Patents by Inventor Hiromasa Tawarayama
Hiromasa Tawarayama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20200266451Abstract: A solid-oxide-electrolysis-cell-type hydrogen production apparatus includes a cell structure including a first electrode, a second electrode, and an electrolyte layer, a gas diffusion layer disposed adjacent to the first electrode, and a gas channel plate disposed adjacent to the gas diffusion layer, in which the gas diffusion layer is formed of a porous metal body having a three-dimensional mesh-like skeleton, the gas channel plate includes a first region including a first channel, a second region including a second channel, and a third region including a third channel, the first channel includes a slit extending from the center of the gas channel plate toward its outer edge at the boundary surface between the first region and the second region, letting the total area of the first channel at the boundary surface be a first opening area S1, letting the total area of the second channel at the boundary surface between the second region and the third region be a second opening area S2, and letting the total areaType: ApplicationFiled: May 7, 2020Publication date: August 20, 2020Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro HIRAIWA, Takahiro HIGASHINO, Hiromasa TAWARAYAMA, Masatoshi MAJIMA, Toshihiro YOSHIDA, Kazunari MIYAMOTO
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Patent number: 10734665Abstract: A method for producing a cell structure includes: a step of firing a laminated body of a layer containing an anode material and a layer containing a solid electrolyte material, to obtain a joined body of an anode and a solid electrolyte layer; a step of laminating a layer containing a cathode material on a surface of the solid electrolyte layer, and firing the obtained laminated body to obtain a cathode. The anode material contains a metal oxide Ma1 and a nickel compound. The metal oxide Ma1 is a metal oxide having a perovskite structure represented by A1x1B11-y1M1y1O3-? (wherein: A1 is at least one of Ba, Ca, and Sr; B1 is at least one of Ce and Zr; M1 is at least one of Y, Yb, Er, Ho, Tm, Gd, In, and Sc; 0.85?x1?0.99; 0<y1?0.5; and ? is an oxygen deficiency amount).Type: GrantFiled: August 5, 2016Date of Patent: August 4, 2020Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., KYOTO UNIVERSITYInventors: Takahiro Higashino, Kazunari Miyamoto, Yohei Noda, Chihiro Hiraiwa, Naho Mizuhara, Hiromasa Tawarayama, Hisao Takeuchi, Masatoshi Majima, Tetsuya Uda, Donglin Han
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Patent number: 10693143Abstract: A fuel cell includes a cell structure including a first electrode, a second electrode, and an electrolyte layer, a gas diffusion layer disposed adjacent to the first electrode, and a gas channel plate disposed adjacent to the gas diffusion layer, in which the gas diffusion layer is formed of a porous metal body having a three-dimensional mesh-like skeleton, the gas channel plate includes a first region including a first channel, a second region including a second channel, and a third region including a third channel, the first channel includes a slit extending from the center of the gas channel plate toward its outer edge at the boundary surface between the first region and the second region, letting the total area of the first channel at the boundary surface be a first opening area S1, letting the total area of the second channel at the boundary surface between the second region and the third region be a second opening area S2, and letting the total area of the third channel at the boundary surface between tType: GrantFiled: January 23, 2017Date of Patent: June 23, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Takahiro Higashino, Hiromasa Tawarayama, Masatoshi Majima, Toshihiro Yoshida, Kazunari Miyamoto
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Patent number: 10573904Abstract: A fuel cell includes a MEA that includes a cathode, an anode, and a solid electrolyte layer disposed between the cathode and the anode, the solid electrolyte layer containing an ion-conducting solid oxide; at least one first porous metal body adjacent to at least one of the cathode and the anode and having a three-dimensional mesh-like skeleton; a second porous metal body stacked to be adjacent to the first porous metal body and having a three-dimensional mesh-like skeleton; and an interconnector adjacent to the second porous metal body. The first porous metal body has a pore size smaller than a pore size of the second porous metal body.Type: GrantFiled: July 8, 2016Date of Patent: February 25, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Masatoshi Majima, Hiromasa Tawarayama, Naho Mizuhara, Takahiro Higashino, Yohei Noda, Kazunari Miyamoto, Toshihiro Yoshida
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Publication number: 20200040471Abstract: The present invention provides an oxide-dispersed metal porous body including a porous metal framework, and oxide particles carried in the metal framework.Type: ApplicationFiled: April 23, 2018Publication date: February 6, 2020Applicants: Sumitomo Electric Industries, Ltd., National University Corporation YOKOHAMA National UniversityInventors: Kazuki OKUNO, Masatoshi MAJIMA, Takahiro HIGASHINO, Hiromasa TAWARAYAMA, Shigenori MITSUSHIMA
