Patents by Inventor Shun Nomura

Shun Nomura 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: 20220336795
    Abstract: A non-aqueous electrolyte secondary battery that is an exemplary embodiment of the present invention, wherein a positive electrode contains a lithium-transition metal composite oxide containing Ni, Al and Sr as a positive electrode active substance. In the lithium-transition metal composite oxide, the content of Ni is 80-95 mol %, the content of Al is 8.0 mol % or less, the content of Sr is 1.2 mol % or less, and the proportion of metallic elements other than Li that are present in a Li layer is 0.5-2.0 mol %. A negative electrode has a Sr-containing coating film formed on a surface of a negative electrode mixture layer. The content of Sr in the coating film is 20-400 ppm relative to the total mass of the negative electrode mixture layer and the coating film.
    Type: Application
    Filed: July 30, 2020
    Publication date: October 20, 2022
    Applicants: Panasonic Corporation, SANYO Electric Co., Ltd.
    Inventors: Yoshinori Aoki, Takeshi Ogasawara, Shun Nomura
  • Publication number: 20220293931
    Abstract: This positive electrode active material for nonaqueous electrolyte secondary batteries comprises a lithium-transition metal composite oxide and a surface modification layer. The lithium transition metal composite oxide contains at least Al and 80 mol % or more Ni with reference to the total number of moles of metal elements excluding Li, and the surface modification layer contains at least Sr and is formed on the surface of primary particles of the lithium-transition metal composite oxide.
    Type: Application
    Filed: July 28, 2020
    Publication date: September 15, 2022
    Applicants: Panasonic Corporation, SANYO Electric Co., Ltd.
    Inventors: Katsuya Inoue, Takeshi Ogasawara, Yoshinori Aoki, Shun Nomura
  • Publication number: 20220255074
    Abstract: Provided is a cathode active material for a non-aqueous-electrolyte secondary battery, the cathode active material containing a lithium composite oxide that has a layered structure containing a Li layer and that is represented by general formula LiaNi?Al?Co?M?SrxO2-w (in the formula, 0.95<a<1.05, 0.85???0.95, 0<??0.08, 0???0.1, 0???0.15, 0<x?0.015, 0?w<0.05, ?+?+?+?=1, and M is at least one type of element selected from Mn, Fe, Ti, Si, Nb, Zr, Mo, and Zn), wherein the proportions of metal elements present in the Li layer excluding Li are in the range of 1-2.5 mol % with respect to the total molar quantity of metal elements in the lithium composite oxide excluding Li.
    Type: Application
    Filed: June 23, 2020
    Publication date: August 11, 2022
    Applicants: Panasonic Corporation, SANYO Electric Co., Ltd.
    Inventors: Yoshinori Aoki, Shun Nomura, Takeshi Ogasawara
  • Publication number: 20220250938
    Abstract: Provided is a cathode material, a preparation method thereof, and a secondary lithium battery. The cathode material is characterized in that a chemical formula of the cathode material is LibNi1-x-yCoxAlyMzO2, where 0.95?b?1.10, 0?x?0.15, 0.01?y?0.1, 0<z?0.05, and an M element is a metal element; the M element is distributed in interior and surface of the cathode material, the M element distributed in the interior of the cathode material is presented in a doped form, and the M element distributed in the surface of the cathode material is presented in a form of a coating layer formed of at least one of M oxide or lithium-M composite oxide; and a molar ratio of the M element in the interior to the M element in the surface is greater than 0.5. The cathode material provided has good high-rate capability and thermal stability.
    Type: Application
    Filed: March 24, 2021
    Publication date: August 11, 2022
    Inventors: Youyuan HUANG, Shunyi YANG, Xiong SONG, Hongxu ZHANG, Liang LUO, Shun NOMURA, Koki MORITA, Takuya SHINOMIYA
  • Publication number: 20210050588
    Abstract: A nonaqueous electrolyte secondary battery (10) in an example embodiment includes a positive electrode (11) having a lithium metal composite oxide, and a negative electrode (12) having graphite. The lithium metal composite oxide includes first composite oxide particles which are secondary particles formed by aggregation of primary particles having an average particle size of 50 nm to 5 ?m, and second composite oxide particles which are non-aggregated particles having an average particle size of 2 ?m to 20 ?m. The positive electrode (11) has lower initial charge/discharge efficiency than the initial charge/discharge efficiency of the negative electrode (12).
