公开(公告)号：US20230103232A1

公开(公告)日：2023-03-30

申请号：US17931091

申请日：2022-09-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUZO TSUCHIDA ,  AKIHIRO HORIKAWA

IPC: H01M4/62 ,  H01M10/0585 ,  H01M4/36 ,  H01M4/139

Abstract: An all-solid-state battery has a structure including a positive electrode current collector; a positive electrode layer containing a positive electrode active material, a first solid electrolyte, a second solid electrolyte, and a conductive fiber; a solid electrolyte layer containing a fourth solid electrolyte; a negative electrode layer containing a negative electrode active material and a third solid electrolyte; and a negative electrode current collector. These are stacked in this order. The positive electrode layer includes: a fiber-containing region that coats the positive electrode active material and that contains the conductive fiber and the first solid electrolyte; and a fiber-free region that is located in a gap surrounded by the positive electrode active material coated by the fiber-containing region. The fiber-free region is free of the conductive fiber, and contains the second solid electrolyte.

公开(公告)号：US20220344705A1

公开(公告)日：2022-10-27

申请号：US17719436

申请日：2022-04-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUZO TSUCHIDA ,  AMI OKABE ,  YOSHIRO KITAMURA ,  AKIHIRO HORIKAWA

IPC: H01M10/0562 ,  H01M10/0585

Abstract: An all-solid-state battery has a structure in which a positive electrode current collector, a positive electrode layer containing a positive electrode active material and a solid electrolyte, a solid electrolyte layer containing a solid electrolyte, a negative electrode layer containing a negative electrode active material and a solid electrolyte, and a negative electrode current collector are stacked in this order. The solid electrolyte layer has a repeating structure in which a low porosity portion and a high porosity portion having a higher porosity than a porosity of the low porosity portion are repeated in an in-plane direction.

公开(公告)号：US20230411682A1

公开(公告)日：2023-12-21

申请号：US18460633

申请日：2023-09-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUZO TSUCHIDA ,  AMI OKABE ,  AKIHIRO HORIKAWA

IPC: H01M10/0562 ,  H01M4/04

CPC classification number: H01M10/0562 ,  H01M4/0404 ,  H01M2004/028

Abstract: An all-solid battery has a structure in which a cathode current collector, a cathode layer that contains cathode active materials constituted by a plurality of particles and solid electrolytes constituted by a plurality of particles, a solid-electrolyte layer that contains solid electrolytes, an anode layer that contains anode active materials and solid electrolytes, and an anode current collector are stacked in this order. The cathode layer includes a region where the plurality of particles constituting the solid electrolytes are filled or continuously densely packed in a sliced surface in a case where an end of the cathode layer is sliced, and a distance between two adjacent particles having a positional relationship across the region among the plurality of particles constituting the cathode active material is 2 times or more than an average particle size of the cathode active materials.

公开(公告)号：US20230405627A1

公开(公告)日：2023-12-21

申请号：US18460644

申请日：2023-09-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： AKIHIRO HORIKAWA ,  TOSHIYUKI KOJIMA

IPC: B05C1/06 ,  B05C19/04 ,  B05C19/00

CPC classification number: B05C1/06 ,  B05C19/04 ,  B05C19/008

Abstract: A squeegee is to be relatively moved in a certain direction while a desired gap is being formed with respect to a base material to uniformly level a thickness of a powder layer including powder supplied on the base material, and includes: a first portion that vibrates in contact with the powder on an upstream side of a relative movement direction of the base material with respect to the squeegee; and a second portion that vibrates in contact with the powder on a downstream side of the relative movement direction of the base material with respect to the squeegee, a vibration direction of the first portion being different from a vibration direction of the second portion.

公开(公告)号：US20210351393A1

公开(公告)日：2021-11-11

申请号：US17232395

申请日：2021-04-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOSHIYUKI KOJIMA ,  MOTOHIRO OKOCHI ,  SHUNICHI MATSUNO ,  AKIHIRO HORIKAWA

IPC: H01M4/04 ,  H01M10/0525 ,  B05C19/00

Abstract: A powder applying apparatus includes a transport device, a powder supplier, and a squeegee. The transport device moves a sheet in a predetermined direction. The powder supplier supplies powder on a surface of the sheet. The squeegee has a distance from the sheet, and the powder supplier adjusts the thickness of powder supplied onto the surface of the sheet. The squeegee vibrates at a frequency of 2 kHz or more and 300 kHz or less.

