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：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：US11108055B2

公开(公告)日：2021-08-31

申请号：US16209022

申请日：2018-12-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoko Kasai ,  Yoshifumi Taguchi ,  Tsutomu Kawashima ,  Tsutomu Fujii ,  Shinichiro Imura ,  Toshihiro Otsuka ,  Miyuki Yoshimoto ,  Kozue Kuniyoshi

IPC: H01M8/0247 ,  H01M8/0273 ,  H01M8/242 ,  H01M8/0282 ,  H01M8/0284 ,  H01M8/1018

Abstract: A fuel cell includes: an electrolyte membrane; a cathode positioned on a first surface of the electrolyte membrane; an anode positioned on a second surface of the electrolyte membrane; a cathode-side sealant positioned on a surface of the cathode different from the electrolyte membrane side of the cathode; an anode-side sealant positioned on a surface of the anode different from the electrolyte membrane side of the anode; a cathode-side separator positioned on a surface of the cathode-side sealant different from the cathode side of the cathode-side sealant; and an anode-side separator positioned on a surface of the anode-side sealant different from the anode side of the anode-side sealant. The anode-side separator has a projection on a surface stacked on the anode-side sealant, or the cathode-side separator has a projection on a surface stacked on the cathode-side sealant.