Patents by Inventor Shuzo Tsuchida
Shuzo Tsuchida 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: 11923510Abstract: A solid-state battery that exhibits improved battery performance includes: a positive-electrode collector; a negative-electrode collector; a positive electrode layer formed on the positive-electrode collector and containing a positive-electrode active material and a solid electrolyte; a negative electrode layer formed on the negative-electrode collector and containing a negative-electrode active material and a solid electrolyte; and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer and containing a solid electrolyte. At least one of the solid electrolyte and the solid electrolyte partly represents a porous solid electrolyte.Type: GrantFiled: January 9, 2020Date of Patent: March 5, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shuzo Tsuchida, Kazufumi Miyatake, Akihiro Horikawa
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Publication number: 20230411682Abstract: An all-solid battery has a structure in which a cathode current collector, a cathode layer that contains cathode active materials constituted by a plurality of particles and solid electrolytes constituted by a plurality of particles, a solid-electrolyte layer that contains solid electrolytes, an anode layer that contains anode active materials and solid electrolytes, and an anode current collector are stacked in this order. The cathode layer includes a region where the plurality of particles constituting the solid electrolytes are filled or continuously densely packed in a sliced surface in a case where an end of the cathode layer is sliced, and a distance between two adjacent particles having a positional relationship across the region among the plurality of particles constituting the cathode active material is 2 times or more than an average particle size of the cathode active materials.Type: ApplicationFiled: September 4, 2023Publication date: December 21, 2023Inventors: SHUZO TSUCHIDA, AMI OKABE, AKIHIRO HORIKAWA
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Patent number: 11843120Abstract: An electrode includes a collector, and an active material mixture layer located on the collector and containing first particles, second particles, first active material particles, and second active material particles. The active material mixture layer includes a first mixture layer located on the collector and containing the first particles and the first active material particles, and a second mixture layer located on the first mixture layer and containing the second particles and the second active material particles. The active material mixture layer has a boundary in which the first active material particles and the second active material particles are in contact with each other in a discontinuous state at least in part, in a cross-sectional view of the electrode.Type: GrantFiled: August 16, 2021Date of Patent: December 12, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Ami Okabe, Shuzo Tsuchida, Akihiro Horikawa
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Patent number: 11824187Abstract: A negative electrode active substance is used for a negative electrode layer of an all-solid battery and contains a plurality of secondary particles. The plurality of secondary particles contain impregnated particles which are secondary particles having a polymer solid electrolyte region impregnated with the polymer solid electrolyte therein and an active material region.Type: GrantFiled: May 16, 2022Date of Patent: November 21, 2023Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Motohiro Okochi, Akihiro Horikawa, Shuzo Tsuchida
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Publication number: 20230093941Abstract: A powder layer composite includes a current collector, and a powder layer formed on the current collector and having a film thickness of 50 ?m or more. The powder layer contains a powder made of at least one type of particle material. A concentration of a solvent contained in the powder layer is 50 ppm or less. A variation in a weight per unit area of the powder layer is 10% or less in an optional region with 30 mm×30 mm in the powder layer.Type: ApplicationFiled: September 6, 2022Publication date: March 30, 2023Inventors: TOSHIYUKI KOJIMA, AKIHIRO HORIKAWA, SHUZO TSUCHIDA
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Publication number: 20230103232Abstract: An all-solid-state battery has a structure including a positive electrode current collector; a positive electrode layer containing a positive electrode active material, a first solid electrolyte, a second solid electrolyte, and a conductive fiber; a solid electrolyte layer containing a fourth solid electrolyte; a negative electrode layer containing a negative electrode active material and a third solid electrolyte; and a negative electrode current collector. These are stacked in this order. The positive electrode layer includes: a fiber-containing region that coats the positive electrode active material and that contains the conductive fiber and the first solid electrolyte; and a fiber-free region that is located in a gap surrounded by the positive electrode active material coated by the fiber-containing region. The fiber-free region is free of the conductive fiber, and contains the second solid electrolyte.Type: ApplicationFiled: September 9, 2022Publication date: March 30, 2023Inventors: SHUZO TSUCHIDA, AKIHIRO HORIKAWA
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Publication number: 20220416251Abstract: A positive electrode layer is to be used in an all-solid-state battery, and includes a positive electrode current collector; a positive electrode junction layer including at least a conductive agent and disposed on the positive electrode current collector; and a positive electrode material mixture layer disposed on the positive electrode junction layer and including at least a positive electrode active material including a plurality of particles, a solid electrolyte having ion conductivity, and a plurality of conductive fibers. The plurality of conductive fibers include a conductive fiber that is positioned to connect adjacent particles of the positive electrode active material. A concentration of a binder included in the positive electrode material mixture layer is 100 ppm or less, and a concentration of a solvent included in the positive electrode material mixture layer is 50 ppm or less.Type: ApplicationFiled: April 13, 2022Publication date: December 29, 2022Inventors: Toshiyuki Kojima, Shuzo Tsuchida, Akihiro Horikawa
