公开(公告)号：US20200335797A1

公开(公告)日：2020-10-22

申请号：US16957192

申请日：2018-12-26

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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

IPC: H01M4/86 ,  H01M4/92 ,  H01M4/88 ,  H01M8/1004

Abstract: Disclosed is a catalyst layer for a fuel cell that has good gas diffusion properties in the entire catalyst layer and in which coarsening of catalyst particles can be suppressed. The catalyst layer for a fuel cell includes fibrous conductive members and catalyst particles. The fibrous conductive members are inclined relative to the surface direction of the catalyst layer, and the length L of the fibrous conductive members and the thickness T of the catalyst layer satisfy the relational expression: L/T≤3. Each of the catalyst particles includes a core portion and a shell portion that covers the core portion, and contains a component different from that of the core portion.

公开(公告)号：US20210143460A1

公开(公告)日：2021-05-13

申请号：US16488193

申请日：2018-02-09

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hitoshi ISHIMOTO ,  Kazuya YAMASAKI ,  Motohiro SAKATA

IPC: H01M8/1004 ,  H01M4/86

Abstract: A membrane electrode assembly includes an electrolyte membrane, and a pair of electrode layers which sandwich the electrolyte membrane. The pair of electrode layers include a pair of catalyst layers which sandwich the electrolyte membrane, and a pair of gas diffusion layers disposed on the pair of catalyst layers on opposite sides to the electrolyte membrane. At least one catalyst layer contains a fibrous electric conductor, catalyst particles, a particulate electric conductor, and a proton-conductive resin. The at least one catalyst layer has a first region at a distance of 200 nm or less from the fibrous electric conductor, and a second region at a distance of more than 200 nm from the fibrous electric conductor. Pores are present in the first and second regions. A mode diameter M1 of the pores in the first region and a mode diameter M2 of the pores in the second region satisfy M1

公开(公告)号：US20190198906A1

公开(公告)日：2019-06-27

申请号：US16331666

申请日：2017-09-05

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Motohiro SAKATA ,  Takeshi MINAMIURA ,  Shinichiro IMURA ,  Hitoshi ISHIMOTO ,  Kazuya YAMASAKI ,  Chiho NOBUMORI ,  Yukihiro SHIMASAKI ,  Tsutomu FUJII

IPC: H01M8/22 ,  H01M8/0245 ,  H01M4/66 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/24

CPC classification number: H01M8/225 ,  H01M4/663 ,  H01M4/667 ,  H01M4/86 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0245 ,  H01M8/10 ,  H01M8/24

Abstract: Provided is a fuel cell catalyst layer including: a fibrous carbon material; catalyst particles; a particulate carbon material; and a proton-conductive resin, wherein a region A including at least the fibrous carbon material in a state of an agglomerated body and a region B including at least the catalyst particles, the particulate carbon material, and the proton-conductive resin are formed, the region A being disposed in an island form in the region B.

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：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.

公开(公告)号：US20240161985A1

公开(公告)日：2024-05-16

申请号：US18549498

申请日：2022-03-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinji KONDOU ,  Kazuya YAMASAKI ,  Takashi KAWASAKI ,  Koji YOKOYAMA ,  Hitoshi ISHIMOTO ,  Yoshihisa NAGASAKI ,  Yuji MIYACHI

IPC: H01G9/028 ,  H01G9/00 ,  H01G9/048 ,  H01G9/15

CPC classification number: H01G9/028 ,  H01G9/0036 ,  H01G9/048 ,  H01G9/15

Abstract: An electrolytic capacitor includes an anode body, a dielectric layer that covers the anode body, a first solid electrolyte layer that covers the dielectric layer, and a second solid electrolyte layer that covers the first solid electrolyte layer. The first solid electrolyte layer contains a first conductive polymer that includes polypyrrole as a basic skeleton. The second solid electrolyte layer contains a second conductive polymer that includes polythiophene as a basic skeleton. The second solid electrolyte layer has a thickness of 1 μm or more.

公开(公告)号：US20210167400A1

公开(公告)日：2021-06-03

申请号：US16479881

申请日：2018-02-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuya YAMASAKI ,  Hitoshi ISHIMOTO ,  Motohiro SAKATA

IPC: H01M4/92 ,  H01M4/86 ,  H01M8/1004

Abstract: A membrane electrode assembly includes an electrolyte membrane, and a pair of electrodes sandwiching the electrolyte membrane. The pair of electrodes each include a catalyst layer, and a gas diffusion layer disposed on the catalyst layer on an opposite side to the electrolyte membrane. At least one of the catalyst layers contains first catalyst particles, and second catalyst particles. The first catalyst particles are either platinum particles or platinum alloy particles, or both. The second catalyst particles are core-shell particles having a core part and a shell part, the core part formed of at least one selected from transition metals other than platinum, the shell part covering the core part and formed of at least one of platinum and a platinum alloy. In the catalyst layer, the second catalyst particles are present in a smaller percentage in an electrolyte membrane side than they are in a gas diffusion layer side.

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.