Patents by Inventor Chihiro Yada
Chihiro Yada 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: 20230411699Abstract: A method for producing an all solid state battery using a precipitation-dissolution reaction of metallic Li as a reaction of an anode, includes a preparation step, a liquid composition preparation step, a coating layer formation step, and a separator formation step. The preparation step includes preparing a sulfide solid electrolyte represented by Li7-aPS6-aXa (X is at least one of Cl, Br, and I, and a satisfies 0?a?2), the liquid composition preparation step includes dissolving the sulfide solid electrolyte in an alcohol-based solvent to prepare a liquid composition, the coating layer formation step includes applying the liquid composition to an anode current collector to form a coating layer, the separator formation step includes forming a separator by volatilizing the alcohol-based solvent from the coating layer by drying, and the ratio of the sulfide solid electrolyte contained in the liquid composition is 10% by weight to 30% by weight.Type: ApplicationFiled: August 28, 2023Publication date: December 21, 2023Applicant: Toyota Jidosha Kabushiki KaishaInventors: Keisuke MORITA, Chihiro Yada, Yushi Suzuki
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Patent number: 11784351Abstract: A method for producing an all solid state battery using a precipitation-dissolution reaction of metallic Li as a reaction of an anode, includes a preparation step, a liquid composition preparation step, a coating layer formation step, and a separator formation step. The preparation step includes preparing a sulfide solid electrolyte represented by Li7-aPS6-aXa (X is at least one of Cl, Br, and I, and a satisfies 0?a?2), the liquid composition preparation step includes dissolving the sulfide solid electrolyte in an alcohol-based solvent to prepare a liquid composition, the coating layer formation step includes applying the liquid composition to an anode current collector to form a coating layer, the separator formation step includes forming a separator by volatilizing the alcohol-based solvent from the coating layer by drying, and the ratio of the sulfide solid electrolyte contained in the liquid composition is 10% by weight to 30% by weight.Type: GrantFiled: September 15, 2021Date of Patent: October 10, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Morita, Chihiro Yada, Yushi Suzuki
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Publication number: 20220093961Abstract: A method for producing an all solid state battery using a precipitation-dissolution reaction of metallic Li as a reaction of an anode, includes a preparation step, a liquid composition preparation step, a coating layer formation step, and a separator formation step. The preparation step includes preparing a sulfide solid electrolyte represented by Li7-aPS6-aXa (X is at least one of Cl, Br, and I, and a satisfies 0?a?2), the liquid composition preparation step includes dissolving the sulfide solid electrolyte in an alcohol-based solvent to prepare a liquid composition, the coating layer formation step includes applying the liquid composition to an anode current collector to form a coating layer, the separator formation step includes forming a separator by volatilizing the alcohol-based solvent from the coating layer by drying, and the ratio of the sulfide solid electrolyte contained in the liquid composition is 10% by weight to 30% by weight.Type: ApplicationFiled: September 15, 2021Publication date: March 24, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke MORITA, Chihiro YADA, Yushi SUZUKI
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Patent number: 10865480Abstract: A vapour deposition method for preparing an amorphous lithium-containing oxide or oxynitride compound not containing phosphorous comprises providing a vapour source of each component element of the compound, including at least a source of lithium, a source of oxygen, a source of nitrogen in the case of an oxynitride compound, and a source or sources of one or more glass-forming elements; heating a substrate to substantially 180° C. or above; and co-depositing the component elements from the vapour sources onto the heated substrate wherein the component elements react on the substrate to form the amorphous compound.Type: GrantFiled: January 7, 2015Date of Patent: December 15, 2020Assignees: Ilika Technologies Limited, Toyota Motor CorporationInventors: Brian Elliott Hayden, Duncan Clifford Alan Smith, Christopher Edward Lee, Alexandros Anastasopoulos, Chihiro Yada, Laura Mary Perkins, David Michael Laughman
