Patents by Inventor Hideo Sakata

Hideo Sakata 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: 20220013764
    Abstract: A electrochemical device negative electrode includes: a negative electrode core material; and a negative electrode material layer supported on the negative electrode core material. The negative electrode material layer contains a carbon material. And a surface layer portion of the negative electrode material layer has a lithium carbonate-containing region.
    Type: Application
    Filed: November 27, 2019
    Publication date: January 13, 2022
    Inventors: YUSUKE NAKAMURA, HIDEO SAKATA, TOSHIAKI SHIMIZU
  • Patent number: 11201353
    Abstract: An electrolyte solution applicable to high-voltage electrochemical devices and capable of improving the cycle characteristics of electrochemical devices even at high voltage, and an electrochemical device. The electrolyte solution contains a fluorinated diether and a metal salt having a specific structure. The fluorinated diether is represented by CFR11R12—O—CH2CH2—O—R13, wherein R11 and R12 are each individually H, CH3, F, CH2F, CHF2, or CF3; and R13 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: December 14, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu Kinoshita, Kenzou Takahashi, Hideo Sakata, Shigeaki Yamazaki, Hiroyuki Arima, Shinichi Kinoshita
  • Patent number: 11171360
    Abstract: An electrolyte solution applicable to high-voltage electrochemical devices and capable of improving the cycle characteristics of electrochemical devices even at high voltage, and an electrochemical device. The electrolyte solution contains a fluorinated diether and a metal salt having a specific structure. The fluorinated diether is represented by CFR11R12—O—CH2CH2—O—R13, wherein R11 and R12 are each individually H, CH3, F, CH2F, CHF2, or CF3; and R13 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: November 9, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu Kinoshita, Kenzou Takahashi, Hideo Sakata, Shigeaki Yamazaki, Hiroyuki Arima, Shinichi Kinoshita
  • Patent number: 11043698
    Abstract: An electrolyte solution whose residual capacity is less likely to decrease and whose percentage increase in resistance is less likely to change even after stored at high temperature. The electrolyte solution contains a compound (1) represented by the following formula (1): R11CFX11(CH2)n11COOR12 wherein R11 is H, F, a C1-C3 non-fluorinated alkyl group, or a C1-C3 fluorinated alkyl group; X11 is H or F; R12 is a C1-C3 non-fluorinated alkyl group or a C1-C3 fluorinated alkyl group; and n11 is an integer of 0 to 3; a fluorinated carbonate; and a specific additive.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 22, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Shigeaki Yamazaki, Kenzou Takahashi, Hiroyuki Arima, Hideo Sakata, Masakazu Kinoshita, Shinichi Kinoshita
  • Publication number: 20210119261
    Abstract: An electrochemical device includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and an electrolytic solution. The positive electrode active material includes a conductive polymer, and the electrolytic solution includes a lithium salt and a nonaqueous solvent. The nonaqueous solvent contains a first solvent and a second solvent. The first solvent includes ?-butyrolactone, and the second solvent includes at least one selected from the group consisting of an unsaturated cyclic carbonate ester and a cyclic carboxylic acid anhydride.
    Type: Application
    Filed: March 22, 2019
    Publication date: April 22, 2021
    Inventors: HIDEO SAKATA, YUSUKE NAKAMURA, MASATOSHI TAKESHITA, MOTOHIRO SAKATA
  • Patent number: 10978742
    Abstract: An electrolyte solution applicable to high-voltage electrochemical devices and capable of improving the cycle characteristics of electrochemical devices even at high voltage. The electrolyte solution contains a fluorinated acyclic carbonate and a metal salt having a specific structure. The fluorinated acyclic carbonate is represented by CF3—OCOO—R11 (wherein R11 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group) or CFH2—OCOO—R12 (wherein R12 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group).
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: April 13, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu Kinoshita, Kenzou Takahashi, Hideo Sakata, Shigeaki Yamazaki, Hiroyuki Arima, Shinichi Kinoshita
  • Publication number: 20210066717
    Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolytic solution. The positive electrode includes a conductive polymer, and the negative electrode includes a negative electrode material. The negative electrode material contains a graphite material, and an interlayer distance (d002) of the graphite material ranges from 0.336 nm to 0.338 nm, inclusive.
