Patents by Inventor Ayano Kobayashi
Ayano Kobayashi 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: 20180316065Abstract: A main object of the present disclosure is to provide a stacked battery in which sneak current caused by an unevenness of a short circuit resistance among a plurality of cells, is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180316048Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180316066Abstract: A main object of the present disclosure is to provide a stacked battery in which the unevenness of short circuit resistance among a plurality of cells is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Patent number: 10056620Abstract: A solid oxide fuel cell includes a cathode, and an anode, and a solid electrolyte layer disposed between the cathode and the anode. The cathode includes a complex oxide having a perovskite structure expressed by the general formula ABO3. A standard deviation value for the atomic percentage of respective elements at the A site measured using energy dispersive X-ray spectroscopy at 10 spots in a single field on the sectional surface of the cathode is no more than 10.4.Type: GrantFiled: June 13, 2014Date of Patent: August 21, 2018Assignee: NGK INSULATORS, LTD.Inventors: Makoto Ohmori, Ayano Kobayashi, Shinji Fujisaki
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Patent number: 10033059Abstract: A fuel cell comprises an anode, a cathode, and a solid electrolyte layer. The solid electrolyte layer includes a first region disposed on the anode and a second region disposed between the first region and the cathode. The ratio of the ceria-based material in the first region is less than or equal to 0.5%. The ratio of the tetragonal crystal zirconia in the first region is greater than or equal to 3.0%. The atomic weight ratio of nickel to zirconia in the first region is less than or equal to 3.0 at %. The ratio of the ceria-based material in the second region is greater than or equal to 1.0%. The ratio of the tetragonal crystal zirconia in the second region is less than or equal to 0.1%.Type: GrantFiled: November 14, 2016Date of Patent: July 24, 2018Assignee: NGK INSULATORS, LTD.Inventors: Makoto Ohmori, Ayano Kobayashi, Shinji Fujisaki
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Patent number: 9887424Abstract: A solid oxide fuel cell comprises a solid electrolyte layer, a barrier layer, and a cathode. The cathode includes a cathode current collecting layer and a cathode active layer. The cathode active layer includes a plurality of micro-cracks in a surface region within a predetermined distance from the interface between the barrier layer and the cathode active layer.Type: GrantFiled: September 16, 2014Date of Patent: February 6, 2018Assignee: NGK INSULATORS, LTD.Inventors: Ayano Kobayashi, Makoto Ohmori, Mariko Okamoto
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Patent number: 9882221Abstract: A solid oxide fuel cell comprises a solid electrolyte layer, a barrier layer, and a cathode. The cathode includes a cathode current collecting layer and a cathode active layer. The cathode active layer includes a plurality of micro-cracks in an inner region separated respectively from the interface and the interface.Type: GrantFiled: September 16, 2014Date of Patent: January 30, 2018Assignee: NGK INSULATORS, LTD.Inventors: Ayano Kobayashi, Makoto Ohmori, Mariko Okamoto
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Patent number: 9882220Abstract: A solid oxide fuel cell comprises a solid electrolyte layer, a barrier layer, and a cathode. The cathode includes a cathode current collecting layer and a cathode active layer. The cathode active layer includes a plurality of micro-cracks in an interface region within a predetermined distance from the interface between the cathode current collecting layer and the cathode active layer.Type: GrantFiled: September 16, 2014Date of Patent: January 30, 2018Assignee: NGK INSULATORS, LTD.Inventors: Ayano Kobayashi, Makoto Ohmori, Mariko Okamoto
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Patent number: 9876235Abstract: A fuel cell includes an anode, a cathode and a solid electrolyte layer that is disposed between the anode and the cathode. The cathode includes a main phase and a sub phase. The main phase is composed mostly of perovskite oxide which is expressed by the general formula ABO3 and includes at least Sr at the A site. The sub phase is composed mostly of strontium sulfate. An occupied area ratio of the sub phase in a cross section of the cathode is no more than 10.2%.Type: GrantFiled: July 18, 2014Date of Patent: January 23, 2018Assignee: NGK INSULATORS, LTD.Inventors: Ayano Kobayashi, Makoto Ohmori