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Patent number: 10553880Abstract: A fuel cell includes a MEA that includes a cathode, an anode, and a solid electrolyte layer disposed between the cathode and the anode, the solid electrolyte layer containing an ion-conducting solid oxide; at least one first porous metal body arranged to oppose at least one of the cathode and the anode; and an interconnector arranged to oppose the first porous metal body and having a gas supply port and a gas discharge port formed therein. The first porous metal body includes a porous metal body S that opposes the gas supply port and has a three-dimensional mesh-like skeleton, and a porous metal body H that has a three-dimensional mesh-like skeleton and is other than the porous metal body S. A porosity Ps of the porous metal body S and a porosity Ph of the porous metal body H satisfy a relationship: Ps<Ph.Type: GrantFiled: July 8, 2016Date of Patent: February 4, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Masatoshi Majima, Hiromasa Tawarayama, Naho Mizuhara, Takahiro Higashino, Yohei Noda, Kazunari Miyamoto, Toshihiro Yoshida
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Publication number: 20200036011Abstract: The metal porous body according to one aspect of the present invention has a framework of a three-dimensional network structure. The framework is hollow inside and is formed of a metal film, and the metal film contains titanium metal or titanium alloy as the main component.Type: ApplicationFiled: March 13, 2018Publication date: January 30, 2020Applicant: Sumitomo Electric Industries, Ltd.Inventors: Koma NUMATA, Masatoshi MAJIMA, Tomoyuki AWAZU, Mitsuyasu OGAWA, Takahiro HIGASHINO, Hiromasa TAWARAYAMA
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Patent number: 10505196Abstract: In an SOFC, a solid electrolyte layer and an anode are integrated with each other to provide an electrolyte layer-anode assembly. The anode contains a nickel element and a first proton conductor. The first proton conductor is composed of a first perovskite oxide having proton conductivity. The first perovskite oxide has an AXO3-type crystal structure, the A-site containing Ba, the X-site containing Y and at least one selected from the group consisting of Zr and Ce. The nickel element is at least partially in the form of NiO. The anode has a porosity Pa of 10% or more by volume when INi/INiO?0.1, where INi/INiO denotes a relative intensity ratio of the peak intensity INi of metallic Ni to the peak intensity INiO of the NiO in an XRD spectrum of the anode.Type: GrantFiled: July 15, 2016Date of Patent: December 10, 2019Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Naho Mizuhara, Masatoshi Majima, Hiromasa Tawarayama, Chihiro Hiraiwa, Takahiro Higashino, Yohei Noda, Kazunari Miyamoto
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Publication number: 20190366275Abstract: There is provided a method of producing a separation membrane in which a zeolite membrane is formed on an inorganic oxide porous substrate. The substrate has amorphous SiO2 as a main component of a zeolite formation portion of the substrate, the method includes: a first step of forming a zeolite seed crystal and an alkaline component including a structure directing agent on a surface of the substrate; and a second step of treating a formed product obtained in the first step under a heated steam atmosphere, and the zeolite membrane is formed on the surface of the substrate.Type: ApplicationFiled: January 15, 2018Publication date: December 5, 2019Applicants: Sumitomo Electric Industries, Ltd., Gifu UniversityInventors: Shinji ISHIKAWA, Hiromasa TAWARAYAMA, Takuya OKUNO, Takahiro SAITO, Yasunori OUMI, Kyohei UENO
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Publication number: 20190366276Abstract: There is provided a zeolite membrane which is an MFI-type zeolite membrane formed on an inorganic oxide porous substrate, in which, in a diffraction pattern obtained by X-ray diffraction measurement using a CuK? ray as an X-ray source, when an intensity of a diffraction peak appearing at diffraction angles of 7.3° to 8.4° at which a crystal lattice plane belongs to 011 and/or 101 planes is used as a reference, an intensity of a diffraction peak appearing at diffraction angles of 8.4° to 9.0° at which a crystal lattice plane belongs to 200 and/or 020 planes is preferably 0.3 or more.Type: ApplicationFiled: January 16, 2018Publication date: December 5, 2019Applicants: Sumitomo Electric Industries, Ltd., Gifu UniversityInventors: Shinji ISHIKAWA, Hiromasa TAWARAYAMA, Takuya OKUNO, Takahiro SAITO, Yasunori OUMI, Kyohei UENO
