公开(公告)号：US20220200012A1

公开(公告)日：2022-06-23

申请号：US17602054

申请日：2020-03-16

Applicant: TORAY INDUSTRIES, INC.

Inventor： Masamichi UTSUNOMIYA ,  Satoru SHIMOYAMA ,  Fumitaka WATANABE

IPC: H01M4/88 ,  H01M4/92 ,  H01M4/86 ,  H01M8/1004 ,  H01M8/1018

Abstract: In order to provide a gas diffusion electrode medium having high thermal conductivity despite having low density and excellent both in handleability and cell performance, provided is a gas diffusion electrode medium including carbon fiber felt including carbon fibers having an average fiber diameter of 5 to 20 μm, wherein at least a part of the carbon fibers that constitute the carbon fiber felt have a flat part in which, in a plane view of a surface of the carbon fiber felt, a maximum value of a fiber diameter is observed to be 10 to 50% larger than the average fiber diameter, and a frequency of the flat parts at the surface of the carbon fiber felt is 50 to 200/mm2.

公开(公告)号：US20190165379A1

公开(公告)日：2019-05-30

申请号：US16312782

申请日：2017-07-04

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kentaro KAJIWARA ,  Satoru SHIMOYAMA ,  Fumitaka WATANABE ,  Yasuaki TANIMURA

IPC: H01M4/88 ,  D04H1/495 ,  D06C23/04 ,  D04H1/4242 ,  H01M4/96 ,  H01M8/1023

Abstract: The purpose of the present invention is to improve water drainage performance of a gas diffusion electrode including a carbon fiber nonwoven fabric. The present invention provides a gas diffusion electrode base material essentially consisting of a carbon fiber nonwoven fabric, wherein the carbon fiber nonwoven fabric has an in-plane basis weight pattern in which high basis weight regions having a relatively high basis weight and low basis weight regions having a relatively low basis weight are arranged, and the carbon fiber nonwoven fabric has on at least one surface an uneven pattern in which recesses and projections are arranged, the uneven pattern being formed independently of the basis weight pattern.

公开(公告)号：US20180145335A1

公开(公告)日：2018-05-24

申请号：US15570836

申请日：2016-05-27

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kentaro KAJIWARA ,  Satoru SHIMOYAMA ,  Ayanobu HORINOUCHI ,  Tomoyuki HORIGUCHI

IPC: H01M4/88 ,  H01M8/1018 ,  H01M8/1004 ,  D04H1/4242 ,  D06C15/10 ,  D06C23/00

CPC classification number: H01M4/8807 ,  D04H1/4242 ,  D06C15/10 ,  D06C23/00 ,  D10B2101/12 ,  H01M4/86 ,  H01M4/8821 ,  H01M4/8875 ,  H01M4/8885 ,  H01M4/96 ,  H01M8/1004 ,  H01M8/1018 ,  H01M2008/1095 ,  Y02P70/56

Abstract: An object of the present invention is to provide a gas diffusion electrode substrate that can facilitate both the supply of a reaction gas to a gas diffusion electrode and discharge of water as a reaction product. The present invention provides a gas diffusion electrode substrate including a carbon fiber nonwoven fabric having 30/cm2 to 5000/cm2 discontinuous protrusions dispersedly formed on at least one surface thereof, and a water repellent imparted to the carbon fiber nonwoven fabric.

公开(公告)号：US20160322646A1

公开(公告)日：2016-11-03

申请号：US15107986

申请日：2014-12-10

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kentaro KAJIWARA ,  Satoru SHIMOYAMA ,  Tomoyuki HORIGUCHI

IPC: H01M4/96 ,  H01M4/88 ,  H01M4/86

CPC classification number: H01M4/96 ,  D04H1/4242 ,  H01M4/8626 ,  H01M4/8807 ,  H01M8/0234 ,  H01M2008/1095 ,  H01M2250/20 ,  Y02P70/56 ,  Y02T90/32

Abstract: An object of the present invention is to provide a carbon fiber nonwoven fabric which has excellent electrical conductivity and thermal conductivity as an electrode base material for a polymer electrolyte fuel cell and which is useful as a base material excellent in gas diffusibility and drainage performance. The present invention provides a carbon fiber nonwoven fabric on a surface of which a plurality of non-through pores each having an opening area larger than the average pore area of the carbon fiber nonwoven fabric are dispersively formed, the carbon fiber nonwoven fabric having no broken fibers observed on the peripheral edge portions of the non-through pores in plane view.