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Patent number: 9640825Abstract: A fuel cell includes an anode, a solid electrolyte layer, a barrier layer, and a cathode. The anode includes a transition metal and an oxygen ion conductive material. In the interface region within 3 micrometers from the interface with the solid electrolyte layer of the anode after reduction, the content rate of silicon is less than or equal to 200 ppm, the content rate of phosphorous is less than or equal to 50 ppm, the content rate of chromium is less than or equal to 100 ppm, the content rate of boron is less than or equal to 100 ppm, and the content rate of sulfur is less than or equal to 100 ppm.Type: GrantFiled: March 18, 2015Date of Patent: May 2, 2017Assignee: NGK INSULATORS, LTD.Inventors: Yohei Miura, Makoto Ohmori, Ayano Kobayashi, Takafumi Terahai
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Publication number: 20170062857Abstract: A fuel cell comprises an anode, a cathode, and a solid electrolyte layer. The solid electrolyte layer includes a first region disposed on the anode and a second region disposed between the first region and the cathode. The ratio of the ceria-based material in the first region is less than or equal to 0.5%. The ratio of the tetragonal crystal zirconia in the first region is greater than or equal to 3.0%. The atomic weight ratio of nickel to zirconia in the first region is less than or equal to 3.0 at %. The ratio of the ceria-based material in the second region is greater than or equal to 1.0%. The ratio of the tetragonal crystal zirconia in the second region is less than or equal to 0.1%.Type: ApplicationFiled: November 14, 2016Publication date: March 2, 2017Inventors: Makoto OHMORI, Ayano KOBAYASHI, Shinji FUJISAKI
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Patent number: 9520597Abstract: A cathode material for a solid oxide fuel cell comprises a complex oxide having a perovskite structure expressed by the general formula ABO3, a content amount of P included in the complex oxide being at least 1 ppm and no more than 50 ppm, a content amount of Cr in the complex oxide being at least 1 ppm and no more than 500 ppm, and a content amount of B in the complex oxide being at least 1 ppm and no more than 50 ppm in a weight ratio relative to a total weight of the complex oxide.Type: GrantFiled: September 14, 2012Date of Patent: December 13, 2016Assignee: NGK INSULATORS, LTD.Inventors: Makoto Ohmori, Ayano Kobayashi, Shinji Fujisaki
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Publication number: 20150349349Abstract: A cathode material used in an anode and a cathode contains (Co,Fe)3O4 and a perovskite type oxide that is expressed by the general formula ABO3 and includes at least one of La and Sr at the A site. A content ratio of (Co,Fe)3O4 in the cathode material is at least 0.23 wt % and no more than 8.6 wt %.Type: ApplicationFiled: August 6, 2015Publication date: December 3, 2015Inventors: Makoto OHMORI, Ayano KOBAYASHI
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Publication number: 20150194692Abstract: A fuel cell includes an anode, a solid electrolyte layer, a barrier layer, and a cathode. The anode includes a transition metal and an oxygen ion conductive material. In the interface region within 3 micrometers from the interface with the solid electrolyte layer of the anode after reduction, the content rate of silicon is less than or equal to 200 ppm, the content rate of phosphorous is less than or equal to 50 ppm, the content rate of chrome is less than or equal to 100 ppm, the content rate of boron is less than or equal to 100 ppm, and the content rate of sulfur is less than or equal to 100 ppm.Type: ApplicationFiled: March 18, 2015Publication date: July 9, 2015Inventors: Yohei MIURA, Makoto OHMORI, Ayano KOBAYASHI, Takafumi TERAHAI
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Patent number: 9017898Abstract: A fuel cell (10) includes an anode (11), a solid electrolyte layer (12), a barrier layer (13), and a cathode (14). The anode (11) includes a transition metal and an oxygen ion conductive material. In the interface region (R) within 3 micrometers from the interface with the solid electrolyte layer (12) of the anode (11) after reduction, the content rate of silicon is less than or equal to 200 ppm, the content rate of phosphorous is less than or equal to 50 ppm, the content rate of chrome is less than or equal to 100 ppm, the content rate of boron is less than or equal to 100 ppm, and the content rate of sulfur is less than or equal to 100 ppm.Type: GrantFiled: April 25, 2013Date of Patent: April 28, 2015Assignee: NGK Insulators, Ltd.Inventors: Yohei Miura, Makoto Ohmori, Ayano Kobayashi, Takafumi Terahai
