公开(公告)号：US20210135247A1

公开(公告)日：2021-05-06

申请号：US17082896

申请日：2020-10-28

Applicant: TOPPAN PRINTING CO., LTD. ,  HIROSAKI UNIVERSITY

Inventor： Hiroyuki MORIOKA ,  Madoka OZAWA ,  Mitsuharu CHISAKA

IPC: H01M4/90 ,  H01M4/92 ,  H01M4/86 ,  H01M8/1004

Abstract: Provided is a catalyst for fuel cells including an oxygen atom, a nitrogen atom, a pentavalent phosphorus atom, and a transition metal atom, in which when the transition metal atom is represented by M, the catalyst for fuel cells is represented by a chemical formula MOxNyPz, and the transition metal atom is at least one selected from the group consisting of a titanium atom, a tantalum atom, a niobium atom, and a zirconium atom.

公开(公告)号：US20140363756A1

公开(公告)日：2014-12-11

申请号：US14465629

申请日：2014-08-21

Applicant: Toppan Printing Co., Ltd.

Inventor： Madoka OZAWA

IPC: H01M8/10 ,  H01M4/90

CPC classification number: H01M8/1004 ,  H01M4/8605 ,  H01M4/8652 ,  H01M4/881 ,  H01M4/8814 ,  H01M4/8828 ,  H01M4/8882 ,  H01M4/9083 ,  H01M4/926 ,  H01M8/1023 ,  H01M8/1039 ,  H01M2008/1095 ,  H01M2250/20 ,  H01M2300/0082 ,  Y02E60/521 ,  Y02P70/56 ,  Y02T90/32

Abstract: A membrane electrode assembly for a polymer electrolyte fuel cell having higher power-generating characteristics in a high-temperature, low-humidity environment, and a polymer electrolyte fuel cell using the same. In this membrane electrode assembly for a polymer electrolyte fuel cell provided with electrode catalyst layers, which include at least a proton-exchange polymer and carbon-supported catalyst, on both surfaces of a polymer electrolyte membrane, the resistance (Ri) of the proton-exchange polymer of the electrode catalyst layers is at least about 2 Ωcm2 but not more than about 5 Ωcm2 under measurement conditions of 20% relative humidity and an AC impedance of 10 kHz to 100 kHz.

Abstract translation: 一种用于在高温低湿环境中具有较高发电特性的聚合物电解质燃料电池的膜电极组件，以及使用其的聚合物电解质燃料电池。 在该高分子电解质膜的两面具有电极催化剂层的聚合物电解质型燃料电池用膜电极组件中，所述电极催化剂层至少含有质子交换聚合物和碳负载型催化剂， 电极催化剂层的交换聚合物在20％相对湿度和10kHz至100kHz的AC阻抗的测量条件下为至少约2Ω-cm 2，但不大于约5Ω/ cm2。

公开(公告)号：US20210013524A1

公开(公告)日：2021-01-14

申请号：US17030663

申请日：2020-09-24

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Madoka OZAWA ,  Hiroyuki MICHI ,  Yuki IGARASHI ,  Katsuyuki KISHI

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

Abstract: A membrane electrode assembly includes a polyelectrolyte membrane having a first surface and a second surface facing away from the first surface; a fuel-electrode-side electrocatalyst layer bonded to the first surface and containing a first catalytic material, a first electrically conductive carrier, and a first polyelectrolyte, the first electrically conductive carrier carrying the first catalytic material; and an oxygen-electrode-side electrocatalyst layer bonded to the second surface and containing a second catalytic material, a second electrically conductive carrier, a second polyelectrolyte, and a fibrous material, the second electrically conductive carrier carrying the second catalytic material. The membrane electrode assembly contains voids, the voids including pores each having a size in a range of 3 nm or more and 5.5 μm or less.

公开(公告)号：US20210013518A1

公开(公告)日：2021-01-14

申请号：US17029662

申请日：2020-09-23

Applicant: TOPPAN PRINTING CO.,LTD.

