Patents by Inventor Sachie TOMIZAWA

Sachie TOMIZAWA 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).

  • Publication number: 20210083321
    Abstract: An all-solid battery includes: a multilayer structure that includes a plurality of first electrodes and a plurality of second electrodes, and has a first side face and a second side face adjacent to each other, the plurality of first electrodes and the plurality of second electrodes being alternately stacked with solid electrolyte layers interposed between the plurality of first electrodes and the plurality of second electrodes; a first extraction part exposed on the first side face, the first extraction part being a part of the first electrode; a second extraction part exposed on the second side face, the second extraction part being a part of the second electrode; a first external electrode coupled to the first extraction part on the first side face; and a second external electrode coupled to the second extraction part on the second side face.
    Type: Application
    Filed: September 1, 2020
    Publication date: March 18, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Daigo ITO, Takato SATOH, Sachie TOMIZAWA, Chie KAWAMURA, Masashi SEKIGUCHI
  • Publication number: 20210057781
    Abstract: An all-solid battery includes: a solid electrolyte layer mainly composed of oxide-based solid electrolyte; a first electrode layer formed on a first principal face of the solid electrolyte layer, the first electrode layer containing an active material; a second electrode layer formed on a second principal face of the solid electrolyte layer, the second electrode layer containing another active material, wherein no collector layer that is in contact with the second electrode layer is provided in a direction in which the solid electrolyte layer, the first electrode layer, and the second electrode layer are stacked, and the second electrode layer includes board-shaped carbon.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 25, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Sachie TOMIZAWA, Daigo ITO, Chie KAWAMURA
  • Publication number: 20200403274
    Abstract: An all solid battery includes: a solid electrolyte layer of which a main component is oxide-based solid electrolyte; 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, wherein at least one of the first electrode layer and the second electrode layer includes an aggregate of carbon particles and a cavity, wherein the aggregate demarcates at least a part of the cavity.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 24, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Sachie TOMIZAWA, Daigo ITO, Chie KAWAMURA, Kotaro MIZUNO
  • Publication number: 20200365937
    Abstract: An all solid battery includes: an oxide-based solid electrolyte layer; a first electrode provided on a first main face of the solid electrolyte layer; a second electrode provided on a second main face of the solid electrolyte layer, wherein the solid electrolyte layer is a sintered structure of solid electrolyte powder, wherein the solid electrolyte powder has D10% diameter of 0.05 ?m or more and 0.6 ?m or less, D50% diameter of 0.08 ?m or more and 1.5 ?m or less, D90% diameter of 4 ?m or less, and a BET value of 3 m2/g or more and 20 m2/g or less.
    Type: Application
    Filed: April 29, 2020
    Publication date: November 19, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Chie KAWAMURA, Daigo ITO, Sachie TOMIZAWA
  • Publication number: 20200313232
    Abstract: 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: Application
    Filed: March 16, 2020
    Publication date: October 1, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Chie Kawamura, Masashi Sekiguchi, Daigo Ito, Takato Satoh, Sachie Tomizawa
  • Publication number: 20200313233
    Abstract: 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: Application
    Filed: March 18, 2020
    Publication date: October 1, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Sachie TOMIZAWA, Daigo ITO, Chie KAWAMURA, Masashi SEKIGUCHI, Takato SATOH
  • Publication number: 20200313230
    Abstract: An all-solid battery includes: a multilayer chip having a substantially rectangular parallelepiped shape and including solid electrolyte layers and electrodes alternately stacked, the electrodes being alternately exposed to two edge faces facing each other of the multilayer chip, wherein cover layers are provided between two faces, which face in a stacking direction of the solid electrolyte layers and the electrodes, of four faces other than the two edge faces of the multilayer chip and a cell reaction region where two adjacent electrodes exposed to different edge faces face each other across the solid electrolyte layer, and an active material layer containing an electrode active material is provided between the cover layers and the cell reaction region, no cell reaction occurring between the active material layer and an outermost electrode in the cell reaction region, the solid electrolyte layer being located between the active material layer and the cell reaction region.
    Type: Application
    Filed: February 3, 2020
    Publication date: October 1, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Daigo ITO, Takato SATO, Sachie TOMIZAWA, Chie KAWAMURA, Masashi SEKIGUCHI
  • Publication number: 20200106088
    Abstract: An all solid battery includes: a first electrode layer that includes a positive electrode active material and a Li—La—Ti—O-based oxide; a second electrode layer that includes a positive electrode active material and a Li—La—Ti—O-based oxide; and a solid electrolyte layer that includes an oxide-based solid electrolyte and is sandwiched by the first electrode layer and the second electrode layer.
    Type: Application
    Filed: September 16, 2019
    Publication date: April 2, 2020
    Inventors: Daigo ITO, Takato SATOH, Sachie TOMIZAWA, Chie KAWAMURA
  • Publication number: 20200106129
    Abstract: 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: Application
    Filed: September 16, 2019
    Publication date: April 2, 2020
    Inventors: Takato SATOH, Daigo ITO, Sachie TOMIZAWA, Chie KAWAMURA
  • Publication number: 20200091522
    Abstract: An all solid battery includes: a solid electrolyte layer of which a main component is phosphoric acid salt-based solid electrolyte; a positive electrode layer that is formed on a first main face of the solid electrolyte layer; and a negative electrode layer that is formed on a second main face of the solid electrolyte layer, wherein the positive electrode layer includes a positive electrode active material and a solid electrolyte, wherein a discharge capacity of the solid electrolyte of the positive electrode layer is 20% to 50% on a presumption that a discharge capacity of the positive electrode active material is 100%.
    Type: Application
    Filed: September 11, 2019
    Publication date: March 19, 2020
    Inventors: Daigo ITO, Takato SATOH, Sachie TOMIZAWA, Chie KAWAMURA
  • Publication number: 20200083563
    Abstract: 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: Application
    Filed: September 4, 2019
    Publication date: March 12, 2020
    Inventors: Chie KAWAMURA, Sachie TOMIZAWA, Daigo ITO, Takato SATOH
  • Publication number: 20200083567
    Abstract: A manufacturing method of an all solid battery includes: preparing a multilayer structure in which first coated electric collector paste including Pd, first coated electrode paste including carbon, a green sheet including phosphoric acid salt-based solid electrolyte grains, second coated electrode paste including carbon and second coated electric collector paste including Pd are stacked in this order; and firing the multilayer structure within an oxygen partial pressure range from 5×10?22 atm or more and 2×10?13 atm or less.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 12, 2020
    Inventors: Sachie TOMIZAWA, Daigo ITO, Chie KAWAMURA, Takato SATOH
  • Publication number: 20190305369
    Abstract: 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: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Inventors: Daigo ITO, Takato SATOH, Sachie TOMIZAWA, Chie KAWAMURA
  • Publication number: 20190131654
    Abstract: 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: Application
    Filed: October 31, 2018
    Publication date: May 2, 2019
    Inventors: Daigo ITO, Takato SATOH, Sachie TOMIZAWA, Chie KAWAMURA
  • Publication number: 20190131616
    Abstract: An all solid battery includes: a solid electrolyte layer including an oxide-based electrolyte; a first electrode layer that is formed on a first face of the solid electrolyte layer and includes a ceramic grain; and a second electrode layer that is formed on a second face of the solid electrolyte layer and includes a ceramic grain, wherein at least one of the first electrode layer and the second electrode layer includes a micro particle carbon and a board-shaped carbon.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 2, 2019
    Inventors: Sachie TOMIZAWA, Daigo ITO