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Patent number: 10847794Abstract: An oxide electrolyte sintered body with high lithium ion conductivity and a method for producing the same, which can obtain the oxide electrolyte sintered body with high lithium ion conductivity by sintering at lower temperature than ever before. The method for producing an oxide electrolyte sintered body may comprise the steps of: preparing crystal particles of a garnet-type ion-conducting oxide which comprises Li, H, at least one kind of element L selected from the group consisting of an alkaline-earth metal and a lanthanoid element, and at least one kind of element M selected from the group consisting of a transition element that can be 6-coordinated with oxygen and typical elements belonging to the Groups 12 to 15, and which is represented by a general formula (Lix?3y?z,Ey,Hz)L?M?O? (where E is at least one kind of element selected from the group consisting of Al, Ga, Fe and Si, 3?x?3y?z?7, 0?y<0.22, 0<z?2.8, 2.5???3.5, 1.5???2.Type: GrantFiled: May 25, 2017Date of Patent: November 24, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Chihiro Yada, Shingo Ohta
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Patent number: 10727483Abstract: An oxide electrolyte sintered body with high lithium ion conductivity and a method for producing the same, which can obtain the oxide electrolyte sintered body with high lithium ion conductivity by sintering at lower temperature than ever before. The method for producing an oxide electrolyte sintered body may comprise the steps of: preparing crystal particles of a garnet-type ion-conducting oxide which comprises Li, H, at least one kind of element L selected from the group consisting of an alkaline-earth metal and a lanthanoid element, and at least one kind of element M selected from the group consisting of a transition element that can be 6-coordinated with oxygen and typical elements belonging to the Groups 12 to 15, and which is represented by a general formula (Lix?3y?z,Ey,Hz)L?M?O? (where E is at least one kind of element selected from the group consisting of Al, Ga, Fe and Si, 3?x?3y?z?7, 0?y<0.22, 0<z?2.8, 2.5???3.5, 1.5???2.Type: GrantFiled: May 25, 2017Date of Patent: July 28, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Chihiro Yada, Shingo Ohta
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Patent number: 10476077Abstract: An oxide electrolyte sintered body with high lithium ion conductivity and a method for producing the same, which can obtain the oxide electrolyte sintered body with high lithium ion conductivity by sintering at lower temperature than ever before. The method for producing an oxide electrolyte sintered body may comprise the steps of: preparing crystal particles of a garnet-type ion-conducting oxide which comprises Li, H, at least one kind of element L selected from the group consisting of an alkaline-earth metal and a lanthanoid element, and at least one kind of element M selected from the group consisting of a transition element that can be 6-coordinated with oxygen and typical elements belonging to the Groups 12 to 15, and which is represented by a general formula (Lix?3y?z,Ey,Hz)L?M?O? (where E is at least one kind of element selected from the group consisting of Al, Ga, Fe and Si, 3?x?3y?z?7, 0?y<0.22, 0<z?2.8, 2.5???3.5, 1.5???2.Type: GrantFiled: May 25, 2017Date of Patent: November 12, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Chihiro Yada, Shingo Ohta
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Publication number: 20170346092Abstract: An oxide electrolyte sintered body with high lithium ion conductivity and a method for producing the same, which can obtain the oxide electrolyte sintered body with high lithium ion conductivity by sintering at lower temperature than ever before. The method for producing an oxide electrolyte sintered body may comprise the steps of: preparing crystal particles of a garnet-type ion-conducting oxide which comprises Li, H, at least one kind of element L selected from the group consisting of an alkaline-earth metal and a lanthanoid element, and at least one kind of element M selected from the group consisting of a transition element that can be 6-coordinated with oxygen and typical elements belonging to the Groups 12 to 15, and which is represented by a general formula (Lix?3y?z,Ey,Hz)L?M?O? (where E is at least one kind of element selected from the group consisting of Al, Ga, Fe and Si, 3?x?3y?z?7, 0?y<0.22, 0<z?2.8, 2.5???3.5, 1.5???2.Type: ApplicationFiled: May 25, 2017Publication date: November 30, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Chihiro YADA, Shingo OHTA
