公开(公告)号：US11329294B2

公开(公告)日：2022-05-10

申请号：US16128635

申请日：2018-09-12

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yoshihiko Nakano ,  Norihiro Yoshinaga ,  Wu Mei ,  Taishi Fukazawa

IPC: H01M4/88 ,  H01M4/92 ,  H01M8/1004 ,  H01M8/241 ,  C25B13/08 ,  C25B1/04 ,  C25B9/73 ,  H01M8/1041

Abstract: A laminated electrolyte membrane of an embodiment includes: a first electrolyte membrane; a second electrolyte membrane; and a nanosheet laminated catalyst layer provided between the first electrolyte membrane and the second electrolyte membrane and including a laminated structure in which a plurality of nanosheet catalysts is laminated with a gap.

公开(公告)号：US11223051B2

公开(公告)日：2022-01-11

申请号：US16800997

申请日：2020-02-25

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yuta Kanai ,  Norihiro Yoshinaga ,  Taishi Fukazawa ,  Wu Mei

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

Abstract: According to an embodiment, a laminated catalyst includes a first catalyst layer mainly including a noble metal mainly containing Pt, a second catalyst layer mainly including a mixture of an oxide of a noble metal mainly containing Ir and Ru and a noble metal mainly containing Pt, and a third catalyst layer mainly including an oxide of a noble metal mainly containing Ir and Ru The first catalyst layer, the second catalyst layer, and the third catalyst layer are laminated in order.

公开(公告)号：US10535888B2

公开(公告)日：2020-01-14

申请号：US15706111

申请日：2017-09-15

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yoshihiko Nakano ,  Wu Mei ,  Taishi Fukazawa ,  Yuta Kanai ,  Hiroki Hiraga

IPC: H01M8/1004 ,  H01M8/241 ,  H01M4/86

Abstract: A membrane electrode assembly of an embodiment includes: a first electrode having a first base, and a first catalyst layer provided on the first base, the first catalyst layer including a plurality of first catalyst units with a laminated structure, and the laminated structure including void layers; and an electrolyte membrane being in direct contact with both first surfaces of the first catalyst units facing each other among the first catalyst units, and second surfaces of the first catalyst units on the opposite side from the first base side. A portion is included where the electrolyte membrane exists over a region being at least 80% of a thickness of the first catalyst layer from the second surfaces of the first catalyst units toward the first base.

公开(公告)号：US20180277871A1

公开(公告)日：2018-09-27

申请号：US15706111

申请日：2017-09-15

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yoshihiko Nakano ,  Wu Mei ,  Taishi Fukazawa ,  Yuta Kanai ,  Hiroki Hiraga

IPC: H01M8/1004 ,  H01M8/241 ,  H01M4/86

CPC classification number: H01M8/1004 ,  H01M4/8626 ,  H01M4/881 ,  H01M8/241 ,  H01M2250/20 ,  Y02E60/521 ,  Y02T90/32

Abstract: A membrane electrode assembly of an embodiment includes: a first electrode having a first base, and a first catalyst layer provided on the first base, the first catalyst layer including a plurality of first catalyst units with a laminated structure, and the laminated structure including void layers; and an electrolyte membrane being in direct contact with both first surfaces of the first catalyst units facing each other among the first catalyst units , and second surfaces of the first catalyst units on the opposite side from the first base side. A portion is included where the electrolyte membrane exists over a region being at least 80% of a thickness of the first catalyst layer from the second surfaces of the first catalyst units toward the first base.

公开(公告)号：US09777382B2

公开(公告)日：2017-10-03

申请号：US14729222

申请日：2015-06-03

Applicant: Kabushiki Kaisha Toshiba

Inventor： Norihiro Yoshinaga ,  Hiroaki Hirazawa ,  Yoshihiro Akasaka ,  Katsuyuki Naito ,  Taishi Fukazawa ,  Jun Tamura ,  Ryosuke Yagi

IPC: C25B9/08 ,  C25B11/03 ,  F25D17/04

CPC classification number: C25B9/08 ,  C25B11/035 ,  F25D17/042

Abstract: According to one embodiment, an electrochemical cell includes an anode, a cathode and an electrolytic membrane interposed therebetween. At least one of the anode and the cathode is formed of an integral solid conductive plate and includes a first surface in contact with the electrolytic membrane and a second surface apart from the first surface in a thickness direction. The at least one of the anode and the cathode includes a plurality of first pores opened in the first surface and a plurality of second pores opened in the second surface, the second pores communicating with a part of the first pores. The first pores are smaller than the second pores, and the concentration of pores in the first surface is higher than that in the second surface.