    Type: Application
    Filed: March 22, 2019
    Publication date: March 4, 2021
    Inventors: YUSUKE NAKAMURA, MOTOHIRO SAKATA, HIDEO SAKATA, MASATOSHI TAKESHITA
  • Publication number: 20210057754
    Abstract: An electrochemical device of the present invention includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The positive electrode includes a positive current collector containing aluminum, a positive electrode material layer containing a conductive polymer, and an aluminum oxide layer disposed on a surface of the positive current collector. The aluminum oxide layer contains fluorine.
    Type: Application
    Filed: April 24, 2019
    Publication date: February 25, 2021
    Inventors: HIROKI HAYASHI, TAKUMI YAMAGUCHI, NAO MATSUMURA, YASUYUKI ITO, MOTOHIRO SAKATA, HIDEO SAKATA
  • Patent number: 10756384
    Abstract: The present invention provides an electrolytic solution capable of providing an electrochemical device (e.g., a lithium ion secondary battery) or a module that is less likely to generate gas even in high-temperature storage and has high capacity retention even after high-temperature storage. The present invention relates to an electrolytic solution which may contain a compound represented by Y21R21C—CY22R22 wherein R21 and R22 may be the same as or different from each other, and are each H, an alkyl group, or a halogenated alkyl group; Y21 and Y22 may be the same as or different from each other, and are each —OR23 or a halogen atom; and R23 is H, an alkyl group, or a halogenated alkyl group.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: August 25, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoya Hidaka, Hideo Sakata, Kenzou Takahashi, Hiroyuki Arima, Shigeaki Yamazaki, Yoshiko Kuwajima, Shinichi Kinoshita
  • Patent number: 10720664
    Abstract: The present invention provides a lithium ion secondary cell excellent in high-temperature storage characteristics and high voltage cycle characteristics; and a nonaqueous electrolyte for the cell.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: July 21, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hideo Sakata, Meiten Koh, Akiyoshi Yamauchi, Hitomi Nakazawa, Tomoyo Sanagi, Aoi Nakazono, Yuki Adachi, Kyouhei Sawaki, Akinori Tani, Masahiro Tomita, Michiru Kagawa
  • Patent number: 10686222
    Abstract: A method for manufacturing a phosphate, which includes reacting, in a solvent, an organophosphate represented by the following formula (2) and an alkali metal hydroxide in an amount of 1.01 mole equivalents or more relative to the organophosphate to provide a composition containing a phosphate represented by the following formula (1), the alkali metal hydroxide, and the solvent; and adding hydrogen fluoride to the composition to neutralize the composition and to precipitate an alkali metal fluoride, thereby providing a composition containing the precipitated alkali metal fluoride, the phosphate represented by the formula (1), and the solvent. The formula (1) is (R11O)(R12O)PO2M, where R11, R12 and M are as defined herein. The formula (2) is (R21O)(R22O)(R23O)PO, where R21, R22, and R23 are as defined herein.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: June 16, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi Maruo, Shigeaki Yamazaki, Hideo Sakata, Shinichi Kinoshita
  • Publication number: 20200020982
    Abstract: An electrolyte solution whose residual capacity is less likely to decrease and whose percentage increase in resistance is less likely to change even after stored at high temperature. The electrolyte solution contains a compound (1) represented by the following formula (1): R11CFX11(CH2)n11COOR12 wherein R11 is H, F, a C1-C3 non-fluorinated alkyl group, or a C1-C3 fluorinated alkyl group; X11 is H or F; R12 is a C1-C3 non-fluorinated alkyl group or a C1-C3 fluorinated alkyl group; and n11 is an integer of 0 to 3; a fluorinated carbonate; and a specific additive.
    Type: Application
    Filed: November 1, 2017
    Publication date: January 16, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shigeaki YAMAZAKI, Kenzou TAKAHASHI, Hiroyuki ARIMA, Hideo SAKATA, Masakazu KINOSHITA, Shinichi KINOSHITA
  • Patent number: 10464916
    Abstract: An electrolyte solution containing a compound represented by the following formula (1): wherein Rf is a C1-C8 fluorinated alkyl group, and vinylene carbonate. Also disclosed is an electrochemical device including the electrolyte solution, a lithium ion secondary battery including the electrolyte solution and a module including the lithium ion secondary battery.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 5, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Shinya Takano, Mayuko Takano, Akinori Tani, Michiaki Okada, Hideo Sakata, Tomo Shimada, Shinichi Kinoshita
  • Publication number: 20190326644
    Abstract: An electrolyte solution applicable to high-voltage electrochemical devices and capable of improving the cycle characteristics of electrochemical devices even at high voltage. The electrolyte solution contains a fluorinated acyclic carbonate and a metal salt having a specific structure. The fluorinated acyclic carbonate is represented by CF3—OCOO—R11 (wherein R11 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group) or CFH2—OCOO—R12 (wherein R12 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group).
