Patents by Inventor Chie Kawamura
Chie Kawamura 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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Patent number: 11916188Abstract: An all solid battery includes: a solid electrolyte layer including a glass component, a main component of the solid electrolyte layer being phosphoric acid salt-based solid electrolyte; and electrode layers that are provided on both main faces of the solid electrolyte layer, wherein the electrode layers include a carbon material having an average particle diameter of 40 nm or more and 120 nm or less, wherein a DBP oil absorption of the carbon material is 200 mL/100 g or less.Type: GrantFiled: March 18, 2020Date of Patent: February 27, 2024Assignee: TAIYO YUDEN CO., LTD.Inventors: Sachie Tomizawa, Daigo Ito, Chie Kawamura, Masashi Sekiguchi, Takato Satoh
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Patent number: 11908995Abstract: An all solid battery includes: a solid electrolyte layer; a positive electrode layer provided on a first face of the solid electrolyte layer, a part of the positive electrode layer extending to a first edge portion of the solid electrolyte layer; a first margin layer that is provided on an area of the solid electrolyte layer where the positive electrode is not provided; a negative electrolyte layer provided on a second face of the solid electrolyte layer, a part of the negative electrolyte layer extending to a second edge portion of the solid electrolyte layer; a second margin layer that is provided on an area of the second face of the solid electrolyte layer where the negative electrolyte layer is not provided; wherein a main component of the first margin layer and the second margin layer is solid electrolyte of which ionic conductivity is lower than that of the solid electrolyte layer.Type: GrantFiled: June 1, 2021Date of Patent: February 20, 2024Assignee: TAIYO YUDEN CO., LTD.Inventors: Daigo Ito, Takato Satoh, Sachie Tomizawa, Chie Kawamura
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Patent number: 11784317Abstract: A solid oxide fuel cell includes: a support layer mainly composed of a metal; an anode supported by the support; and a mixed layer interposed between the support and the anode, wherein the anode includes an electrode bone structure composed of a ceramic material containing a first oxide having electron conductivity and a second oxide having oxygen ion conductivity, and the mixed layer has a structure in which a metallic material and a ceramic material are mixed.Type: GrantFiled: August 20, 2020Date of Patent: October 10, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Xinyu Li, Chie Kawamura
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Patent number: 11769907Abstract: An all solid battery includes: a multilayer chip in which each of solid electrolyte layers and each of electrodes are alternately stacked, a main component of the solid electrolyte layers being phosphoric acid salt-based solid electrolyte, the plurality of electrodes being alternately exposed to a first end face and a second end face of the multilayer chip, a first external electrode provided on the first end face; a second external electrode provided on the second end face; and wherein L/W is 0.2 or more and 1.1 or less, when a length of the multilayer chip in a first direction in which the first end face faces with the second end face is L, and a width of the multilayer chip in a second direction that is vertical to the first direction and a stacking direction of the multilayer chip is W.Type: GrantFiled: March 16, 2020Date of Patent: September 26, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Chie Kawamura, Masashi Sekiguchi, Daigo Ito, Takato Satoh, Sachie Tomizawa
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Patent number: 11756736Abstract: A manufacturing method of ceramic powder includes mixing a barium carbonate having a specific surface are of 15 m2/g or more, a titanium dioxide having a specific surface area of 20 m2/g or more, a first compound of a donor element having a larger valence than Ti, and a second compound of an acceptor element having a smaller valence than Ti and having a larger ion radium than Ti and the donor element, and synthesizing barium titanate powder by calcining the barium carbonate, the titanium dioxide, the first compound and the second compound until a specific surface area of the barium titanate powder becomes 4 m2/g or more and 25 m2/g or less.Type: GrantFiled: October 14, 2021Date of Patent: September 12, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Chie Kawamura, Kazumichi Hiroi, Osamu Hattori
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SOLID OXIDE FUEL CELL, SOLID OXIDE FUEL CELL STACK AND MANUFACTURING METHOD OF SOLID OXIDE FUEL CELL
Publication number: 20230115530Abstract: The solid oxide fuel cell includes a support of which a main component is a metal, an anode layer that is supported by the support, an electrolyte layer of solid oxide that is provided on the anode layer and has oxygen ion conductivity, a cathode layer that is provided on the electrolyte layer; and a porous layer of a metal that covers the cathode layer and a part of the electrolyte layer around the cathode.Type: ApplicationFiled: November 25, 2020Publication date: April 13, 2023Applicant: TAIYO YUDEN CO., LTD.Inventors: Xinyu LI, Chie KAWAMURA -
Patent number: 11594764Abstract: An all solid battery includes a solid electrolyte layer, a first electrode structure that has a structure in which a first electric collector layer of which a main component is a conductive material is sandwiched by two first electrode layers including an active material, and a second electrode structure that has a structure in which a second electric collector layer of which a main component is a conductive material is sandwiched by two second electrode layers including an active material. Roughness of interfaces between the first electric collector layer and the two first electrode layers and/or roughness of interfaces between the second electric collector layer and the two second electrode layers is larger than roughness of interfaces between the solid electrolyte layer, and the first electrode layer and the second electrode layer sandwiching the solid electrolyte layer.Type: GrantFiled: November 19, 2020Date of Patent: February 28, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Chie Kawamura, Kotaro Mizuno