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Publication number: 20220344705Abstract: An all-solid-state battery has a structure in which a positive electrode current collector, a positive electrode layer containing a positive electrode active material and a solid electrolyte, a solid electrolyte layer containing a solid electrolyte, a negative electrode layer containing a negative electrode active material and a solid electrolyte, and a negative electrode current collector are stacked in this order. The solid electrolyte layer has a repeating structure in which a low porosity portion and a high porosity portion having a higher porosity than a porosity of the low porosity portion are repeated in an in-plane direction.Type: ApplicationFiled: April 13, 2022Publication date: October 27, 2022Inventors: SHUZO TSUCHIDA, AMI OKABE, YOSHIRO KITAMURA, AKIHIRO HORIKAWA
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Publication number: 20220278314Abstract: A negative electrode active substance is used for a negative electrode layer of an all-solid battery and contains a plurality of secondary particles. The plurality of secondary particles contain impregnated particles which are secondary particles having a polymer solid electrolyte region impregnated with the polymer solid electrolyte therein and an active material region.Type: ApplicationFiled: May 16, 2022Publication date: September 1, 2022Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Motohiro OKOCHI, Akihiro HORIKAWA, Shuzo TSUCHIDA
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Publication number: 20220200044Abstract: All-solid-state battery 100 has a structure in which positive electrode current collector 6, positive electrode layer 20 containing positive electrode active material 3 and solid electrolyte 1, solid electrolyte layer 10 containing solid electrolyte 2, negative electrode layer 30 containing negative electrode active material 4 and solid electrolyte 5, and negative electrode current collector 7 are stacked in this order. Solid electrolyte 2 contains first material 21 and second material 22 having an ionic conductivity lower than an ionic conductivity of first material 21. First material 21 includes first particles 40, and at least a part of a surface of first particles 40 is covered with second material 22.Type: ApplicationFiled: November 10, 2021Publication date: June 23, 2022Inventors: SHUZO TSUCHIDA, AKIHIRO HORIKAWA, TAKESHI KOIWASAKI
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Publication number: 20220200045Abstract: All-solid-state battery 100 has a structure in which positive electrode current collector 7, positive electrode layer 20 containing positive electrode active material 3, solid electrolyte 1 including a plurality of first particles having a first average particle diameter, and solid electrolyte 2 composed of a plurality of second particles having second average particle diameter larger than the first average particle diameter, solid electrolyte layer 10 containing solid electrolyte 6, negative electrode layer 30 containing negative electrode active material 4 and solid electrolyte 5, and negative electrode current collector 8 are stacked in this order, in which at least a part of solid electrolyte 1 serves as a cover layer 11 covering at least a part of a surface of positive electrode active material 3, and at least one of the plurality of second particles are partially embedded in cover layer 11.Type: ApplicationFiled: November 18, 2021Publication date: June 23, 2022Inventors: SHUZO TSUCHIDA, AKIHIRO HORIKAWA
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Publication number: 20220085381Abstract: An electrode includes a collector, and an active material mixture layer located on the collector and containing first particles, second particles, first active material particles, and second active material particles. The active material mixture layer includes a first mixture layer located on the collector and containing the first particles and the first active material particles, and a second mixture layer located on the first mixture layer and containing the second particles and the second active material particles. The active material mixture layer has a boundary in which the first active material particles and the second active material particles are in contact with each other in a discontinuous state at least in part, in a cross-sectional view of the electrode.Type: ApplicationFiled: August 16, 2021Publication date: March 17, 2022Inventors: AMI OKABE, SHUZO TSUCHIDA, AKIHIRO HORIKAWA
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Publication number: 20220052351Abstract: A fuel-cell cell capable of reducing elution of particles with a catalytic function into the electrolyte membrane is provided. A fuel-cell cell according to the present disclosure includes an electrolyte membrane, a cathode catalyst layer laminated on a first main surface side of the electrolyte membrane, a cathode gas diffusion layer laminated on the cathode catalyst layer, an anode catalyst layer laminated on a second surface side of the electrolyte membrane, and an anode gas diffusion layer laminated on the anode catalyst layer. The cathode catalyst layer includes a cathode catalyst in which catalyst particles with a catalytic function are carried on a carrier, and the cathode catalyst includes a water-repellent polymer material in at least part of a surface thereof.Type: ApplicationFiled: November 29, 2019Publication date: February 17, 2022Inventors: Shuzo TSUCHIDA, Ryouhei SEKI, Tsutomu KAWASHIMA
