and a binder material. In the positive electrode, the peel strength between the positive electrode current collector and the protective layer is higher than the peel strength between the protective layer and the positive electrode mixture layer.