公开(公告)号：US10573897B2

公开(公告)日：2020-02-25

申请号：US14850250

申请日：2015-09-10

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Wu Mei ,  Shigeru Matake ,  Taishi Fukazawa ,  Yoshihiro Akasaka

IPC: H01M4/86 ,  H01M8/10 ,  H01M4/88 ,  H01M8/1004

Abstract: Embodiments of the present disclosure aim to provide a catalyst layer ensuring a high cell voltage and having both excellent robustness and sufficient endurance, and also to provide a process for producing the layer, a membrane electrode assembly and an electrochemical cell. The catalyst layer comprises two or more noble metal-containing layers, and a porous ceramic layer placed between the noble metal-containing layers. Further, in the catalyst layer, voids exist between the porous ceramic layer and the noble metal-containing layers.

公开(公告)号：US10249898B2

公开(公告)日：2019-04-02

申请号：US15241524

申请日：2016-08-19

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Wu Mei ,  Taishi Fukazawa ,  Tianyi Yang

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

Abstract: In one embodiment, a membrane electrode assembly comprises a catalyst layer being porous and containing a catalyst material, the catalyst layer comprising a plurality of catalyst units each having a porous body structure or a laminated structure containing a void layer, and an electrolyte membrane adjacent to the porous catalyst layer. The catalyst unit bites into the electrolyte membrane, and an average biting ratio is not less than 10%, and not more than 80% of a thickness of the catalyst layer.

公开(公告)号：US09865882B2

公开(公告)日：2018-01-09

申请号：US13850478

申请日：2013-03-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Wu Mei ,  Shigeru Matake ,  Taishi Fukazawa ,  Yoshihiro Akasaka ,  Katsuyuki Naito

IPC: H01M4/86 ,  H01M4/88 ,  H01M4/92 ,  H01M8/10 ,  H01M8/1018

CPC classification number: H01M4/8657 ,  H01M4/861 ,  H01M4/8871 ,  H01M4/92 ,  H01M8/10 ,  H01M2008/1095

Abstract: According to one embodiment, the noble metal catalyst layer includes first noble metal layer and a second noble metal layer formed on the first noble metal layer. The first noble metal layer includes a first noble metal element and has a porosity of 65 to 95 vol. %, a volume of pores having a diameter of 5 to 80 nm accounts for 50% or more of a volume of total pores in the first noble metal layer. The second noble metal layer includes a second noble metal element, and has an average thickness of 3 to 20 nm and a porosity of 50 vol. % or less.

公开(公告)号：US20160141631A1

公开(公告)日：2016-05-19

申请号：US15002734

申请日：2016-01-21

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Wu Mei ,  Shigeru Matake ,  Taishi Fukazawa ,  Yoshihiro Akasaka ,  Katsuyuki Naito

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

CPC classification number: H01M4/92 ,  H01M4/8605 ,  H01M8/1004 ,  H01M2008/1095 ,  Y02E60/50

Abstract: A method of manufacturing a membrane electrode assembly, including: forming a catalyst layer precursor containing a mixture of a catalyst material and a pore-forming material on a substrate having a flatness of 60% or more; removing the pore-forming material from the catalyst layer precursor on the substrate, thereby forming a catalyst layer containing the catalyst material and having a porosity of 20 to 90% by volume; transferring the catalyst layer from the substrate to a gas diffusion layer, to provide an electrode; and bonding the catalyst layer of the electrode to an electrolyte membrane, to provide a membrane electrode assembly.

Abstract translation: 一种制造膜电极组件的方法，包括：在平坦度为60％以上的基板上形成含有催化剂材料和成孔材料的混合物的催化剂层前体; 从基板上的催化剂层前体除去造孔材料，从而形成含有催化剂材料并具有20〜90体积％的孔隙率的催化剂层; 将催化剂层从衬底转移到气体扩散层，以提供电极; 并将电极的催化剂层粘合到电解质膜上，以提供膜电极组件。

公开(公告)号：US11094954B2

公开(公告)日：2021-08-17

申请号：US15907902

申请日：2018-02-28

Applicant: Kabushiki Kaisha Toshiba

Inventor： Taishi Fukazawa ,  Wu Mei ,  Yuta Kanai

IPC: H01M8/1004 ,  H01M8/242 ,  H01M8/04291 ,  H01M4/88 ,  H01M4/64 ,  H01M4/86 ,  H01M8/0245 ,  H01M8/1018

Abstract: An electrode of an embodiment includes a catalyst layer having pores. A mode diameter of the pores is 10 μm or more and 100 μm or less. The catalyst layer may have a thickness of 0.05 μm or more and 3.0 μm or less. A value of the mode diameter of the pores may three times or more a value of a thickness of the catalyst layer.