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Patent number: 11588172Abstract: An all-solid-state battery includes a pair of electrode layers consisting of first and second electrode layers, and a solid-state electrolyte layer positioned between the pair of electrode layers, wherein the first electrode layer contains an electrode active material having an olivine-type crystalline structure, the solid-state electrolyte layer contains a solid-state electrolyte having a NASICON-type crystalline structure, and the solid-state electrolyte layer in the vicinity of the first electrode layer is expressed by a composition formula LixAyCozM?aM?bP3Oc. The all-solid-state battery can improve the long-term cycle stability.Type: GrantFiled: October 24, 2017Date of Patent: February 21, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Daigo Ito, Takeyuki Fukushima, Hidenori Somei, Yoichiro Ogata, Chie Kawamura
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Patent number: 11581574Abstract: An all solid battery includes a solid electrolyte layer of which a main component is a Li—Al-M-PO4-based phosphoric acid salt, a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an active material, and a second electrode layer that is provided on a second main face of the solid electrolyte layer and includes an active material. “M” is at least one of Ge, Ti, and Zr. A region in which a ratio of MO2 with respect to Li—Al-M-PO4 is 5% or more is unevenly distributed from a center in a thickness of the solid electrolyte layer to 0.4 A downward and to 0.4 A upward, when the thickness of the solid electrolyte layer is expressed by “A”.Type: GrantFiled: November 25, 2020Date of Patent: February 14, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Takato Sato, Daigo Ito, Sachie Tomizawa, Chie Kawamura, Masashi Sekiguchi
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Patent number: 11575137Abstract: A fuel cell stack includes: a first fuel cell and a second fuel cell, each of which has a structure in which a solid oxide electrolyte layer having oxygen ion conductivity is provided between two electrode layers; and an interconnector that is provided between the first fuel cell and the second fuel cell and has a separator made of a metal material, wherein the interconnector has a first metal porous part and a first gas passage on a first face of the separator on a side of the first fuel cell, wherein the interconnector has a second metal porous part and a second gas passage on a second face of the separator on a side of the second fuel cell.Type: GrantFiled: November 14, 2019Date of Patent: February 7, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Xinyu Li, Chie Kawamura
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Patent number: 11431015Abstract: A fuel cell includes: a porous anode; and an electrolyte layer that is provided on the anode and includes solid oxide having oxygen ion conductivity, wherein the anode has a structure in which an anode catalyst is provided in a void, wherein, in a cross section of the anode and the electrolyte layer in a stacking direction thereof, an average void diameter of voids in the anode is 0.1 ?m or more and 2 ?m or less, wherein, in the cross section, a D10% diameter of void diameter distribution of the voids in the anode is 0.1 ?m or mode and 2 ?m or less, wherein a D90% diameter of the void diameter distribution is 1 ?m or more and 7 ?m or less.Type: GrantFiled: February 13, 2020Date of Patent: August 30, 2022Assignee: TAIYO YUDEN CO., LTD.Inventors: Chie Kawamura, Xinyu Li
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Patent number: 11251439Abstract: A fuel cell includes: a solid oxide electrolyte layer that has oxygen ion conductivity; an electrode layer that is provided on the solid oxide electrolyte layer; a separator that is provided on the electrode layer and is made of a metal material; and a sealing member that is provided from a circumference region of the solid oxide electrolyte layer to a circumference region of the dense metal layer, wherein the electrode layer, the separator and the sealing member demarcate at least a part of a gas passage, wherein at least a part of the sealing member is a mixed layer of a ceramic and a metal.Type: GrantFiled: November 14, 2019Date of Patent: February 15, 2022Assignee: TAIYO YUDEN CO., LTD.Inventors: Xinyu Li, Chie Kawamura
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Publication number: 20220037088Abstract: A manufacturing method of ceramic powder includes mixing a barium carbonate having a specific surface are of 15 m2/g or more, a titanium dioxide having a specific surface area of 20 m2/g or more, a first compound of a donor element having a larger valence than Ti, and a second compound of an acceptor element having a smaller valence than Ti and having a larger ion radium than Ti and the donor element, and synthesizing barium titanate powder by calcining the barium carbonate, the titanium dioxide, the first compound and the second compound until a specific surface area of the barium titanate powder becomes 4 m2/g or more and 25 m2/g or less.Type: ApplicationFiled: October 14, 2021Publication date: February 3, 2022Inventors: Chie KAWAMURA, Kazumichi HIROI, Osamu HATTORI