Abstract translation: 本发明的目的是提供一种作为固体高分子型燃料电池的电极基材具有优异的导电性和导热性的碳纤维无纺布，其可用作气体扩散性和排水性能优异的基材。 本发明提供一种碳纤维无纺布，其表面上分散形成开口面积大于碳纤维非织造布的平均孔面积的多个非贯通孔，碳纤维无纺布不破裂 在平面图中在非贯通孔的周边部分上观察到的纤维。

公开(公告)号：US20180294487A1

公开(公告)日：2018-10-11

申请号：US15575729

申请日：2016-07-04

Applicant: TORAY INDUSTRIES, INC.

Inventor： Ayanobu HORINOUCHI ,  Kentaro KAJIWARA ,  Satoru SHIMOYAMA ,  Tomoyuki HORIGUCHI

IPC: H01M8/026 ,  H01M4/96

Abstract: An object of the present invention is to provide a polymer electrolyte fuel cell including a grooved gas diffusion electrode, which has good water discharge performance and can exhibit high power generation performance even under particularly humid power generation conditions and in a case where a parallel separator is used. The present invention provides a polymer electrolyte fuel cell including a gas diffusion electrode a substrate of which is a carbon fiber nonwoven fabric, and a separator having parallel linear channels formed thereon, wherein the carbon fiber nonwoven fabric has corrugated plate-like irregularities in which linear ridges and linear grooves are alternately repeated, and the ridges and the grooves have light permeability at an equal level, and the gas diffusion electrode and the separator are arranged so that a surface of the carbon fiber nonwoven fabric having the irregularities thereon faces a surface of the separator having the channels thereon, and extending directions of the ridges and the grooves coincide with an extending direction of the channels in the separator.

公开(公告)号：US20170244113A1

公开(公告)日：2017-08-24

申请号：US15521831

申请日：2015-11-20

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kentaro KAJIWARA ,  Satoru SHIMOYAMA ,  Ayanobu HORINOUCHI ,  Tomoyuki HORIGUCHI

IPC: H01M4/96 ,  H01M8/1018 ,  H01M8/0247 ,  D04H1/4242 ,  H01M4/88

CPC classification number: H01M4/96 ,  D04H1/4242 ,  H01M4/88 ,  H01M8/0234 ,  H01M8/0245 ,  H01M8/0247 ,  H01M8/026 ,  H01M8/1018 ,  H01M2008/1095 ,  H01M2300/0082

Abstract: An object of the present invention is to provide a nonwoven carbon fiber fabric suitable as a gas diffusion electrode, which achieves good water discharge performance and maintains high gas diffusibility even when electricity is generated in humid conditions. The present invention provides a nonwoven carbon fiber fabric which has ridges on at least one surface thereof and which is provided with a water repellent, the ridges having a pitch that is less than 500 μm.

公开(公告)号：US20150318558A1

公开(公告)日：2015-11-05

申请号：US14439954

申请日：2013-11-27

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kentaro KAJIWARA ,  Satoru SHIMOYAMA ,  Tomoyuki HORIGUCHI

IPC: H01M4/86 ,  H01M4/88 ,  B32B5/02 ,  B32B5/26 ,  B32B5/06 ,  H01M8/10 ,  D04H1/4242

CPC classification number: H01M4/8626 ,  B32B5/022 ,  B32B5/06 ,  B32B5/26 ,  B32B2262/106 ,  B32B2307/72 ,  B32B2457/18 ,  D01F9/14 ,  D04H1/4242 ,  D10B2101/08 ,  H01M4/8807 ,  H01M4/8817 ,  H01M4/8875 ,  H01M4/96 ,  H01M8/1018 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y10T156/1054

Abstract: Provided is a carbon-fiber nonwoven cloth with low resistance to gases or liquids passing through, and low resistance in the thickness direction to heat or electricity, which is particularly appropriate for a gas diffusion electrode of a polymer electrolyte fuel cell; the cloth having an air gap with a diameter of at least 20 μm, at least some of the carbon fibers being continuous from one surface to the other surface, and the apparent density being 0.2-1.0 g/cm3, or, having an air gap with a diameter of at least 20 μm and at least some of the carbon fibers being mutually interlaced, and further, at least some of the carbon fibers being oriented toward the thickness direction and the apparent density being 0.2-1.0 g/cm3.

Abstract translation: 本发明提供一种对通过的气体或液体的耐低电阻，对热或电的厚度方向的低电阻的碳纤维无纺布，其特别适用于固体高分子型燃料电池的气体扩散电极; 所述布具有至少20μm的直径的气隙，所述碳纤维中的至少一些从一个表面连续到另一个表面，并且表观密度为0.2-1.0g / cm 3，或者具有气隙 直径至少为20μm，并且至少一些碳纤维相互交织，此外，至少一些碳纤维朝向厚度方向取向，表观密度为0.2-1.0g / cm 3。