Patents by Inventor Satoru Oshitari

Satoru Oshitari 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: 9865869
    Abstract: An electrode material for a lithium-ion secondary battery of the present invention includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4, have an orthorhombic crystal structure, and have a space group of Pmna, in which a mis-fit value [(1?(b2×c2)/(b1×c1))×100] of a bc plane which is computed from lattice constants b1 and c1 of the LiFexMn1-w-x-y-zMgyCazAwPO4 and lattice constants b2 and c2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 by means of an oxidation treatment using nitrosonium tetrafluoroborate in acetonitrile is 1.32% or more and 1.85% or less.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 9, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Ryuuta Yamaya
  • Publication number: 20170288213
    Abstract: An electrode material for a lithium-ion secondary battery of the present invention includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4, have an orthorhombic crystal structure, and have a space group of Pmna, in which a mis-fit value [(1?(b2×c2)/(b1×c1))×100] of a be plane which is computed from lattice constants b1 and c1 of the LiFexMn1-w-x-y-zMgyCazAwPO4 and lattice constants b2 and c2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 by means of an oxidation treatment using nitrosonium tetrafluoroborate in acetonitrile is 1.32% or more and 1.85% or less.
    Type: Application
    Filed: September 30, 2016
    Publication date: October 5, 2017
    Inventors: SATORU OSHITARI, MASATAKA OYAMA, RYUUTA YAMAYA
  • Patent number: 9780372
    Abstract: [Problems] To provide an electrode material for a lithium-ion rechargeable battery having a high mass energy density at a low temperature or in a high-speed charge and discharge. [Means for Solving the Problems] An electrode material for a lithium-ion rechargeable battery includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4 (here, A represents at least one element selected from Co, Ni, Zn, Al, and Ga, 0?w?0.05, 0.05?x?0.35, 0.01?y?0.10, and 0.0001?z?0.002), have an orthorhombic crystal structure, and have a space group of Pmna, in which a change ratio (V1?V2)/V1 between a lattice volume V1 of LiFexMn1-w-x-y-zMgyCazAwPO4 and a lattice volume V2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by chemically deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 is in a range of 0.06 to 0.09.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 3, 2017
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Ryuuta Yamaya
  • 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
  • Patent number: 9692054
    Abstract: There are provided an electrode material for a lithium ion secondary battery having a high discharge capacity and a high mass energy density at a low temperature or at a high-speed charge and discharge, an electrode for a lithium ion secondary battery, and a lithium ion secondary battery. An electrode material for a lithium ion secondary battery of the present invention includes an electrode active material made of LiFexMn1?x?yMyPO4 (0.220?x?0.350, 0.0050?y?0.018) in which the M is either or both of Co and Zn, the electrode material has an orthorhombic crystal structure, a space group is Pnma, values of crystal lattice constants a, b, and c satisfy 10.28 ??a?10.42 ?, 6.000 ??b?6.069 ?, and 4.710 ??c?4.728 ?, and lattice volume V satisfies 289.00 ?3?V?298.23 ?3.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: June 27, 2017
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Ryuuta Yamaya
  • Patent number: 9692046
    Abstract: An electrode material for a lithium-ion secondary battery of the present invention includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4 (here, A represents at least one element selected from the group consisting of Co, Ni, Zn, Al, and Ga, 0.05?x?0.35, 0.01?y?0.08, 0.0001?z?0.001, and 0?w?0.02) and have an orthorhombic crystal structure, a 0.1 CA capacity during constant-current charge in a range of 4.0 V to 4.3 V is 100 mAh/g or more, and a ratio (1 CA/0.1 CA) of a 1 CA capacity to the 0.1 CA capacity during the constant-current charge in the range of 4.0 V to 4.3 V is 0.60 or more.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: June 27, 2017
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Satoru Oshitari, Masataka Oyama, Naoyuki Kurosawa, Ryuuta Yamaya
  • Publication number: 20170092941
    Abstract: [Problems] To provide an electrode material for a lithium-ion rechargeable battery capable of improving the battery characteristics, durability, and stability of a lithium-ion rechargeable battery, an electrode for a lithium-ion rechargeable battery, and a lithium-ion rechargeable battery. [Means] An electrode material for a lithium-ion rechargeable battery of the present invention is an electrode material for a lithium-ion rechargeable battery formed by coating the surface of an electrode active material represented by General Formula LixAyDzPO4 (here, A represents at least one element selected from Co, Mn, Ni, Fe, Cu, and Cr, D represents at least one element selected from Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, 1?x?1.1, 0<y?1, 0?z<1, 0.9<y+z?1) with a carbonaceous film, in which a saturated adsorbed moisture amount in a carbonaceous film single body, which is detected in a temperature range of room temperature or more and 250° C.
