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公开(公告)号：US20190198906A1
公开(公告)日：2019-06-27
申请号：US16331666
申请日：2017-09-05
Inventor： Motohiro SAKATA , Takeshi MINAMIURA , Shinichiro IMURA , Hitoshi ISHIMOTO , Kazuya YAMASAKI , Chiho NOBUMORI , Yukihiro SHIMASAKI , Tsutomu FUJII
IPC: H01M8/22 , H01M8/0245 , H01M4/66 , H01M8/0234 , H01M8/0239 , H01M8/24
CPC classification number: H01M8/225 , H01M4/663 , H01M4/667 , H01M4/86 , H01M8/0234 , H01M8/0239 , H01M8/0245 , H01M8/10 , H01M8/24
Abstract: Provided is a fuel cell catalyst layer including: a fibrous carbon material; catalyst particles; a particulate carbon material; and a proton-conductive resin, wherein a region A including at least the fibrous carbon material in a state of an agglomerated body and a region B including at least the catalyst particles, the particulate carbon material, and the proton-conductive resin are formed, the region A being disposed in an island form in the region B.
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公开(公告)号：US20240153713A1
公开(公告)日：2024-05-09
申请号：US18549507
申请日：2022-03-10
Inventor： Takeshi MINAMIURA , Masayuki HOGIRI , Norihiko OGATA , Kazuhide GOTOU , Yuma YANO , Yukiyasu SUGIHARA
Abstract: An electrolytic capacitor including a capacitor element that includes an anode body being porous and including an anode substrate body and a dielectric layer formed on a surface of the anode substrate body, and a solid electrolyte layer covering at least part of the dielectric layer. The anode body has a plurality of principal faces. A surface of the anode body has a first region and a second region different from the first region, and the first region does not include a corner portion where a plurality of the principal faces meet. A surface roughness in the first region is greater than a surface roughness in the second region.
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公开(公告)号：US20220336834A1
公开(公告)日：2022-10-20
申请号：US17849000
申请日：2022-06-24
Inventor： Takeshi MINAMIURA , Kenichi EZAKI , Shinichiro IMURA , Tsutomu KAWASHIMA , Miyuki YOSHIMOTO
IPC: H01M8/1004 , H01M8/0263 , H01M8/026 , H01M4/86 , H01M4/90
Abstract: A membrane electrode assembly for a fuel cell, the membrane electrode assembly including an electrolyte membrane, and a first electrode and a second electrode sandwiching the electrolyte membrane, wherein the first electrode includes a first catalyst layer and a first gas diffusion layer in order from the electrolyte membrane side, the first gas diffusion layer includes a first fibrous conductive member and a first resin material, the first catalyst layer includes a second fibrous conductive member, catalyst particles, and a second resin material, when viewed from a stacking direction of the membrane electrode assembly, a first angle formed by the first fibrous conductive member and a main flow path of a gas supplied to the membrane electrode assembly is arbitrary, and a second angle formed by the second fibrous conductive member and the main flow path is 45° or less.
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公开(公告)号：US20220359899A1
公开(公告)日：2022-11-10
申请号：US17849346
申请日：2022-06-24
Inventor： Shinichiro IMURA , Takeshi MINAMIURA , Kenichi EZAKI , Tsutomu KAWASHIMA , Miyuki YOSHIMOTO
IPC: H01M8/1004 , H01M4/88 , H01M4/96
Abstract: A membrane electrode assembly for a fuel cell includes a catalyst layer having a first main surface and a second main surface, a gas diffusion layer disposed on a side of the first main surface, and an electrolyte membrane disposed on a side of the second main surface, wherein the gas diffusion layer includes a conductive material and a polymer resin, the conductive material comprises a fibrous carbon material, an average fiber diameter D of the fibrous carbon material is equal to or less than 25% of a thickness T of the catalyst layer, and in a cross section in a thickness direction of the catalyst layer, an arithmetic mean roughness Ra1 of the first main surface and an arithmetic mean roughness Ra2 of the second main surface satisfies the relation, Ra1>Ra2.
