Patents by Inventor Kouji Oono

Kouji Oono 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).

  • Patent number: 11769875
    Abstract: An electrode material including a carbonaceous-coated electrode active material having primary particles of the electrode active material and secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which a specific surface area, which is obtained using a nitrogen adsorption method, is 4 m2/g or more and 40 m2/g or less, a volume of micropores per unit mass is 0.05 cm3/g or more and 0.3 cm3/g or less, and an average micropore diameter, which is obtained from the volume of the micropores per unit mass and the specific surface area, is 26 nm or more and 90 nm or less.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: September 26, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Kouji Oono, Satoru Oshitari, Tsutomu Nozoe, Masataka Oyama
  • Patent number: 11699807
    Abstract: The positive electrode material for lithium ion secondary batteries includes a mixture including a positive electrode active material in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less and a NASICON-type compound in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: July 11, 2023
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Satoru Oshitari, Kouji Oono, Tsutomu Nozoe
  • Publication number: 20230077307
    Abstract: A positive electrode active material that is used in a high-temperature operation type lithium ion solid secondary battery, wherein the positive electrode active material is made of oxide particles, which contains a first transition element and does not include an alkali metal.
    Type: Application
    Filed: March 28, 2022
    Publication date: March 9, 2023
    Applicant: Sumitomo Metal Mining Co., Ltd.
    Inventors: Kouji OONO, Satoru OSHITARI, Shinichi TANAKA
  • Patent number: 11289690
    Abstract: An electrode material including a carbonaceous-coated electrode active material having primary particles of an electrode active material, secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which, in the electrode material, when ten random 180 nm×180 nm views are observed using an electron microscope at a magnification of 100,000 times, the number of free carbon aggregates is three or less, and the number of protrusions twice or more as thick as the carbonaceous film is three or less.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: March 29, 2022
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Satoru Oshitari, Masataka Oyama
  • Patent number: 11245110
    Abstract: The positive electrode material for a lithium ion polymer battery of the present invention is active material particles including core particles represented by General Formula LixAyDzPO4 and the carbonaceous film that coats surfaces of the core particles, wherein a paste including the active material particles has a viscosity of 5,000 mPa·s or less when a viscosity of the paste is measured at a shear rate of 4.0 [1/s], wherein the paste is a mixture of the active material particles, an ion-conductive polymer, a conductive auxiliary agent and a solvent, in which the active material particles, the ion-conductive polymer and the conductive auxiliary agent are included in the paste in a mass ratio of 66:30:4, and a total solid content of the paste is 40% by mass.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: February 8, 2022
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventor: Kouji Oono
  • Patent number: 11228035
    Abstract: A positive electrode material for a lithium ion secondary battery includes an olivine-type phosphate-based compound represented by General Formula LixAyDzPO4 and carbon, and, in transmission electron microscopic observation of a cross section of a secondary particle that is an agglomerate of primary particles of the olivine-type phosphate-based compound, a 300-point average value of filling rates of the carbon that fills insides of voids having a diameter of 5 nm or larger that are formed by the primary particles is 30 to 70%. A is any one of Co, Mn, Ni, Fe, Cu, and Cr, D is any one of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, and x, y, and z satisfy 0.9<x<1.1, 0<y?1.0, 0?z<1.0, and 0.9<y+z<1.1.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: January 18, 2022
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Kouji Oono, Tsutomu Nozoe
  • Patent number: 11189826
    Abstract: An electrode material for a lithium ion secondary battery of the present invention includes an electrode active material represented by LiFexMn1-w-x-yMgyAwPO4 and a carbonaceous film coating a surface of the electrode active material, a particle diameter D10 of secondary particles is 0.5 ?m or more, a particle diameter D90 of the secondary particles is 25 ?m or less, and a ratio (O/I) of an average value of thicknesses I of the carbonaceous film on the surfaces of the primary particles in a range of 0.3 ?m or less from a center of the secondary particle at 300 measurement points to an average value of thicknesses O of the carbonaceous film on the surfaces of the primary particles in a range of 0.3 ?m or less from an outermost surface of the secondary particle at 300 measurement points is 0.85 or more and less than 1.00.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: November 30, 2021
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Kouji Oono
  • Patent number: 11171321
    Abstract: An electrode material having an electrode active material and a pyrolytic carbonaceous electron-conducting film that coats a surface of the electrode active material, in which an amount of a surface acid of the electrode material, which is determined by a back-titration method using tetrabutylammonium hydroxide, is 1 ?mol/m2 or more and 5 ?mol/m2 or less per surface area of the electrode material.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: November 9, 2021
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Takao Kitagawa, Tetsuya Nakabeppu
  • Publication number: 20210305619
    Abstract: The lithium ion polymer battery includes: a positive electrode that includes at least a positive electrode material which is capable of desorbing lithium ions when the battery is charged; and a negative electrode which includes a current collector and an ionic conductive polymer layer which is provided on the current collector.
