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).

  • 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: 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: 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: 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: 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: 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
  • Patent number: 9979013
    Abstract: An electrode material includes Fe-containing olivine-structured LixAyDzPO4 (wherein A represents one or more elements selected from the group consisting of Co, Mn, Ni, Cu, and Cr; D represents one or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y, and rare earth elements; 0<x?2; 0<y?1; and 0?z?1.5) particles that are coated with a carbon coating film, in which an abundance of Fe is 0.01 to 0.1 mol with respect to 1 mol of LixAyDzPO4, and an abundance ratio (Fe/(Fe+A+D)) of Fe on surfaces of the LixAyDzPO4 particles is 0.02 to 0.25.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: May 22, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kenta Ooishi, Takao Kitagawa, Kouji Oono, Satoru Oshitari
  • Publication number: 20180062165
    Abstract: An electrode material made of a carbonaceous-coated electrode active material having primary particles of an electrode active material and aggregates of the primary particles and a carbonaceous film that coats the primary particles of the electrode active material and the aggregates of the primary particles, in which an average particle diameter of the carbonaceous-coated electrode active material is 30 nm or more and 200 nm or less, a crystallite diameter obtained from a full width at half maximum of a (020) plane in an X-ray diffraction measurement is 30 nm or more and 100 nm or less, a specific surface area obtained using a BET method is 10 m2/g or more and 25 m2/g or less, and a carbon content is 0.5% by mass or more and 2.5% by mass or less.
    Type: Application
    Filed: March 20, 2017
    Publication date: March 1, 2018
    Inventors: Kouji OONO, Takao KITAGAWA
  • Publication number: 20170237121
    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: Application
    Filed: September 29, 2016
    Publication date: August 17, 2017
    Inventors: KOUJI OONO, TAKAO KITAGAWA
  • Patent number: 9722250
    Abstract: An electrode material including electrode active material particles and a carbonaceous film layer coating surfaces of the electrode active material particles and including a metal oxide, a content ratio of the metal oxide in the carbonaceous film layer being 5% by mass to 70% by mass. A method for manufacturing an electrode material, in which electrode active material particles, a metal salt or metal alkoxide containing any one or more metal atoms selected from a group consisting of Al, Zr, Si, and Ti, and an organic compound which is a precursor of carbon are mixed so that a total blending amount of the metal salt or metal alkoxide satisfies that an amount of a metal oxide in the carbonaceous film layer when the metal salt or metal alkoxide is all changed to the metal oxide is 5% by mass to 70% by mass, and are heated in a non-oxidative atmosphere.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: August 1, 2017
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Kenta Ooishi, Takao Kitagawa, Masataka Oyama, Satoru Oshitari, Ryuuta Yamaya
  • Publication number: 20170092938
    Abstract: An electrode material tor a lithium-ion rechargeable battery of the present invention includes inorganic particles represented by General Formula LiFexMn1-x-yMyPO4 (0.05?x?1.0, 0?y?0.14; here, M represents at least one element selected from Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements) and a carbonaceous film coating surfaces of the inorganic particles, and at least one peak of a micropore diameter distribution is present in a range of 0.4 nm to 5.0 nm. An electrode for a lithium-ion rechargeable battery of the present invention includes the electrode material for a lithium-ion rechargeable battery of the present invention. A lithium-ion rechargeable battery of the present invention includes a cathode, an anode, and a non-aqueous electrolyte, in which the electrode for a lithium-ion rechargeable battery of the present invention is used as the cathode.
    Type: Application
    Filed: January 28, 2016
    Publication date: March 30, 2017
    Inventors: Kouji OONO, Hirofumi YASUMIISHI, Takao KITAGAWA
  • Publication number: 20170092937
    Abstract: Provided are an electrode material for a lithium-ion rechargeable battery including core particles of an active material and a carbonaceous film, in which a powder resistance is 150 ?·cm or less, and a lithium-ion rechargeable battery produced using the electrode material and a lithium metal exhibits a difference between a sum of a charge capacity with an upper limit voltage of 4.2 V and the lithium-ion rechargeable battery charged at a constant current and a charge capacity with the lithium-ion rechargeable battery charged at a constant voltage for seven days at 4.2 V after the constant current charging and a discharge capacity with the lithium-ion rechargeable battery discharged at a constant current to 2 V after the constant voltage charging reaches 25 mAh/g or less, a method for manufacturing the electrode material, an electrode including the electrode material, and a lithium-ion rechargeable battery including the electrode as a cathode.
    Type: Application
    Filed: January 14, 2016
    Publication date: March 30, 2017
    Inventors: Masataka OYAMA, Kouji OONO, Takao KITAGAWA
  • Patent number: 9496554
    Abstract: Provided is a positive electrode active material for lithium ion batteries, which may be in the form of fine particles with good crystallinity and high purity by suppressing grain growth, and which is capable of improving the charge and discharge capacity and high-rate characteristics, a production method thereof, an electrode for lithium ion batteries, and a lithium ion battery. The positive electrode active material for lithium ion batteries of the invention is a positive electrode active material for lithium ion batteries which are formed from LiMPO4 (provided that, M represents one or more kinds selected from a group consisting of Mn, Co, and Ni). In an X-ray diffraction pattern, a ratio I(020)/I(200) of the X-ray intensity I(020) of a (020) plane around a diffraction angle 2? of 29° to the X-ray intensity I(200) of a (200) plane around a diffraction angle 2? of 17° is 3.00 to 5.00, and a specific surface area is 15 m2/g to 50 m2/g.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: November 15, 2016
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kouji Oono, Satoru Oshitari
  • Publication number: 20160190589
    Abstract: An electrode material including electrode active material particles and a carbonaceous film layer coating surfaces of the electrode active material particles and including a metal oxide, a content ratio of the metal oxide in the carbonaceous film layer being 5% by mass to 70% by mass. A method for manufacturing an electrode material, in which electrode active material particles, a metal salt or metal alkoxide containing any one or more metal atoms selected from a group consisting of Al, Zr, Si, and Ti, and an organic compound which is a precursor of carbon are mixed so that a total blending amount of the metal salt or metal alkoxide satisfies that an amount of a metal oxide in the carbonaceous film layer when the metal salt or metal alkoxide is all changed to the metal oxide is 5% by mass to 70% by mass, and are heated in a non-oxidative atmosphere.
    Type: Application
    Filed: April 27, 2015
    Publication date: June 30, 2016
    Inventors: Kouji OONO, Kenta OOISHI, Takao KITAGAWA, Masataka OYAMA, Satoru OSHITARI, Ryuuta YAMAYA