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Patent number: 9533886Abstract: The present invention provides a vapour deposition process for the preparation of a phosphate compound, wherein the process comprises providing each component element of the phosphate compound as a vapour, and co-depositing the component element vapours on a common substrate, wherein the component elements react on the substrate to form the phosphate compound.Type: GrantFiled: July 20, 2012Date of Patent: January 3, 2017Assignees: Ilika Technologies Ltd., Toyota Motor CorporationInventors: Brian Elliott Hayden, Christopher Edward Lee, Duncan Clifford Alan Smith, Mark Stephen Beal, Xiaojuan Lu, Chihiro Yada
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Publication number: 20160340784Abstract: A vapour deposition method for preparing an amorphous lithium-containing oxide or oxynitride compound not containing phosphorous comprises providing a vapour source of each component element of the compound, including at least a source of lithium, a source of oxygen, a source of nitrogen in the case of an oxynitride compound, and a source or sources of one or more glass-forming elements; heating a substrate to substantially 180° C. or above; and co-depositing the component elements from the vapour sources onto the heated substrate wherein the component elements react on the substrate to form the amorphous compound.Type: ApplicationFiled: January 7, 2015Publication date: November 24, 2016Inventors: Brian Elliott Hayden, Duncan Clifford Alan Smith, Christopher Edward Lee, Alexandros Anastasopoulos, Chihiro Yada, Laura Mary Perkins, David Michael Laughman
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Patent number: 9300008Abstract: A main object of the present invention is to provide a Li—La—Ti—O based solid electrolyte material having high Li ion conductivity in the crystal grain boundary. The present invention attains the object by providing solid electrolyte material represented by a general formula: Li3x(La(2/3?x)?aM1a) (Ti1?bM2b)O3, wherein “x” is 0<x<0.17; “a” is 0?a?0.5; “b” is 0?b?0.5; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga, and wherein the solid electrolyte material is a crystalline material, is in thin film form, and has a thickness of 250 nm to 850 nm.Type: GrantFiled: April 13, 2010Date of Patent: March 29, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Chihiro Yada, Shoji Yokoishi, Brian Elliott Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
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Patent number: 9196924Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La2?aM1a)(Ti3?bM2b)O9+?, characterized in that “x” is 0<x?1; “a” is 0?a?2; “b” is 0?b?3; “?” is ?2???2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.Type: GrantFiled: April 13, 2010Date of Patent: November 24, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliott Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
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Patent number: 9067790Abstract: A vapor deposition process for the preparation of a chemical compound, wherein the process comprises providing each component element of the chemical compound as a vapor, and co-depositing the component element vapors on a common substrate, wherein: the vapor of at least one component element is provided using a cracking source; the vapor of at least one other component element is provided using a plasma source; and at least one further component element vapor is provided; wherein the component elements react on the substrate to form the chemical compound.Type: GrantFiled: July 20, 2012Date of Patent: June 30, 2015Assignees: Ilika Technologies Ltd., Toyota Motor CorporationInventors: Brian Elliott Hayden, Christopher Edward Lee, Duncan Clifford Alan Smith, Mark Stephen Beal, Xiaojuan Lu, Chihiro Yada
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Patent number: 9012084Abstract: A secondary battery is provided with a positive electrode active material layer a containing a positive electrode active material, a negative electrode active material layer containing a negative electrode active material, an electrolyte layer formed between the positive electrode active material layer and the negative electrode active material layer, and a modification material disposed at an interface between an electrolyte material and at least one electrode active material among the positive electrode active material and the negative electrode active material, and having a higher relative permittivity than the relative permittivity of the electrolyte material.Type: GrantFiled: December 16, 2011Date of Patent: April 21, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Chihiro Yada, Kazuto Ide
