公开(公告)号：US12272849B2

公开(公告)日：2025-04-08

申请号：US17849346

申请日：2022-06-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinichiro Imura ,  Takeshi Minamiura ,  Kenichi Ezaki ,  Tsutomu Kawashima ,  Miyuki Yoshimoto

IPC: H01M8/1004 ,  H01M4/88 ,  H01M4/96

Abstract: A membrane electrode assembly for a fuel cell includes a catalyst layer having a first main surface and a second main surface, a gas diffusion layer disposed on a side of the first main surface, and an electrolyte membrane disposed on a side of the second main surface, wherein the gas diffusion layer includes a conductive material and a polymer resin, the conductive material comprises a fibrous carbon material, an average fiber diameter D of the fibrous carbon material is equal to or less than 25% of a thickness T of the catalyst layer, and in a cross section in a thickness direction of the catalyst layer, an arithmetic mean roughness Ra1 of the first main surface and an arithmetic mean roughness Ra2 of the second main surface satisfies the relation, Ra1>Ra2.

公开(公告)号：US11682770B2

公开(公告)日：2023-06-20

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 ,  H01M4/88 ,  H01M4/92 ,  H01M8/1004 ,  H01M8/10

CPC classification number: H01M4/8673 ,  H01M4/8657 ,  H01M4/8807 ,  H01M4/92 ,  H01M4/921 ,  H01M8/1004 ,  H01M2008/1095

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：US11799092B2

公开(公告)日：2023-10-24

申请号：US17044654

申请日：2019-07-18

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Shinichiro Imura ,  Takeshi Minamiura ,  Hitoshi Ishimoto

IPC: H01M4/92 ,  H01M4/86 ,  H01M8/10 ,  H01M8/1018

CPC classification number: H01M4/921 ,  H01M4/8673 ,  H01M8/10 ,  H01M8/1018 ,  H01M2004/8689 ,  H01M2008/1095 ,  H01M2250/20

Abstract: A cathode catalyst layer of fuel cells, the cathode catalyst layer including a first fibrous electrically-conductive member, a first particulate electrically-conductive member, first catalyst particles, and a first proton conductive resin. A ratio I1/C1 of a mass of the first proton conductive resin to a mass of the first electrically particulate conductive member is in a range of 1.0 to 1.6. A ratio of the first fibrous electrically-conductive member to 100 parts by mass of the first particulate conductive member is 30 to 50 parts by mass. The first proton conductive resin has an EW value of 600 to 850.

公开(公告)号：US11763999B2

公开(公告)日：2023-09-19

申请号：US17562098

申请日：2021-12-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yukiyasu Sugihara ,  Norihiko Ogata ,  Kazuhide Gotou ,  Yuma Yano ,  Yuki Ueda ,  Takeshi Minamiura ,  Masayuki Hogiri

IPC: H01G9/052 ,  H01G9/00 ,  H01G9/15

CPC classification number: H01G9/0525 ,  H01G9/0032 ,  H01G9/15

Abstract: An electrolytic capacitor includes an anode body having a porous structure, an anode lead partially embedded in the anode body, a dielectric layer formed on a surface of the anode body, and a cathode part that covers at least part of the dielectric layer. The anode body has a first region in which first particles sintered together and a second region in which second particles sintered together. The average particle diameter D1 of the first particles is smaller than the average particle diameter D2 of the second particles. The volume-based pore diameter distribution of the anode body with the dielectric layer has a first peak in a range of less than or equal to 0.5 μm in pore diameter, and a second peak in a range of more than 0.5 μm in pore diameter.

公开(公告)号：US10923742B2

公开(公告)日：2021-02-16

申请号：US15697448

申请日：2017-09-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi Minamiura ,  Takashi Yasuo ,  Tsutomu Kawashima ,  Hiroaki Suzuki ,  Miyuki Yoshimoto ,  Shinichiro Imura

IPC: H01M8/0273 ,  H01M8/0239 ,  H01M8/0247 ,  H01M8/0243 ,  H01M4/86 ,  H01M8/0284 ,  H01M8/0286 ,  H01M8/1004 ,  H01M8/1018

Abstract: A fuel cell includes a pair of separators for clamping a laminate including a membrane electrode assembly, an anode gas diffusion layer, and a cathode gas diffusion layer, and a frame formed from thermosetting resin and disposed between the separators to surround a periphery of the laminate. At least one of the anode and the cathode gas diffusion layers is formed from a composite of thermoplastic resin and conductive particles, and includes a protrusion protruding beyond a level of a surface of the frame which faces one of the separators in a state that the laminate is not clamped between the separators under a predetermined pressure. The one of the separators presses the protrusion and gets the one of the gas diffusion layers to be deformed and put into contact with the frame in a state that the laminate is clamped between the separators under the predetermined pressure.

公开(公告)号：US11011769B2

公开(公告)日：2021-05-18

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: H01M8/24 ,  H01M8/22 ,  H01M8/1004 ,  H01M4/86 ,  H01M4/66 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0245 ,  H01M8/1018

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：US11923550B2

公开(公告)日：2024-03-05

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: H01M4/88 ,  H01M4/86 ,  H01M4/90 ,  H01M4/92 ,  H01M8/0258 ,  H01M8/1004

CPC classification number: H01M4/9083 ,  H01M4/8673 ,  H01M4/8807 ,  H01M4/881 ,  H01M4/926 ,  H01M8/0258 ,  H01M8/1004

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.