    Type: Application
    Filed: September 25, 2020
    Publication date: September 30, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventor: Kouji OONO
  • Publication number: 20210305618
    Abstract: The positive electrode material for lithium ion secondary batteries includes a mixture including a positive electrode active material in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less and a NASICON-type compound in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less.
    Type: Application
    Filed: September 25, 2020
    Publication date: September 30, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru OSHITARI, Kouji OONO, Tsutomu NOZOE
  • Publication number: 20210296649
    Abstract: A positive electrode material for a lithium ion secondary battery includes an olivine-type phosphate-based compound represented by General Formula LixAyDzPO4 and carbon, and, in transmission electron microscopic observation of a cross section of a secondary particle that is an agglomerate of primary particles of the olivine-type phosphate-based compound, a 300-point average value of filling rates of the carbon that fills insides of voids having a diameter of 5 nm or larger that are formed by the primary particles is 30 to 70%. A is any one of Co, Mn, Ni, Fe, Cu, and Cr, D is any one of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, and x, y, and z satisfy 0.9<x<1.1, 0<y?1.0, 0?z<1.0, and 0.9<y+z<1.1.
    Type: Application
    Filed: September 24, 2020
    Publication date: September 23, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru OSHITARI, Kouji OONO, Tsutomu NOZOE
  • Publication number: 20210098779
    Abstract: The positive electrode material for a lithium ion polymer battery of the present invention is active material particles including core particles represented by General Formula LixAyDzPO4 and the carbonaceous film that coats surfaces of the core particles, wherein a paste including the active material particles has a viscosity of 5,000 mPa·s or less when a viscosity of the paste is measured at a shear rate of 4.0 [1/s], wherein the paste is a mixture of the active material particles, an ion-conductive polymer, a conductive auxiliary agent and a solvent, in which the active material particles, the ion-conductive polymer and the conductive auxiliary agent are included in the paste in a mass ratio of 66:30:4, and a total solid content of the paste is 40% by mass.
    Type: Application
    Filed: February 24, 2020
    Publication date: April 1, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventor: Kouji OONO
  • Patent number: 10804529
    Abstract: An electrode material including a carbonaceous-coated electrode active material having primary particles of an electrode active material and secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which a proportion of a volume of micropores having a micropore diameter of 50 nm or less in a volume of micropores having a micropore diameter of 300 nm or less, which is obtained using a nitrogen adsorption method, is 40% or more.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: October 13, 2020
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Satoru Oshitari, Masataka Oyama
  • Publication number: 20200287209
    Abstract: An electrode material including a carbonaceous-coated electrode active material having primary particles of the electrode active material and secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which a specific surface area, which is obtained using a nitrogen adsorption method, is 4 m2/g or more and 40 m2/g or less, a volume of micropores per unit mass is 0.05 cm3/g or more and 0.3 cm3/g or less, and an average micropore diameter, which is obtained from the volume of the micropores per unit mass and the specific surface area, is 26 nm or more and 90 nm or less.
