公开(公告)号：US20230128084A1

公开(公告)日：2023-04-27

申请号：US17910094

申请日：2021-01-14

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yosuke Takayama ,  Takao Kuromiya ,  Satoru Maeda ,  Rikiya Okimoto

IPC: H01M4/36 ,  H01M4/62

Abstract: This electrode for batteries is provided with: a core material; and a mixture layer which contains an active material and a binder, while being arranged on the surface of the core material. If the mixture layer is trisected in the thickness direction and the divided sections are defined as the first region, the second region and the third region sequentially from the core material side, the void fraction of the second region is higher than the void fraction of the first region.

公开(公告)号：US20230299261A1

公开(公告)日：2023-09-21

申请号：US17909475

申请日：2021-01-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinichiro Kondo ,  Reiko Izumi ,  Daisuke Katou ,  Takuya Jin ,  Yosuke Takayama ,  Masateru Mikami

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  H01M4/13 ,  H01M4/139

CPC classification number: H01M4/0471 ,  H01M4/0435 ,  H01M4/13 ,  H01M4/139 ,  H01M4/623 ,  H01M4/661

Abstract: This secondary battery electrode is provided with a core material configured from a metal foil that softens at less than or equal to 200° C. and an electrode mixture sheet which is bonded on the surface of the core material. The electrode mixture sheet includes an active material and a fibrous binder, and the active material bites into the core material, with the maximum bite depth at least 30% of the thickness of the core material. The fibrous binder may for example have polytetrafluoroethylene as the main component.

公开(公告)号：US20230261197A1

公开(公告)日：2023-08-17

申请号：US18015827

申请日：2021-05-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Satoru Maeda ,  Yosuke Takayama ,  Takao Kuromiya

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/622 ,  H01M10/0525 ,  H01M4/625 ,  H01M2004/028 ,  H01M2004/021

Abstract: This positive electrode for batteries comprises a positive electrode mixture that contains at least a positive electrode active material, a conductive agent and a fibrous binder; and the ratio of the BET specific surface area (Spo) of the positive electrode mixture to the BET specific surface area (Sin) of inorganic particles containing the positive electrode active material and the conductive agent, namely Spo/Sin is from 1.0 to 2.0.