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：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：US20180301711A1

公开(公告)日：2018-10-18

申请号：US15767303

申请日：2016-10-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TSUTOMU KAWASHIMA ,  KEIICHI KONDOU ,  MASASHI SHOJI ,  KOJI OGAWA

IPC: H01M4/86 ,  H01M4/88

CPC classification number: H01M4/8626 ,  H01M4/88 ,  H01M4/8807 ,  H01M4/96 ,  H01M8/02 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0243 ,  H01M8/10 ,  Y02P70/56

Abstract: Disclosed is a gas-diffusion layer used for fuel cells, including: a porous material that includes as main ingredients conductive particles and a polymer resin, wherein said gas-diffusion layer internally possesses pores with a size from 0.01 μm to 0.05 μm, and hollows with a size from 1 μm to 200 μm. Further disclosed is a process for producing a gas-diffusion layer used for fuel cells, including: (i) kneading conductive particles, a polymer resin, a pore-forming agent, a surfactant, and a dispersion solvent; (ii) rolling the mixture obtained in Step (i) to shape said mixture into a sheet; (iii) baking the sheet-shaped mixture to sublime the pore-forming agent, thereby forming hollows therein, and to remove the surfactant and the dispersion solvent; and (iv) further rolling the baked mixture to adjust a thickness of the baked mixture.

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：US20170365862A1

公开(公告)日：2017-12-21

申请号：US15695036

申请日：2017-09-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KAZUYA YAMASAKI ,  HITOSHI ISHIMOTO ,  MASASHI SHOJI ,  KEIICHI KONDOU

IPC: H01M4/90 ,  H01M4/88 ,  B01J23/42 ,  H01M4/86 ,  H01M8/10 ,  H01M8/02

CPC classification number: H01M4/9083 ,  B01J23/42 ,  H01M4/8657 ,  H01M4/8892 ,  H01M4/926 ,  H01M8/02 ,  H01M8/10 ,  H01M8/1004

Abstract: A fuel cell catalyst layer includes a plurality of carbon particles, a plurality of catalyst particles, and at least one plate-shaped carbon member disposed between the plurality of carbon particles. The plurality of catalyst particles are supported on surfaces of the plurality of carbon particles. The plate-shaped carbon member may be replaced with a rod-shaped carbon member.