公开(公告)号：US11824187B2

公开(公告)日：2023-11-21

申请号：US17745287

申请日：2022-05-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Motohiro Okochi ,  Akihiro Horikawa ,  Shuzo Tsuchida

IPC: H01M4/36 ,  H01M10/0565 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M10/0565 ,  H01M2004/027 ,  H01M2004/028

Abstract: A negative electrode active substance is used for a negative electrode layer of an all-solid battery and contains a plurality of secondary particles. The plurality of secondary particles contain impregnated particles which are secondary particles having a polymer solid electrolyte region impregnated with the polymer solid electrolyte therein and an active material region.

公开(公告)号：US20220416251A1

公开(公告)日：2022-12-29

申请号：US17719440

申请日：2022-04-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toshiyuki Kojima ,  Shuzo Tsuchida ,  Akihiro Horikawa

IPC: H01M4/62 ,  H01M10/0562

Abstract: A positive electrode layer is to be used in an all-solid-state battery, and includes a positive electrode current collector; a positive electrode junction layer including at least a conductive agent and disposed on the positive electrode current collector; and a positive electrode material mixture layer disposed on the positive electrode junction layer and including at least a positive electrode active material including a plurality of particles, a solid electrolyte having ion conductivity, and a plurality of conductive fibers. The plurality of conductive fibers include a conductive fiber that is positioned to connect adjacent particles of the positive electrode active material. A concentration of a binder included in the positive electrode material mixture layer is 100 ppm or less, and a concentration of a solvent included in the positive electrode material mixture layer is 50 ppm or less.

公开(公告)号：US11342592B2

公开(公告)日：2022-05-24

申请号：US16714604

申请日：2019-12-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akihiro Horikawa ,  Kazufumi Miyatake ,  Motohiro Okochi

IPC: H01M10/0585 ,  H01M4/13 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/02

Abstract: An all-solid battery includes a positive-electrode layer having a positive-electrode current collector and a positive-electrode mixture layer, a negative-electrode layer having a negative-electrode current collector and a negative-electrode mixture layer, and a solid electrolyte layer. The positive-electrode mixture layer contains a positive-electrode active material and a solid electrolyte. The solid electrolyte layer is disposed between the positive-electrode mixture layer and the negative-electrode mixture layer. In the positive-electrode mixture layer, the active material volume proportion is larger and the porosity is smaller in a portion closer to the positive-electrode current collector than in a portion far from the positive-electrode current collector.