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Patent number: 10431840Abstract: Provided are a membrane electrode assembly, including a solid electrolyte layer, an anode layer provided on one side of the solid electrolyte layer, and a cathode layer provided on the other side of the solid electrolyte layer, the anode layer being stacked on the solid electrolyte layer to be pressed thereagainst, the anode layer including a porous anode member having electrical conductivity; and a method for manufacturing the same.Type: GrantFiled: June 23, 2015Date of Patent: October 1, 2019Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Chihiro Hiraiwa, Masatoshi Majima, Hiromasa Tawarayama, Takahiro Higashino, Yohei Noda, Naho Mizuhara, Tatsumi Ishihara
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Patent number: 10424801Abstract: A cell structure includes a cathode, an anode, and a protonically conductive solid electrolyte layer between the cathode and the anode. The solid electrolyte layer contains a compound having a perovskite structure and containing zirconium, cerium, and a rare-earth element other than cerium. If the solid electrolyte layer has a thickness of T, the elemental ratio of zirconium to cerium at a position 0.25 T from a surface of the solid electrolyte layer opposite the cathode, ZrC/CeC, and the elemental ratio of zirconium to cerium at a position 0.25 T from a surface of the solid electrolyte layer opposite the anode, ZrA/CeA, satisfy ZrC/CeC>ZrA/CeA, and ZrC/CeC>1.Type: GrantFiled: October 20, 2015Date of Patent: September 24, 2019Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takahiro Higashino, Yohei Noda, Chihiro Hiraiwa, Naho Mizuhara, Hiromasa Tawarayama, Hisao Takeuchi, Masatoshi Majima
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Patent number: 10374243Abstract: Provided is a porous current collector which is used for a fuel electrode and has a high gas reforming function and high durability. A porous current collector 9 is provided adjacent to a fuel electrode 4 of a fuel cell 101 that includes a solid electrolyte layer 2, the fuel electrode 4 disposed on one side of the solid electrolyte layer, and an air electrode 3 disposed on the other side. The porous current collector includes a porous metal body 1 and a first catalyst 20. The porous metal body has an alloy layer 12a at least on a surface thereof, the alloy layer containing nickel (Ni) and tin (Sn). The first catalyst, which is in the form of particles, is supported on a surface of the alloy layer, the surface facing pores of the porous metal body, and is capable of processing a carbon component contained in a fuel gas that flows inside the pores.Type: GrantFiled: February 23, 2015Date of Patent: August 6, 2019Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takahiro Higashino, Masatoshi Majima, Hiromasa Tawarayama, Naho Mizuhara, Kazuki Okuno, Chihiro Hiraiwa, Yohei Noda, Masahiro Kato
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Publication number: 20190036131Abstract: Provided is a solid oxide fuel cell including a flat-plate-shaped cell structure including a cathode, an anode, and an electrolyte layer containing a solid oxide, a frame-shaped sealing member disposed so as to surround a periphery of the cathode, the sealing member having a larger outside diameter than the cathode, a first pressing member and a second pressing member that hold the sealing member therebetween, and a flat-plate-shaped cathode current collector adjacent to the cathode, the flat-plate-shaped cathode current collector being formed of a porous metal body having a three-dimensional mesh-like skeleton, in which the cathode current collector has a peripheral portion that is not opposite the anode, the outer edge portion of a main surface of the sealing member adjacent to the anode faces the first pressing member, the inner edge portion of the main surface of the sealing member adjacent to the anode faces the peripheral portion of the electrolyte layer, the outer edge portion of a main surface of theType: ApplicationFiled: January 23, 2017Publication date: January 31, 2019Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro HIRAIWA, Masatoshi MAJIMA, Takahiro HIGASHINO, Hiromasa TAWARAYAMA, Kazunari MIYAMOTO
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Patent number: 10193161Abstract: A method for producing an anode capable of increasing output of a solid oxide fuel cell is provided. The method for producing an anode for a solid oxide fuel cell includes a first step of shaping a mixture that contains a perovskite oxide having proton conductivity and a nickel compound and a second step of firing a shaped product, which has been obtained in the first step, in an atmosphere containing 50% by volume or more of oxygen at 1100° C. to 1350° C. so as to generate an anode.Type: GrantFiled: July 21, 2015Date of Patent: January 29, 2019Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yohei Noda, Masatoshi Majima, Hiromasa Tawarayama, Naho Mizuhara, Chihiro Hiraiwa, Takahiro Higashino