公开(公告)号：US20220200045A1

公开(公告)日：2022-06-23

申请号：US17529340

申请日：2021-11-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUZO TSUCHIDA ,  AKIHIRO HORIKAWA

IPC: H01M10/0562 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/139 ,  H01M4/04 ,  H01M4/62

Abstract: All-solid-state battery 100 has a structure in which positive electrode current collector 7, positive electrode layer 20 containing positive electrode active material 3, solid electrolyte 1 including a plurality of first particles having a first average particle diameter, and solid electrolyte 2 composed of a plurality of second particles having second average particle diameter larger than the first average particle diameter, solid electrolyte layer 10 containing solid electrolyte 6, negative electrode layer 30 containing negative electrode active material 4 and solid electrolyte 5, and negative electrode current collector 8 are stacked in this order, in which at least a part of solid electrolyte 1 serves as a cover layer 11 covering at least a part of a surface of positive electrode active material 3, and at least one of the plurality of second particles are partially embedded in cover layer 11.

公开(公告)号：US20220199973A1

公开(公告)日：2022-06-23

申请号：US17510472

申请日：2021-10-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOSHIYUKI KOJIMA ,  AKIHIRO HORIKAWA

IPC: H01M4/36

Abstract: Positive electrode layer 20 is used for an all-solid-state battery. Positive electrode layer 20 includes positive electrode active material 2 and solid electrolyte 1. A filling rate of positive electrode layer 20 is 85% or more. A porosity of positive electrode active material 2 is 5% or less.

公开(公告)号：US20220085381A1

公开(公告)日：2022-03-17

申请号：US17402613

申请日：2021-08-16

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO. LTD.

Inventor： AMI OKABE ,  SHUZO TSUCHIDA ,  AKIHIRO HORIKAWA

IPC: H01M4/66 ,  H01M4/04 ,  H01M4/36

Abstract: An electrode includes a collector, and an active material mixture layer located on the collector and containing first particles, second particles, first active material particles, and second active material particles. The active material mixture layer includes a first mixture layer located on the collector and containing the first particles and the first active material particles, and a second mixture layer located on the first mixture layer and containing the second particles and the second active material particles. The active material mixture layer has a boundary in which the first active material particles and the second active material particles are in contact with each other in a discontinuous state at least in part, in a cross-sectional view of the electrode.

公开(公告)号：US20230093941A1

公开(公告)日：2023-03-30

申请号：US17929752

申请日：2022-09-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOSHIYUKI KOJIMA ,  AKIHIRO HORIKAWA ,  SHUZO TSUCHIDA

IPC: H01M4/04

Abstract: A powder layer composite includes a current collector, and a powder layer formed on the current collector and having a film thickness of 50 μm or more. The powder layer contains a powder made of at least one type of particle material. A concentration of a solvent contained in the powder layer is 50 ppm or less. A variation in a weight per unit area of the powder layer is 10% or less in an optional region with 30 mm×30 mm in the powder layer.

公开(公告)号：US20220200044A1

公开(公告)日：2022-06-23

申请号：US17522964

申请日：2021-11-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUZO TSUCHIDA ,  AKIHIRO HORIKAWA ,  TAKESHI KOIWASAKI

IPC: H01M10/0562 ,  H01M10/0585

Abstract: All-solid-state battery 100 has a structure in which positive electrode current collector 6, positive electrode layer 20 containing positive electrode active material 3 and solid electrolyte 1, solid electrolyte layer 10 containing solid electrolyte 2, negative electrode layer 30 containing negative electrode active material 4 and solid electrolyte 5, and negative electrode current collector 7 are stacked in this order. Solid electrolyte 2 contains first material 21 and second material 22 having an ionic conductivity lower than an ionic conductivity of first material 21. First material 21 includes first particles 40, and at least a part of a surface of first particles 40 is covered with second material 22.