    Type: Application
    Filed: March 21, 2016
    Publication date: March 30, 2017
    Inventors: RYUUTA YAMAYA, SATORU OSHITARI, MASATAKA OYAMA
  • Publication number: 20170092933
    Abstract: An electrode material for a lithium-ion rechargeable battery of the present invention is an electrode material for a lithium-ion rechargeable battery formed by coating a surface of an electrode active material represented by General Formula LiFexMn1-x-yMyPO4 (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, 0.05?x?1.0, 0?y?0.14) with a carbonaceous film, in which an angle of repose is in a range of 35° or more and 50° or less.
    Type: Application
    Filed: February 26, 2016
    Publication date: March 30, 2017
    Inventors: Satoru OSHITARI, Masataka OYAMA, Ryuuta YAMAYA
  • Publication number: 20170092953
    Abstract: [Problems] To provide an electrode material for a lithium-ion rechargeable battery having a high mass energy density at a low temperature or in a high-speed charge and discharge. [Means for Solving the Problems] An electrode material for a lithium-ion rechargeable battery includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4 (here, A represents at least one element selected from Co, Ni, Zn, Al, and Ga, 0?w?0.05, 0.05?x?0.35, 0.01?y?0.10, and 0.0001?z?0.002), have an orthorhombic crystal structure, and have a space group of Pmna, in which a change ratio (V1?V2)/V1 between a lattice volume V1 of LiFexMn1-w-x-y-zMgyCazAwPO4 and a lattice volume V2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by chemically deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 is in a range of 0.06 to 0.09.
    Type: Application
    Filed: March 21, 2016
    Publication date: March 30, 2017
    Inventors: SATORU OSHITARI, MASATAKA OYAMA, RYUUTA YAMAYA
  • Patent number: 9508989
    Abstract: To provide a positive electrode material for lithium ion secondary batteries capable of reducing waste loss, a method of producing the same, a positive electrode for lithium ion secondary batteries and a lithium ion secondary battery which contain the above-described positive electrode material for lithium ion secondary batteries. A positive electrode material for lithium ion secondary batteries, wherein the positive electrode material includes inorganic particles whose surfaces are coated with a carbonaceous film, the inorganic particles being represented by a formula LiFexMn1-x-yMyPO4 (0.05?x?1.0, 0?y?0.14, where M represents at least one selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements), a specific surface area is 6 m2/g to 20 m2/g, a lightness L* is 0 to 40, and a chroma C* is 0 to 3.5.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: November 29, 2016
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Kazuyo Yamamoto, Ryuuta Yamaya, Satoru Oshitari
  • 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: 20160322630
    Abstract: A positive electrode material for lithium ion secondary batteries includes central particles composed of LiFexMn1-x-yMyPO4 (0.05?x?1.0, 0?y?0.14, wherein 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 that covers surfaces of the central particles, in which a specific magnetization is 0.70 emu/g or less, and an amount of water detected by a Karl Fischer titration method (coulometric titration method) in a temperature range of 100° C. or higher and 250° C. or lower is 8,000 ppm or less.
    Type: Application
    Filed: November 19, 2015
    Publication date: November 3, 2016
    Inventors: Masataka OYAMA, Akinori YAMAZAKI, Satoru OSHITARI, Ryuuta YAMAYA, Takao KITAGAWA
  • Publication number: 20160293942
    Abstract: To provide a positive electrode material for lithium ion secondary batteries capable of reducing waste loss, a method of producing the same, a positive electrode for lithium ion secondary batteries and a lithium ion secondary battery which contain the above-described positive electrode material for lithium ion secondary batteries. A positive electrode material for lithium ion secondary batteries, wherein the positive electrode material includes inorganic particles whose surfaces are coated with a carbonaceous film, the inorganic particles being represented by a formula LiFexMn1-x-yMyPO4 (0.05?x?1.0, 0?y?0.14, where M represents at least one selected from the group consisting of Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements), a specific surface area is 6 m2/g to 20 m2/g, a lightness L* is 0 to 40, and a chroma C* is 0 to 3.5.
    Type: Application
    Filed: July 10, 2015
    Publication date: October 6, 2016
    Inventors: Kazuyo YAMAMOTO, Ryuuta YAMAYA, Satoru OSHITARI
  • Publication number: 20160190583
    Abstract: There are provided an electrode material for a lithium ion secondary battery having a high discharge capacity and a high mass energy density at a low temperature or at a high-speed charge and discharge, an electrode for a lithium ion secondary battery, and a lithium ion secondary battery. An electrode material for a lithium ion secondary battery of the present invention includes an electrode active material made of LiFexMn1-x-yMyPO4 (0.220?x?0.350, 0.0050?y?0.018) in which the M is either or both of Co and Zn, the electrode material has an orthorhombic crystal structure, a space group is Pnma, values of crystal lattice constants a, b, and c satisfy 10.28 ??a?10.42 ?, 6.000 ??b?6.069 ?, and 4.710 ??c?4.728 ?, and lattice volume V satisfies 289.00 ?3?V?298.23 ?3.
