公开(公告)号：US20210075024A1

公开(公告)日：2021-03-11

申请号：US16957450

申请日：2018-12-26

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takeshi MINAMIURA ,  Hitoshi ISHIMOTO ,  Shinichiro IMURA ,  Kazuya YAMASAKI ,  Yukihiro SHIMASAKI

IPC: H01M4/90 ,  H01M8/1004 ,  H01M8/0258 ,  H01M4/88

Abstract: The preset disclosure provides a catalyst layer that has a small contact resistance with a gas diffusion layer and excellent gas diffusion properties. The catalyst layer for a fuel cell has a uniform thickness and includes fibrous conductive members and catalyst particles. The fibrous conductive members are inclined relative to a surface direction of the catalyst layer, and a lengthwise direction of the fibrous conductive members, on average, matches a first direction.

公开(公告)号：US20250166930A1

公开(公告)日：2025-05-22

申请号：US18836158

申请日：2023-01-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroaki SUZUKI ,  Hitoshi ISHIMOTO ,  Masahiro UEDA ,  Toshiyuki KATO

IPC: H01G9/035 ,  H01G9/028 ,  H01G9/052 ,  H01G9/145 ,  H01G9/15

Abstract: An electrolytic capacitor includes a porous anode body, a dielectric layer formed on a surface of the anode body, and a conductive polymer and a salt compound that are filled inside pores of the anode body. L is a shortest distance from a center of the anode body to a first principal surface of the anode body, the first principal surface being closest to the center, and a region in which a minimum value of respective distances to principal surfaces of the anode body is L/3 or less, and a region in which the minimum value is 2L/3 or more, are defined as a surface layer part and a central part, respectively, inside the anode body. A ratio B/A of an ion strength B derived from the salt compound to a sum A of all ion strengths measured by time-of-flight secondary ion mass spectrometry (TOF-SIMS) in a cross section that passes through the center and that is perpendicular to the first principal surface is defined as an ion strength ratio. A ratio R2/R1 of an ion strength ratio R2 in the central part of the anode body to an ion strength ratio R1 in the surface layer part of the anode body is 0.15 or more.

公开(公告)号：US20230343522A1

公开(公告)日：2023-10-26

申请号：US18245814

申请日：2021-09-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Chiho NOBUMORI ,  Kenichi EZAKI ,  Hitoshi ISHIMOTO

IPC: H01G11/32 ,  H01G11/26 ,  H01G11/86

CPC classification number: H01G11/32 ,  H01G11/26 ,  H01G11/86

Abstract: Disclosed is a capacitor electrode including a conductive substrate and a flaky carbon that is electrically connected to the conductive substrate, the flaky carbon having an oxygen content of less than 5 mass % and a three-dimensional structure, wherein it is desired that the oxygen content of the flaky carbon is less than 2.6 mass %, and a log differential pore volume distribution of the capacitor electrode measured based on mercury porosimetry may have a maximum peak in a range of 0.3 μm or more and 6 μm or less.

公开(公告)号：US20230145058A1

公开(公告)日：2023-05-11

申请号：US17802065

申请日：2021-02-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro YOSHINO ,  Hiroaki SUZUKI ,  Hitoshi ISHIMOTO ,  Toshiyuki KATO ,  Masahiro UEDA

IPC: H01G9/042 ,  H01G9/025

CPC classification number: H01G9/042 ,  H01G9/025

Abstract: A method for producing an electrode for an electrolytic capacitor, the method including: a chemical conversion step of allowing a current to flow through a metal material containing a valve metal in a chemical conversion solution containing an electrolyte, to form an oxide film on a surface of the metal material, wherein the chemical conversion solution contains a nitrate-based compound as the electrolyte at a concentration of 0.03 mass % or more, and a phosphorus compound concentration in the chemical conversion solution is less than 0 01 mass %.

公开(公告)号：US20230070969A1

公开(公告)日：2023-03-09

申请号：US17799578

申请日：2021-02-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuya YAMASAKI ,  Shinji KONDOU ,  Hitoshi ISHIMOTO ,  Yukihiro SHIMASAKI ,  Yuji MIYACHI ,  Kohei YAMAGUCHI

IPC: H01G9/048 ,  H01G9/15 ,  H01G9/042

Abstract: A disclosed capacitor element includes: a first electrode; a dielectric layer covering at least a portion of the first electrode; and a second electrode covering at least a portion of the dielectric layer. The second electrode includes a solid electrolyte layer, a conductive carbon layer covering at least a portion of the solid electrolyte layer, and a metal paste layer covering at least a portion of the carbon layer. The carbon layer includes flake carbon particles and spherical carbon particles. A particle diameter of the spherical carbon particles is less than an average major diameter of the flake carbon particles, or greater than or equal to the average major diameter of the flake carbon particles.

公开(公告)号：US20220165512A1

公开(公告)日：2022-05-26

申请号：US17598781

申请日：2020-03-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenichi EZAKI ,  Chiho NOBUMORI ,  Takahiro YOSHINO ,  Hitoshi ISHIMOTO

IPC: H01G11/40 ,  H01G11/86 ,  H01G11/44

Abstract: A capacitor electrode including a first carbon, and at least one of a second carbon and a metal porous body. The first carbon includes a graphene, and the second carbon includes short carbon fibers having an average length of 10 μm or less and/or carbon particles having an average diameter of 0.1 μm or less. The graphene is layered via the second carbon.

公开(公告)号：US20220149388A1

公开(公告)日：2022-05-12

申请号：US17436577

申请日：2020-02-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroaki SUZUKI ,  Kazuya YAMASAKI ,  Hitoshi ISHIMOTO

IPC: H01M4/92 ,  H01M8/1004 ,  H01M8/10

Abstract: A cathode catalyst layer has two layers: a first catalyst layer on a gas diffusion layer side, and a second catalyst layer on an electrolyte membrane side. The first catalyst layer includes a first particulate conductive member, first catalyst particles, and a first fibrous conductive member, at least part of the first catalyst particles being supported on the first particulate conductive member. The second catalyst layer includes a second particulate conductive member and second catalyst particles, at least part of the second catalyst particles being supported on the second particulate conductive member. A catalyst support density D2 of the second catalyst particles on the second particulate conductive member is greater than a catalyst support density Di of the first catalyst particles on the first particulate conductive member.