公开(公告)号：US20190115602A1

公开(公告)日：2019-04-18

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 ,  H01M8/0284

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.

公开(公告)号：US20180233760A1

公开(公告)日：2018-08-16

申请号：US15886816

申请日：2018-02-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YOKO KASAI ,  TSUTOMU KAWASHIMA ,  MIYUKI YOSHIMOTO ,  YOSHIFUMI TAGUCHI ,  HIROAKI SUZUKI ,  SHINICHIRO IMURA

IPC: H01M8/1018 ,  H01M8/026 ,  H01M2/16

CPC classification number: H01M8/1018 ,  H01M2/1673 ,  H01M8/026 ,  H01M8/0273 ,  H01M8/1004 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02E60/521 ,  Y02P70/56

Abstract: A fuel cell includes: an electrolyte membrane; a fuel-side catalyst layer placed on one surface of the electrolyte membrane; an oxidant-side catalyst layer placed on another surface of the electrolyte membrane; a fuel-side gas-diffusion layer placed on a main surface of the fuel-side catalyst layer; an oxidant-side gas-diffusion layer placed on a main surface of the oxidant-side catalyst layer; a pair of separators that hold the fuel-side gas-diffusion layer and the oxidant-side gas-diffusion layer therebetween; a frame that surrounds outer peripheries of the fuel-side gas-diffusion layer and the oxidant-side gas diffusion layer; a fuel-side seal member placed on a main surface of the fuel-side gas-diffusion layer; and an oxidant-side seal member placed on a main surface of the oxidant-side gas-diffusion layer. In the fuel cell, no spaces are provided between the fuel-side gas-diffusion layer and the fuel-side catalyst layer and between the oxidant-side gas-diffusion layer and the oxidant-side catalyst layer.

公开(公告)号：US20170162878A1

公开(公告)日：2017-06-08

申请号：US15434116

申请日：2017-02-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHINICHIRO IMURA ,  TSUTOMU KAWASHIMA ,  MASASHI SHOJI

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

CPC classification number: H01M4/8807 ,  H01M4/8626 ,  H01M8/023 ,  H01M8/0234 ,  H01M8/0258 ,  H01M8/1004

Abstract: A first porous layer includes a fluid flow path that has a groove-shape and has an opening in one main surface of the first porous layer. A second porous layer is disposed on the other main surface of the first porous layer. A proportion of an area occupied by conductive fibers per unit area in a cross-sectional surface of the first porous layer is smaller than a proportion of an area occupied by conductive fibers per unit area in a cross-sectional surface of the second porous layer. The second porous layer is exposed in a part of a surface of the fluid flow path.

公开(公告)号：US20210313652A1

公开(公告)日：2021-10-07

申请号：US17207794

申请日：2021-03-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TSUTOMU KAWASHIMA ,  MIYUKI YOSHIMOTO ,  TAKESHI MINAMIURA ,  SHINICHIRO IMURA

IPC: H01M50/446 ,  H01M8/1004

Abstract: A gas diffusion layer includes conductive particles, conductive fibers, and polymer resins, in which an amount of surface functional groups in the conductive particle is 0.25 mmol/g or less.

公开(公告)号：US20190181480A1

公开(公告)日：2019-06-13

申请号：US16274237

申请日：2019-02-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MASASHI SHOJI ,  HITOSHI ISHIMOTO ,  SHINICHIRO IMURA ,  HIROAKI SUZUKI

IPC: H01M8/1004 ,  H01M4/86 ,  H01M8/0202

Abstract: Provided is a membrane electrode assembly capable of keeping contact resistance between a catalyst layer and a gas diffusion layer (GDL) low. The membrane electrode assembly includes an electrolyte membrane and a pair of electrode layers disposed to sandwich the electrolyte membrane. The pair of electrode layers includes a pair of catalyst layers disposed to sandwich the electrolyte membrane, and a pair of GDLs disposed on opposite sides of the electrolyte membrane on the respective pair of catalyst layers. Each of the pair of GDLs includes a plurality of GDL protrusions that protrude on a catalyst layer side from the GDL and enter in the catalyst layer, and a gas flow path formed on an opposite side of the catalyst layer. Each of the pair of catalyst layers has a plurality of catalyst layer recesses in contact with the respective plurality of GDL protrusions.

公开(公告)号：US20210408554A1

公开(公告)日：2021-12-30

申请号：US17338584

申请日：2021-06-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TSUTOMU KAWASHIMA ,  SHINICHIRO IMURA

IPC: H01M4/88 ,  H01M8/026 ,  H01M8/0239 ,  H01M8/1004

Abstract: a fuel battery includes a membrane-electrode assembly (MEA) in which a catalyst layer and a gas diffusion layer are stacked on each of opposite surfaces of a polymer electrolyte membrane; and separators between which the membrane-electrode assembly is interposed, wherein each of the separators includes a rib and a groove on a surface that is in contact with the gas diffusion layer, the rib and the groove forming a gas flow path through which a reaction gas to be used for power generation flows, when a thickness of the gas diffusion layer is defined as h, and a width of a portion of the rib that is in contact with the gas diffusion layer is defined as Rw, 0.29 Rw≤h≤0.55 Rw is satisfied, the gas diffusion layer includes conductive particles, conductive fibers, and a polymer resin, and average fiber length Fl and average fiber diameter Fd of the conductive fibers satisfy Fl

公开(公告)号：US20170179498A1

公开(公告)日：2017-06-22

申请号：US15446946

申请日：2017-03-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MASASHI SHOJI ,  TSUTOMU KAWASHIMA ,  SHINICHIRO IMURA ,  KEIICHI KONDOU

IPC: H01M4/88 ,  B29C59/02

CPC classification number: H01M4/8807 ,  B29C59/026 ,  B29K2105/167 ,  B29K2995/0005 ,  B29L2009/005 ,  B29L2031/3468 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0243 ,  H01M8/026 ,  H01M2008/1095 ,  Y02P70/56

Abstract: A fuel cell gas diffusion layer includes: a porous layer containing conductive particles and binder resin as primary components; a groove-shaped fluid flow path provided on one of main surfaces of the porous layer; and a conductive wire portion extending along the one of the main surfaces and a surface of the fluid flow path, the conductive wire portion being a layered collection of a plurality of conductive fibers which has pores.

公开(公告)号：US20170373329A1

公开(公告)日：2017-12-28

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 ,  H01M8/0286 ,  H01M4/86 ,  H01M8/1004 ,  H01M8/0284

CPC classification number: H01M8/0273 ,  H01M4/8605 ,  H01M8/0239 ,  H01M8/0243 ,  H01M8/0247 ,  H01M8/0284 ,  H01M8/0286 ,  H01M8/1004 ,  H01M2008/1095 ,  H01M2250/20 ,  H01M2250/30 ,  Y02P70/56

Abstract: A fuel cell includes a membrane electrode assembly, an anode gas diffusion layer, and a cathode gas diffusion layer, a pair of separators for clamping a laminate made up of the membrane electrode assembly, the anode gas diffusion layer and cathode gas diffusion layer, and a frame that is formed from thermosetting resin and disposed between the separators to surround a periphery of the laminate. At least one of the anode gas diffusion layer and cathode gas diffusion layer is formed from a composite of thermoplastic resin and conductive particles, and includes a protrusion that protrudes beyond a level of a surface of the frame which faces one of the pair of 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 at least 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.