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Publication number: 20150079496Abstract: A cathode material contains a main component being a complex oxide having a perovskite structure expressed by a general formula ABO3. The perovskite structure includes at least one of La and Sr at the A site. A occupied surface area ratio of a plurality of comparable crystal orientation domains is at least 10%. The plurality of comparable crystal orientation domains is defined by boundaries exhibiting a crystal orientation difference of at least 5 degrees in a crystal orientation analysis of a cross section by a method of electron backscatter diffraction.Type: ApplicationFiled: August 21, 2014Publication date: March 19, 2015Inventors: Makoto OHMORI, Ayano KOBAYASHI
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Patent number: 8956781Abstract: A fuel cell includes an anode, a cathode and a solid electrolyte layer. The cathode has a main phase and a sub phase. The main phase is composed of a perovskite type oxide including cobalt. The sub phase is composed of tricobalt tetroxide. The solid electrolyte layer is disposed between the anode and the cathode. An area occupancy of the sub phase in a sectional surface of the cathode is equal to or less than 9.8%.Type: GrantFiled: September 13, 2012Date of Patent: February 17, 2015Assignee: NGK Insulators, Ltd.Inventors: Makoto Ohmori, Ayano Kobayashi
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Patent number: 8945789Abstract: The present invention provides a solid oxide fuel cell (SOFC) including a porous fuel electrode which allows reaction of a fuel gas to proceed and which is formed of Ni and YSZ, a porous air electrode which allows reaction of an oxygen-containing gas to proceed, and a dense solid electrolyte membrane which is provided between the fuel electrode and the air electrode and which has an interface with the fuel electrode. In the fuel electrode, Ni grains present in a region located within 3 ?m from the interface (i.e., a “near-interface region”) have a mean size of 0.28 to 0.80 ?m, YSZ grains present in the near-interface region have a mean size of 0.28 to 0.80 ?m, and pores present in the near-interface region have a mean size of 0.10 to 0.87 ?m. Thus, the fuel electrode of the SOFC exhibits low reaction resistance.Type: GrantFiled: March 16, 2012Date of Patent: February 3, 2015Assignee: NGK Insulators, Ltd.Inventors: Ayano Kobayashi, Makoto Ohmori
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Patent number: 8940455Abstract: A fuel cell is provided that includes an anode, a cathode, a solid electrolyte layer, a barrier layer, and a buffer layer. The solid electrolyte layer includes zirconium and is provided between the anode and the cathode. The barrier layer includes cerium and is provided between the solid electrolyte layer and the cathode, with the barrier layer having pores. The buffer layer includes zirconium and cerium and is provided between the barrier layer and the solid electrolyte layer. The barrier layer has a first barrier layer provided near to the buffer layer with a first pore ratio and a second barrier layer provided between the first barrier layer and the cathode with a second pore ratio. The first pore ratio of the first barrier layer is larger than the second pore ratio of the second barrier layer.Type: GrantFiled: June 14, 2011Date of Patent: January 27, 2015Assignee: NGK Insulators, Ltd.Inventors: Ayano Kobayashi, Shinji Fujisaki, Makoto Ohmori
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Publication number: 20150024302Abstract: A fuel cell includes an anode, a cathode and a solid electrolyte layer that is disposed between the anode and the cathode. The cathode includes a main phase and a sub phase. The main phase is composed mostly of perovskite oxide which is expressed by the general formula ABO3 and includes at least Sr at the A site. The sub phase is composed mostly of strontium sulfate. An occupied area ratio of the sub phase in a cross section of the cathode is no more than 10.2%.Type: ApplicationFiled: July 18, 2014Publication date: January 22, 2015Inventors: Ayano KOBAYASHI, Makoto OHMORI