Inventor： Madoka OZAWA

IPC: H01M4/86 ,  H01M8/1004

Abstract: A catalyst layer comprising an interface to a polyelectrolyte membrane, the catalyst layer includes a layer forming material, which includes a catalytic substance, a conductive carrier which supports the catalytic substance, a polyelectrolyte, and a fibrous material, and a plurality of pores which contain no layer forming material. A pore area ratio which is a total area ratio of the plurality of pores to an area of a cross-section orthogonal to the interface is 25.0% or more and 35.0% or less in a cross-sectional image captured by a scanning electron microscope.

公开(公告)号：US20140011116A1

公开(公告)日：2014-01-09

申请号：US14021734

申请日：2013-09-09

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Madoka OZAWA

IPC: H01M4/88 ,  H01M8/10

CPC classification number: H01M4/8828 ,  H01M4/881 ,  H01M4/8882 ,  H01M4/8896 ,  H01M8/10 ,  H01M2008/1095

Abstract: Coating of catalyst ink is applied to a surface of a transfer roll to form a catalyst layer. The catalyst layer formed on the transfer roll is pressed on an excess coating-solution removing roll having a recessed portion while the catalyst layer is in semi-dry state to transfer and remove an excess catalyst layer from the transfer roll to a protruded portion of the excess coating-solution removing roll. The recessed portion has a same shape or a substantially same shape as a target pattern. A semi-dry catalyst layer having a target shape and remaining on the transfer roll is pressed on a polymer electrolyte membrane to bring the semi-dry catalyst layer into intimate contact with a surface of the polymer electrolyte membrane. The polymer electrolyte membrane having each side on which the semi-dry catalyst layer has been formed is dried.

Abstract translation: 将催化剂油墨的涂布施加到转印辊的表面以形成催化剂层。 形成在转印辊上的催化剂层在具有凹部的多余的涂布溶液除去辊上被挤压，同时催化剂层处于半干燥状态，以将过量的催化剂层从转移辊转移到除去辊的突出部分 过量的涂布溶液去除辊。 凹部具有与目标图案相同的形状或大致相同的形状。 将具有目标形状并保留在转印辊上的半干催化剂层压在聚合物电解质膜上，使半干催化剂层与聚合物电解质膜的表面紧密接触。 将形成有半干燥催化剂层的各侧的高分子电解质膜干燥。

公开(公告)号：US20220006099A1

公开(公告)日：2022-01-06

申请号：US17478485

申请日：2021-09-17

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Hiroaki KOYAMA ,  Madoka OZAWA

IPC: H01M4/86 ,  H01M4/90 ,  H01M8/1018 ,  H01M8/1004

Abstract: A catalyst layer for polymer electrolyte fuel cells that improves drainage or gas diffusion, reduces or prevents the occurrence of cracking in a catalyst layer, enhances catalyst utilization efficiency, exerts high output power and high energy conversion efficiency, and has high durability, and also provides a membrane-electrode assembly and a polymer electrolyte fuel cell using the catalyst layer. The catalyst layer for polymer electrolyte fuel cells contains a catalyst, carbon particles, a polymer electrolyte, and a fibrous material. In the catalyst layer, the carbon particles carry the catalyst1. The catalyst layer for polymer electrolyte fuel cells has voids. The percentage of frequencies of the voids having a cross-sectional area of 10,000 nm2 or more is 13% or more and 20% or less among the voids observed in a thickness-direction cross section of the catalyst layer for polymer electrolyte fuel cells perpendicular to the surface thereof.

公开(公告)号：US20190393528A1

公开(公告)日：2019-12-26

申请号：US16465114

申请日：2018-10-29

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Madoka OZAWA

IPC: H01M8/102 ,  H01M4/96 ,  H01M4/88

Abstract: Provided are an electrode catalyst layer, a membrane electrode assembly and a polymer electrolyte fuel cell, having sufficient drainage property and gas diffusibility with high power generation performance over a long term. An electrode catalyst layer (10) bonded to a surface of a polymer electrolyte membrane (11) includes at least a catalyst substance (12), a conductive carrier (13), a polymer electrolyte (14) and fibrous substances (15). The number of the fibrous substances (15) in which inclination θ of axes with respect to a surface of the electrode catalyst layer (10) bonded to the surface of the polymer electrolyte membrane (11) is 0° ≤θ