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Patent Agency Ranking
公开(公告)号：US20210098797A1
公开(公告)日：2021-04-01
申请号：US17044654
申请日：2019-07-18
Inventor： Shinichiro IMURA , Takeshi MINAMIURA , Hitoshi ISHIMOTO
IPC: H01M4/92 , H01M4/86 , H01M8/10 , H01M8/1018
Abstract: A cathode catalyst layer of fuel cells, the cathode catalyst layer including a first fibrous electrically-conductive member, a first particulate electrically-conductive member, first catalyst particles, and a first proton conductive resin, A ratio I1/C1 of a mass of the first proton conductive resin to a mass of the first electrically particulate conductive member is in a range of 1.0 to 1.6. A ratio of the first fibrous electrically-conductive member to 100 parts by mass of the first particulate conductive member is 30 to 50 parts by mass. The first proton conductive resin has an EW value of 600 to 850.
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公开(公告)号：US20220149409A1
公开(公告)日：2022-05-12
申请号：US17599991
申请日：2020-03-05
Inventor： Hitoshi ISHIMOTO , Takeshi MINAMIURA , Shinichiro IMURA , Yoshifumi TAGUCHI , Tsutomu KAWASHIMA
IPC: H01M8/1004 , H01M4/86
Abstract: A membrane-electrode assembly includes an electrolyte membrane, a pair of catalyst layers stacked on surfaces of the electrolyte membrane, and a pair of gas diffusion layers stacked on a side opposite to the electrolyte membrane of one of the pair of catalyst layers and on a side opposite to the electrolyte membrane of the other one of the catalyst layers. One of the pair of catalyst layers contains catalyst particles and a first conductive material. One of the pair of gas diffusion layers in contact with the one of the catalyst layers contains a second conductive material. The first conductive material includes a first particulate conductive member and a first fibrous conductive member, and the second conductive material includes a second fibrous conductive member. The content K2 by mass of the second fibrous conductive member is larger than the content K1 by mass of the first fibrous conductive member.
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公开(公告)号：US20210075024A1
公开(公告)日：2021-03-11
申请号：US16957450
申请日：2018-12-26
Inventor： Takeshi MINAMIURA , Hitoshi ISHIMOTO , Shinichiro IMURA , Kazuya YAMASAKI , Yukihiro SHIMASAKI
IPC: H01M4/90 , H01M8/1004 , H01M8/0258 , H01M4/88
Abstract: The preset disclosure provides a catalyst layer that has a small contact resistance with a gas diffusion layer and excellent gas diffusion properties. The catalyst layer for a fuel cell has a uniform thickness and includes fibrous conductive members and catalyst particles. The fibrous conductive members are inclined relative to a surface direction of the catalyst layer, and a lengthwise direction of the fibrous conductive members, on average, matches a first direction.
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公开(公告)号：US20230411086A1
公开(公告)日：2023-12-21
申请号：US18365715
申请日：2023-08-04
Inventor： Yukiyasu SUGIHARA , Norihiko OGATA , Kazuhide GOTOU , Yuma YANO , Yuki UEDA , Takeshi MINAMIURA , Masayuki HOGIRI
CPC classification number: H01G9/0525 , H01G9/0032 , H01G9/15
Abstract: An electrolytic capacitor includes an anode body having a porous structure, an anode lead partially embedded in the anode body, a dielectric layer formed on a surface of the anode body, and a cathode part that covers at least part of the dielectric layer. The anode body has a first region in which first particles sintered together and a second region in which second particles sintered together. The average particle diameter D1 of the first particles is smaller than the average particle diameter D2 of the second particles. The volume-based pore diameter distribution of the anode body with the dielectric layer has a first peak in a range of less than or equal to 0.5 μm in pore diameter, and a second peak in a range of more than 0.5 μm in pore diameter.
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公开(公告)号：US20200335797A1
公开(公告)日：2020-10-22
申请号：US16957192
申请日：2018-12-26
Inventor： Hitoshi ISHIMOTO , Kazuya YAMASAKI , Shinichiro IMURA , Takeshi MINAMIURA , Yukihiro SHIMASAKI , Kenichi EZAKI
IPC: H01M4/86 , H01M4/92 , H01M4/88 , H01M8/1004
Abstract: Disclosed is a catalyst layer for a fuel cell that has good gas diffusion properties in the entire catalyst layer and in which coarsening of catalyst particles can be suppressed. The catalyst layer for a fuel cell includes fibrous conductive members and catalyst particles. The fibrous conductive members are inclined relative to the surface direction of the catalyst layer, and the length L of the fibrous conductive members and the thickness T of the catalyst layer satisfy the relational expression: L/T≤3. Each of the catalyst particles includes a core portion and a shell portion that covers the core portion, and contains a component different from that of the core portion.
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