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Patent number: 11069903Abstract: A catalyst, includes: a carbon support that possesses functional groups including a carboxyl group; and a metal that is supported onto the carbon support, wherein the proportion of the carboxyl group to the functional groups is 10% or higher. A method for producing a catalyst includes: (i) supporting metal particles onto a carbon support; (ii) bringing the carbon support into contact with an acid solution; and (iii) calcining the carbon support after Step (ii), wherein the carbon support included in the produced catalyst possesses functional groups including a carboxyl group, and the proportion of said carboxyl group to the functional groups is 10% or higher.Type: GrantFiled: October 30, 2017Date of Patent: July 20, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shuzo Tsuchida, Ryouhei Seki, Yasuhiro Ueyama
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Publication number: 20200243914Abstract: A solid-state battery that exhibits improved battery performance includes: a positive-electrode collector; a negative-electrode collector; a positive electrode layer formed on the positive-electrode collector and containing a positive-electrode active material and a solid electrolyte; a negative electrode layer formed on the negative-electrode collector and containing a negative-electrode active material and a solid electrolyte; and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer and containing a solid electrolyte. At least one of the solid electrolyte and the solid electrolyte partly represents a porous solid electrolyte.Type: ApplicationFiled: January 9, 2020Publication date: July 30, 2020Inventors: SHUZO TSUCHIDA, KAZUFUMI MIYATAKE, AKIHIRO HORIKAWA
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Publication number: 20200212435Abstract: A negative electrode active substance is used for a negative electrode layer of an all-solid battery and contains a plurality of secondary particles. The plurality of secondary particles contain impregnated particles which are secondary particles having a polymer solid electrolyte region impregnated with the polymer solid electrolyte therein and an active material region.Type: ApplicationFiled: December 18, 2019Publication date: July 2, 2020Inventors: MOTOHIRO OKOCHI, AKIHIRO HORIKAWA, SHUZO TSUCHIDA
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Publication number: 20190103613Abstract: A catalyst layer, includes: a carrier; metal particles located over the carrier; an underlayer located on the carrier; and an ionomer-based layer located over the underlayer, wherein the underlayer includes a polymer material, and covers at least parts of the metal particles, and the ionomer-based layer includes a proton-conducting resin. A fuel cell electrode includes the catalyst layer, and a fuel cell including the above catalyst layer. A method for producing a catalyst layer, includes: bringing at least one first solution including a polymer material into contact with a metal-particle-supported carrier to form an underlayer; and bringing a second solution including a proton-conducting resin into contact with the metal-particle-supported carrier to coat said metal-particle-supported carrier with the proton-conducting resin.Type: ApplicationFiled: September 20, 2018Publication date: April 4, 2019Inventors: SHUZO TSUCHIDA, RYOUHEI SEKI, YASUHIRO UEYAMA
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Patent number: 10153495Abstract: Provided is a method for producing a catalyst, including: (i) mixing a core metal salt that serves as a material for a core metal, and a complexing agent (a) to produce a core metal complex solution containing a core metal complex; (ii) mixing a shell metal salt that serves as a material for a shell metal, and a complexing agent (b) to produce a shell metal complex solution containing a shell metal complex; (iii) mixing a carbon powder and a dispersing agent to produce a carbon powder dispersion; (iv) mixing the core metal complex solution, the shell metal complex solution, and the carbon powder dispersion, and reducing the core metal complex and the shell metal complex on the carbon powder by using at least one reducing agent; and (v) drying and baking at a predetermined temperature the carbon powder resulting from Step (iv), said carbon powder having a core-shell structure that includes the core metal and the shell metal.Type: GrantFiled: February 3, 2017Date of Patent: December 11, 2018Assignee: Panasonic CorporationInventors: Shuzo Tsuchida, Yasushi Taniguchi, Ryouhei Seki, Yasuhiro Ueyama, Hideyuki Takahashi, Shun Yokoyama, Kazuyuki Tohji
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Publication number: 20180159145Abstract: A catalyst, includes: a carbon support that possesses functional groups including a carboxyl group; and a metal that is supported onto the carbon support, wherein the proportion of the carboxyl group to the functional groups is 10% or higher. A method for producing a catalyst includes: (i) supporting metal particles onto a carbon support; (ii) bringing the carbon support into contact with an acid solution; and (iii) calcining the carbon support after Step (ii), wherein the carbon support included in the produced catalyst possesses functional groups including a carboxyl group, and the proportion of said carboxyl group to the functional groups is 10% or higher.Type: ApplicationFiled: October 30, 2017Publication date: June 7, 2018Inventors: SHUZO TSUCHIDA, RYOUHEI SEKI, YASUHIRO UEYAMA
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Patent number: 9929412Abstract: A manufacturing method of a supported platinum catalyst, includes: generating a platinum group salt solution using platinum group salts and a complexing agent; mixing the platinum group salt solution and a carbon powder dispersion in which carbon powder is dispersed; and adding a reducing agent to a mixed solution of the platinum group salt solution and the carbon powder dispersion, and reducing the platinum group salts to allow the platinum group particles to be supported on the carbon powder.Type: GrantFiled: April 29, 2016Date of Patent: March 27, 2018Assignee: Panasonic CorporationInventors: Yasuhiro Ueyama, Toshiyuki Kojima, Yasushi Taniguchi, Kazunori Kubota, Hideyuki Takahashi, Shun Yokoyama, Kazuyuki Tohji, Shuzo Tsuchida