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Patent number: 8974720Abstract: The present invention provides a method for producing a ceramic laminate capable of preventing coming-off of materials and warpage of the ceramic laminate by a heat treatment at a relatively-low temperature, and a ceramic laminate produced by the production method. Disclosed is a method for producing a ceramic laminate having a layer structure in which two or more layers are laminated, including: a step of producing a laminate including a first layer and a second layer, the first layer containing a solid electrolyte and the second layer containing at least composite particles obtained by covering an electrode active material with the solid electrolyte; and a step of performing a heat treatment on the laminate including the first and second layers at a temperature of 500° C. or more and less than 700° C.Type: GrantFiled: July 1, 2010Date of Patent: March 10, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Chihiro Yada, Yoshitaka Minamida, Keiichi Kohama
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Patent number: 8945779Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La1-aM1a)y(Ti1-bM2b)zO?, characterized in that “x”, “y”, and “z” satisfy relations of x+y+z=1, 0.652?x/(x+y+z)?0.753, and 0.167?y/(y+z)?0.232; “a” is 0?a?1; “b” is 0?b?1; “?” is 0.8???1.2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.Type: GrantFiled: April 13, 2010Date of Patent: February 3, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliott Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
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Publication number: 20140287160Abstract: The present invention provides a vapour deposition process for the preparation of a phosphate compound, wherein the process comprises providing each component element of the phosphate compound as a vapour, and co-depositing the component element vapours on a common substrate, wherein the component elements react on the substrate to form the phosphate compound.Type: ApplicationFiled: July 20, 2012Publication date: September 25, 2014Applicants: TOYOTA MOTOR CORPORATION, ILIKA TECHNOLOGIES LTD.Inventors: Brian Elliott Hayden, Christopher Edward Lee, Duncan Clifford Alan Smith, Mark Stephen Beal, Xiaojuan Lu, Chihiro Yada
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Patent number: 8795902Abstract: A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Lix(La1-aM1a)y(Ti1-bM2b)zO?, wherein “x”, “y”, and “z” satisfy relations of x+y+z=1, 0.850?x/(x+y+z)?0.930, and 0.087?y/(y+z)?0.115; “a” is 0?a?1; “b” is 0?b?1; “?” is 0.8???1.2; “M1” is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and “M2” is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.Type: GrantFiled: April 13, 2010Date of Patent: August 5, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Chihiro Yada, Hiroshi Suyama, Shoji Yokoishi, Brian Elliot Hayden, Thierry Le Gall, Duncan Clifford Alan Smith, Christopher Edward Lee
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Publication number: 20140072727Abstract: The present invention provides a vapour deposition process for the preparation of a chemical compound, wherein the process comprises providing each component element of the chemical compound as a vapour, and co-depositing the component element vapours on a common substrate, wherein: the vapour of at least one component element is provided using a cracking source; the vapour of at least one other component element is provided using a plasma source; and at least one further component element vapour is provided; wherein the component elements react on the substrate to form the chemical compound.Type: ApplicationFiled: July 20, 2012Publication date: March 13, 2014Applicants: TOYOTA MOTOR CORPORATION, ILIKA TECHNOLOGIES LTD.Inventors: Brian Elliott Hayden, Christopher Edward Lee, Duncan Clifford Alan Smith, Mark Stephen Beal, Xiaojuan Lu, Chihiro Yada
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Publication number: 20140038054Abstract: An all-solid-state battery has a mixed electrode layer in which a positive electrode active material and a negative electrode active material are present in a dispersed state. A solid electrolyte section that contains at least one element that makes up the positive electrode active material and at least one element that makes up the negative electrode active material is formed at an interface between the positive electrode active material and the negative electrode active material. The solid electrolyte section is not formed at interfaces between the positive electrode active material portions and at interfaces between the negative electrode active material portions. The positive electrode active material and the negative electrode active material are in the form of predetermined combinations.Type: ApplicationFiled: July 22, 2013Publication date: February 6, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takeshi TOJIGAMORI, Chihiro YADA, Masato HOZUMI