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Publication number: 20190006681Abstract: A fuel cell includes a cell structure including a first electrode, a second electrode, and an electrolyte layer, a gas diffusion layer disposed adjacent to the first electrode, and a gas channel plate disposed adjacent to the gas diffusion layer, in which the gas diffusion layer is formed of a porous metal body having a three-dimensional mesh-like skeleton, the gas channel plate includes a first region including a first channel, a second region including a second channel, and a third region including a third channel, the first channel includes a slit extending from the center of the gas channel plate toward its outer edge at the boundary surface between the first region and the second region, letting the total area of the first channel at the boundary surface be a first opening area S1, letting the total area of the second channel at the boundary surface between the second region and the third region be a second opening area S2, and letting the total area of the third channel at the boundary surface between tType: ApplicationFiled: January 23, 2017Publication date: January 3, 2019Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro HIRAIWA, Takahiro HIGASHINO, Hiromasa TAWARAYAMA, Masatoshi MAJIMA, Toshihiro YOSHIDA, Kazunari MIYAMOTO
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Publication number: 20190006680Abstract: In an SOFC, a solid electrolyte layer and an anode are integrated with each other to provide an electrolyte layer-anode assembly. The anode contains a nickel element and a first proton conductor. The first proton conductor is composed of a first perovskite oxide having proton conductivity. The first perovskite oxide has an AXO3-type crystal structure, the A-site containing Ba, the X-site containing Y and at least one selected from the group consisting of Zr and Ce. The nickel element is at least partially in the form of NiO. The anode has a porosity Pa of 10% or more by volume when INi/INiO?0.1, where INi/INiO denotes a relative intensity ratio of the peak intensity INi of metallic Ni to the peak intensity INiO of the NiO in an XRD spectrum of the anode.Type: ApplicationFiled: July 15, 2016Publication date: January 3, 2019Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Naho MIZUHARA, Masatoshi MAJIMA, Hiromasa TAWARAYAMA, Chihiro HIRAIWA, Takahiro HIGASHINO, Yohei NODA, Kazunari MIYAMOTO
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Publication number: 20190006692Abstract: A method for producing a cell structure includes: a step of firing a laminated body of a layer containing an anode material and a layer containing a solid electrolyte material, to obtain a joined body of an anode and a solid electrolyte layer; a step of laminating a layer containing a cathode material on a surface of the solid electrolyte layer, and firing the obtained laminated body to obtain a cathode. The anode material contains a metal oxide Ma1 and a nickel compound. The metal oxide Ma1 is a metal oxide having a perovskite structure represented by A1x1B11-y1M1y1O3-? (wherein: A1 is at least one of Ba, Ca, and Sr; B1 is at least one of Ce and Zr; M1 is at least one of Y, Yb, Er, Ho, Tm, Gd, In, and Sc; 0.85?x1?0.99; 0<y1?0.5; and ? is an oxygen deficiency amount).Type: ApplicationFiled: August 5, 2016Publication date: January 3, 2019Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., KYOTO UNIVERSITYInventors: Takahiro HIGASHINO, Kazunari MIYAMOTO, Yohei NODA, Chihiro HIRAIWA, Naho MIZUHARA, Hiromasa TAWARAYAMA, Hisao TAKEUCHI, Masatoshi MAJIMA, Tetsuya UDA, Donglin HAN
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Publication number: 20180375114Abstract: A proton conductor contains a metal oxide having a perovskite structure and represented by AaBbMcO3-? (wherein: A is at least one of Ba, Ca, and Sr; B is at least one of Ce and Zr; M is at least one of Y, Yb, Er, Ho, Tm, Gd, and Sc; 0.85?a?1; 0.5?b<1; c=1-b; and ? is an oxygen deficiency amount), and a standard deviation in a triangular diagram representing an atomic composition ratio of the A, the B, and the M is not greater than 0.04.Type: ApplicationFiled: December 16, 2016Publication date: December 27, 2018Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., KYOTO UNIVERSITYInventors: Takahiro HIGASHINO, Yohei NODA, Kazunari MIYAMOTO, Chihiro HIRAIWA, Naho MIZUHARA, Hiromasa TAWARAYAMA, Hisao TAKEUCHI, Masatoshi MAJIMA, Tetsuya UDA, Donglin HAN, Takayuki ONISHI, Yuki OTANI
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Patent number: 10109866Abstract: A gas decomposition device 100 includes one or two or more membrane electrode assemblies 5, each including a solid electrolyte layer 2, an anode layer 3 stacked on a first side of the solid electrolyte layer 2, and a cathode layer 4 stacked on a second side of the solid electrolyte layer; and porous current collectors 8a, 8b, and 8c including continuous pores 1b, the membrane electrode assemblies being stacked with the porous current collector, the solid electrolyte layer being composed of a proton-conducting solid electrolyte, the porous current collectors including porous metal bodies 1, each of the porous metal bodies 1 including an alloy layer 12a having corrosion resistance on at least a surface of the porous metal body 1 facing the continuous pores, and the porous metal bodies forming gas channels 9a, 9b, and 9c that supply gases to the anode layer and the cathode layer.Type: GrantFiled: May 15, 2015Date of Patent: October 23, 2018Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Masatoshi Majima, Hiromasa Tawarayama, Naho Mizuhara, Takahiro Higashino, Yohei Noda