    Type: Application
    Filed: August 13, 2015
    Publication date: June 30, 2016
    Inventors: Satoru OSHITARI, Masataka OYAMA, Ryuuta YAMAYA
  • Publication number: 20160190635
    Abstract: An electrode material for a lithium ion secondary battery of the present invention includes an electrode active material made of LiFexMn1-x-yMyPO4 (0.05?x?0.35, 0.005?y?0.14) in which the M is at least one selected from Co and Zn which are elements that are electrochemically inactive in a voltage range of 1.0 V to 4.3 V and have a smaller ionic radius than Mn, a crystal structure is orthorhombic, a space group is Pmna, values of crystal lattice constants a, b, and c satisfy 10.28 ??a?10.42 ?, 6.000 ??b?6.069 ?, and 4.710 ??c?4.728 ?, and lattice volume V satisfies 289.00 ?3?V?298.23 ?3.
    Type: Application
    Filed: March 27, 2015
    Publication date: June 30, 2016
    Inventors: Satoru OSHITARI, Masataka OYAMA, Ryuuta YAMAYA
  • 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
  • Publication number: 20160118661
    Abstract: A cathode material including active material particles formed of a cathode active material, in which the cathode active material is LixAyDzPO4 (here, A represents one or more metal elements selected from a group consisting of Fe, Co, Mn, Ni, Cu and Cr, D represents one or more metal elements selected from a group consisting of Mg, Ca, Sr, Ba, Ti, Zn, Ge, Sc, Y, and rare earth elements, 0<x?2, 0<y?1 and 0?z<1.5), an average valence of the metal element represented by A and the metal element represented by D are in a range of 2 to 2.02, and a particle pH of the active material particles is in a range of 6.5 to 8.5.
    Type: Application
    Filed: March 25, 2015
    Publication date: April 28, 2016
    Inventors: Satoru OSHITARI, Masataka OYAMA, Ryuuta YAMAYA
  • Publication number: 20160111712
    Abstract: A cathode material including an aggregate formed by aggregating active material particles, in which the active material particle is a particle including a cathode active material as a formation material and a carbonaceous material is provided on a surface of the particle, a ratio between a weight ratio of carbon contained in the aggregate to a BET specific surface area of the cathode material is in a range of 0.08 to 0.2, a tap density is in a range of 0.9 g/cm3 to 1.5 g/cm3, and an oil absorption amount for which N-methyl-2-pyrrolidone is used is 70 cc/100 g or less.
    Type: Application
    Filed: March 23, 2015
    Publication date: April 21, 2016
    Inventors: Masataka OYAMA, Satoru OSHITARI, Ryuuta YAMAYA
  • Publication number: 20160093888
    Abstract: A cathode material which does not easily deteriorate when used in batteries, a method for producing cathode materials, a cathode, and a lithium ion battery are provided. A cathode material including a cathode active material, in which the cathode active material is expressed by Li1+xAyDzPO4 (here, A represents one or more metal elements selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, D represents one or more metal 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<1, 0<y<1, 0?z<1.5, and 0.9<y+z?1), and, in thermogravimetric analysis in an inert gas atmosphere, when a temperature is increased in a temperature range from 100° C. to 300° C. at a temperature-increase rate of 10° C./minute, a weight loss ratio in the temperature range is 0.3% by weight or less.
    Type: Application
    Filed: March 10, 2015
    Publication date: March 31, 2016
    Inventors: Masataka OYAMA, Satoru OSHITARI, Ryuuta YAMAYA
  • Publication number: 20160079587
    Abstract: Provided is a positive electrode active material for lithium ion batteries, which is capable of realizing stability and safety at a high voltage, a high energy density, high load characteristics, and long-term cycle characteristics by controlling a crystal shape of LiMnPO4 particles having a crystal structure very suitable for Li diffusion or controlling an average primary particle size, 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 is formed from LiMnPO4. Values of lattice constants a, b, and c, which are calculated from an X-ray diffraction pattern, satisfy 10.41 ?<a?10.43 ?, 6.070 ?<b?6.095 ?, and 4.730 ?<C?4.745 ?, and an average particle size is 10 to 100 nm.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 17, 2016
    Inventors: Kouji OONO, Satoru OSHITARI