    Type: Application
    Filed: February 1, 2019
    Publication date: February 18, 2021
    Applicants: Panasonic Corporation, SANYO Electric Co., Ltd.
    Inventors: Yukihiro Oki, Shun Nomura, Atsushi Ogata
  • Publication number: 20150207141
    Abstract: The present invention provides a nonaqueous electrolyte secondary battery which can significantly improve battery characteristics by suppression of decrease in discharge capacity at an initial cycle stage and by improvement in high-temperature charge storage characteristics. A negative electrode for a nonaqueous electrolyte secondary battery has a negative electrode mixture layer including a negative electrode active material which contains SiOx (0.8?x?1.2) and graphite; and a negative electrode collector having at least one surface on which the negative electrode mixture layer is formed, and on the surface of the SiOx, a coating film derived from a compound having an isocyanate group is formed.
    Type: Application
    Filed: August 26, 2013
    Publication date: July 23, 2015
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Shun Nomura, Taisuke Yamamoto, Hidekazu Yamamoto, Atsushi Kaiduka, Naoki Imachi
  • Publication number: 20140017526
    Abstract: A non-aqueous electrolyte secondary battery system includes a non-aqueous electrolyte secondary battery and a charging control system which has a function of detecting the voltage of the non-aqueous electrolyte secondary battery and disconnecting a charging circuit. The non-aqueous electrolytic solution contains a non-aqueous solvent having a viscosity of 0.6 cP or less at 25° C. in an amount of 35 to 80 vol % inclusive as a non-aqueous solvent and also contains hexamethylene diisocyanate, and the charging control system stops charging when the potential of the positive electrode of the non-aqueous electrolyte secondary battery is 4.35 to 4.6 V inclusive based on lithium. Thus the non-aqueous electrolyte secondary battery system equipped with the non-aqueous electrolyte secondary battery having high charging potential and excellent high-temperature cycling characteristics can be provided.
    Type: Application
    Filed: March 21, 2012
    Publication date: January 16, 2014
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Masato Iwanaga, Atsushi Kaiduka, Shun Nomura, Kota Ogawa, Naoya Tsukamoto
  • Publication number: 20130330628
    Abstract: The present invention provides a positive electrode active material for a nonaqueous electrolyte secondary battery which is capable of improving an initial discharge capacity and suppressing a decrease in discharge voltage and a decrease in battery capacity even in repeated charge-discharge cycles, a positive electrode using the active material, and a nonaqueous electrolyte secondary battery using the positive electrode. The positive electrode active material includes a particle 21 of a lithium transition metal composite oxide containing lithium, nickel, and manganese and having a layered structure; and a particle 22 of a compound of at least one element adhered to a portion of the surface of the particle 21 and selected from the rare earth elements with atomic numbers 59 to 71.
    Type: Application
    Filed: January 23, 2012
    Publication date: December 12, 2013
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Kazuhiro Hasegawa, Takeshi Ogasawara, Daizo Jito, Shun Nomura, Hiroyuki Fujimoto
  • Publication number: 20130316227
    Abstract: The present invention is to provide a non-aqueous electrolyte secondary battery that can suppress a decrease in discharge performance and a decrease in residual capacity after storage at charged state under high temperature. The non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a non-aqueous electrolyte, and a separator provided between the positive electrode and the negative electrode, the positive electrode active material includes lithium cobaltate and an erbium compound 22 fixed to at least part of the surface of this lithium cobaltate 21, and the non-aqueous electrolyte contains 1,3-bis(isocyanatomethyl)cyclohexane.
    Type: Application
    Filed: February 27, 2012
    Publication date: November 28, 2013
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Shun Nomura, Kazuhiro Hasegawa, Takeshi Ogasawara, Hiroyuki Fujimoto