    Type: Application
    Filed: September 4, 2019
    Publication date: September 10, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Satoru Oshitari, Tsutomu Nozoe, Masataka Oyama
  • Publication number: 20200106086
    Abstract: An electrode material including a carbonaceous-coated electrode active material having primary particles of an electrode active material and secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which a proportion of a volume of micropores having a micropore diameter of 50 nm or less in a volume of micropores having a micropore diameter of 300 nm or less, which is obtained using a nitrogen adsorption method, is 40% or more.
    Type: Application
    Filed: February 22, 2019
    Publication date: April 2, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji OONO, Satoru OSHITARI, Masataka OYAMA
  • Publication number: 20200106087
    Abstract: An electrode material including a carbonaceous-coated electrode active material having primary particles of an electrode active material, secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which, in the electrode material, when ten random 180 nm×180 nm views are observed using an electron microscope at a magnification of 100,000 times, the number of free carbon aggregates is three or less, and the number of protrusions twice or more as thick as the carbonaceous film is three or less.
    Type: Application
    Filed: March 26, 2019
    Publication date: April 2, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji OONO, Satoru OSHITARI, Masataka OYAMA
  • Publication number: 20200106092
    Abstract: An electrode material for a lithium ion secondary battery of the present invention includes an electrode active material represented by LiFexMn1-w-x-yMgyAwPO4 and a carbonaceous film coating a surface of the electrode active material, a particle diameter D10 of secondary particles is 0.5 ?m or more, a particle diameter D90 of the secondary particles is 25 ?m or less, and a ratio (O/I) of an average value of thicknesses I of the carbonaceous film on the surfaces of the primary particles in a range of 0.3 ?m or less from a center of the secondary particle at 300 measurement points to an average value of thicknesses of the carbonaceous film on the surfaces of the primary particles in a range of 0.3 ?m or less from an outermost surface of the secondary particle at 300 measurement points is 0.85 or more and less than 1.00.
    Type: Application
    Filed: March 15, 2019
    Publication date: April 2, 2020
    Inventors: Satoru OSHITARI, Masataka Oyama, Kouji Oono
  • Publication number: 20190386290
    Abstract: An electrode material having an electrode active material and a pyrolytic carbonaceous electron-conducting film that coats a surface of the electrode active material, in which an amount of a surface acid of the electrode material, which is determined by a back-titration method using tetrabutylammonium hydroxide, is 1 ?mol/m2 or more and 5 ?mol/m2 or less per surface area of the electrode material.
    Type: Application
    Filed: February 22, 2019
    Publication date: December 19, 2019
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji OONO, Takao KITAGAWA, Tetsuya NAKABEPPU
  • Patent number: 10483589
    Abstract: A lithium-ion secondary battery of the present invention includes a cathode including an electrode material having electrode active material particles and an oxide coat and a carbonaceous film which coat surfaces of the electrode active material particles, an anode including a carbon-based active material, and an electrolytic solution, and the electrolytic solution does not substantially include additives for stabilizing a coat formed on a surface of the anode.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 19, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Takao Kitagawa
  • Publication number: 20180277846
    Abstract: A cathode material for a lithium-ion secondary battery of the present invention includes active material secondary particles formed by aggregating central particles including primary particles of a cathode active material represented by General Formula LiaAxBO4 (here, A represents at least one element selected from the group consisting of Mn, Fe, Co, and Ni, B represents at least one element selected from the group consisting of P, Si, and S, 0?a<4, and 0<x<1.5) and a carbonaceous film, wherein at least a portion of surfaces of the primary particles are coated with the carbonaceous film, and the carbonaceous film is obtained by thermal decomposition of an organic compound, in which, in a charge and discharge cycle test at 60° C.
    Type: Application
    Filed: September 20, 2017
    Publication date: September 27, 2018
    Inventors: Kouji OONO, Hirofumi Yasumiishi, Masataka OYAMA, Takao KITAGAWA