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Patent number: 11217820Abstract: An all solid battery includes: a solid electrolyte layer; a first electrode layer that is formed on a first main face of the solid electrolyte layer; a first electric collector layer that is formed on a face of the first electrode layer, the face being opposite to the first main face; a second electrode layer that is formed on a second main face of the solid electrolyte layer; and a second electric collector layer that is formed on a face of the second electrolyte layer, the face being opposite to the second main face, wherein at least one of the first electric collector layer and the second electric collector layer includes Pd and board-shaped graphite carbon, wherein a volume ratio of Pd and the board-shaped graphite carbon in the at least one of the first electric collector layer and the second electric collector layer is 20:80 to 80:20.Type: GrantFiled: March 26, 2019Date of Patent: January 4, 2022Assignee: TAIYO YUDEN CO., LTD.Inventors: Daigo Ito, Takato Satoh, Sachie Tomizawa, Chie Kawamura
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Patent number: 11201351Abstract: An all solid battery includes: a solid electrolyte layer including phosphoric acid salt-based solid electrolyte; a first electrode that is formed on a first main face of the solid electrolyte layer; and a second electrode that is formed on a second main face of the solid electrolyte layer, wherein a D50% grain diameter of crystal grains of the phosphoric acid salt-based solid electrolyte is 0.5 ?m or less, wherein a D90% grain diameter of the crystal grains is 3 ?m or less.Type: GrantFiled: September 4, 2019Date of Patent: December 14, 2021Assignee: TAIYO YUDEN CO., LTD.Inventors: Chie Kawamura, Sachie Tomizawa, Daigo Ito, Takato Satoh
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Patent number: 11177073Abstract: A manufacturing method of ceramic powder includes: synthesizing barium titanate powder from barium carbonate, titanium dioxide, manganese carbonate, and one of ammonium molybdate and tungsten oxide, wherein: a solid solution amount of the donor element is 0.05 mol or more and 0.3 mol or less; a solid solution amount of the accepter element with respect to the barium titanate is 0.02 mol or more and 0.2 mol or less on a presumption that the amount of the barium titanate is 100 mol and the acceptor element is converted into an oxide; and relationships y??0.0003x+1.0106, y??0.0002x+1.0114, 4?x?25 and y?1.0099 are satisfied when a specific surface area of the ceramic powder is “x” and an axial ratio c/a of the ceramic powder is “y”.Type: GrantFiled: May 22, 2020Date of Patent: November 16, 2021Assignee: TAIYO YUDEN CO., LTD.Inventors: Chie Kawamura, Kazumichi Hiroi, Osamu Hattori
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Publication number: 20210328263Abstract: An all solid battery includes: a solid electrolyte layer; a positive electrode layer provided on a first face of the solid electrolyte layer, a part of the positive electrode layer extending to a first edge portion of the solid electrolyte layer; a first margin layer that is provided on an area of the solid electrolyte layer where the positive electrode is not provided; a negative electrolyte layer provided on a second face of the solid electrolyte layer, a part of the negative electrolyte layer extending to a second edge portion of the solid electrolyte layer; a second margin layer that is provided on an area of the second face of the solid electrolyte layer where the negative electrolyte layer is not provided; wherein a main component of the first margin layer and the second margin layer is solid electrolyte of which ionic conductivity is lower than that of the solid electrolyte layer.Type: ApplicationFiled: June 1, 2021Publication date: October 21, 2021Inventors: Daigo ITO, Takato SATOH, Sachie TOMIZAWA, Chie KAWAMURA
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Patent number: 11127975Abstract: An all solid battery includes: a solid electrolyte layer including solid electrolyte; a first electrode layer that is formed on a first main face of the solid electrolyte layer and includes an active material; and a second electrode layer that is formed on a second main face of the solid electrolyte layer and includes an active material, wherein the solid electrolyte layer includes polymer solid electrolyte including lithium salt, in a clearance of a sintered compact of phosphoric acid salt-based solid electrolyte.Type: GrantFiled: September 16, 2019Date of Patent: September 21, 2021Assignee: TAIYO YUDEN CO., LTD.Inventors: Takato Satoh, Daigo Ito, Sachie Tomizawa, Chie Kawamura
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Patent number: 11087926Abstract: A multilayer ceramic capacitor includes: a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, a main component of the dielectric layers being ceramic, wherein: a second-phase has an average diameter of 150 nm or less and is in at least one of interfaces between the dielectric layers and the internal electrode layers; and at least one of the internal electrode layers includes a grain of which a main component is ceramic.Type: GrantFiled: August 6, 2018Date of Patent: August 10, 2021Assignee: TAIYO YUDEN CO., LTD.Inventor: Chie Kawamura
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Patent number: 11056716Abstract: An all solid battery includes: a solid electrolyte layer; a positive electrode layer provided on a first face of the solid electrolyte layer, a part of the positive electrode layer extending to a first edge portion of the solid electrolyte layer; a first margin layer that is provided on an area of the solid electrolyte layer where the positive electrode is not provided; a negative electrolyte layer provided on a second face of the solid electrolyte layer, a part of the negative electrolyte layer extending to a second edge portion of the solid electrolyte layer; a second margin layer that is provided on an area of the second face of the solid electrolyte layer where the negative electrolyte layer is not provided; wherein a main component of the first margin layer and the second margin layer is solid electrolyte of which ionic conductivity is lower than that of the solid electrolyte layer.Type: GrantFiled: October 31, 2018Date of Patent: July 6, 2021Assignee: TAIYO YUDEN CO., LTD.Inventors: Daigo Ito, Takato Satoh, Sachie Tomizawa, Chie Kawamura