    Type: Application
    Filed: November 21, 2017
    Publication date: October 24, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu KINOSHITA, Kenzou TAKAHASHI, Hideo SAKATA, Shigeaki YAMAZAKI, Hiroyuki ARIMA, Shinichi KINOSHITA
  • Publication number: 20190326638
    Abstract: The present invention provides a novel electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution of the present invention contains a solvent, an electrolyte salt, and at least one selected from the group consisting of compounds represented by R11X11—SO3M11 and compounds represented by R21R22N—SO3M21 in an amount of 0.001 to 10 mass % relative to the solvent.
    Type: Application
    Filed: June 25, 2019
    Publication date: October 24, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi MARUO, Hideo SAKATA, Shinichi KINOSHITA
  • Publication number: 20190326639
    Abstract: An electrolyte solution applicable to high-voltage electrochemical devices and capable of improving the cycle characteristics of electrochemical devices even at high voltage, and an electrochemical device. The electrolyte solution contains a fluorinated diether and a metal salt having a specific structure. The fluorinated diether is represented by CFR11R12—O—CH2CH2—O—R13, wherein R11 and R12 are each individually H, CH3, F, CH2F, CHF2, or CF3; and R13 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group.
    Type: Application
    Filed: November 21, 2017
    Publication date: October 24, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu KINOSHITA, Kenzou TAKAHASHI, Hideo SAKATA, Shigeaki YAMAZAKI, Hiroyuki ARIMA, Shinichi KINOSHITA
  • Publication number: 20190288339
    Abstract: An electrolyte solution for an electrochemical device, such as a lithium secondary battery, or module. The electrolyte solution contains: a solvent that contains a fluorinated acyclic carbonate having a fluorine content of 33 to 70 mass %; at least one organosilicon compound selected from a compound represented by the formula (1): (R11)n11—M11—O—SiR12R13R14 and a compound represented by the formula (2): R21R22R23—Si—F; a lithium salt (3) that contains an oxalato-complex as an anion; and a lithium salt (4) represented by the formula (4): LizM31FxOy, where R11, M11, R12, R13, R14, R21, R22, R23 and M31 are as defined herein.
    Type: Application
    Filed: June 16, 2017
    Publication date: September 19, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hideo SAKATA, Kenzou TAKAHASHI, Hiroyuki ARIMA, Shigeaki YAMAZAKI, Shinichi KINOSHITA
  • Patent number: 10396399
    Abstract: An electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution contains a solvent, an electrolyte salt, and a phosphate in an amount of 0.001 to 15 mass % relative to the solvent and represented by the formula (1): (R11O)(R12O)PO2M, where R11, R12 and M are as defined herein.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: August 27, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi Maruo, Shigeaki Yamazaki, Hideo Sakata, Shinichi Kinoshita
  • Patent number: 10374257
    Abstract: An electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution contains a solvent, an electrolyte salt, and at least one selected from the group consisting of compounds represented by R11X11—SO3M11 and compounds represented by R21R22N—SO3M21 in an amount of 0.001 to 10 mass % relative to the solvent.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: August 6, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi Maruo, Hideo Sakata, Shinichi Kinoshita
  • Patent number: 10355312
    Abstract: The present invention provides an electrolyte solution that is capable of dealing with an increased voltage of an electrochemical device, as well as capable of improving the high-temperature storage characteristics and cycle characteristics of the electrochemical device, and an electrochemical device. The electrolyte solution includes a solvent containing a fluorinated saturated cyclic carbonate and a fluorinated acyclic carbonate; at least one sulfur-containing compound selected from the group consisting of compounds having a —SO2— bond, compounds having a —SO3— bond, and compounds having a —SO4— bond, and an electrolyte salt. The fluorinated acyclic carbonate has a fluorine content of 31.0 to 70.0 mass %.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 16, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hiroyuki Arima, Hideo Sakata, Shigeaki Yamazaki, Shinichi Kinoshita