Patents by Inventor Aoi Nakazono
Aoi Nakazono 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).
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Patent number: 10720664Abstract: 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: GrantFiled: March 29, 2012Date of Patent: July 21, 2020Assignee: 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
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Patent number: 9806378Abstract: The present invention aims to provide an electrolyte solution for forming, for example, a secondary battery having excellent oxidation resistance and high voltage cycle characteristics; an electrochemical device such as a lithium-ion secondary battery that contains the electrolyte solution; and a module that contains the electrochemical device. The present invention provides an electrolyte solution containing a solvent and an electrolyte salt, wherein the solvent contains a fluorine-containing compound (A) represented by formula (1) shown below, and a fluorine-containing compound (B) represented by formula (2) shown below: Rf1OCOOR??(1) wherein Rf1 is a C1-C4 fluorine-containing alkyl group, and R is a C1-C4 non-fluorinated alkyl group, and Rf2OCOORf3??(2) wherein Rf2 and Rf3 are the same or different, and each is a C1-C4 fluorine-containing alkyl group.Type: GrantFiled: April 12, 2013Date of Patent: October 31, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Mayuko Taeda, Meiten Koh, Aoi Nakazono, Michiru Kagawa, Akiyoshi Yamauchi
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Patent number: 9666905Abstract: An electrolytic solution including a nonaqueous solvent (I), an electrolyte salt (II), and 0.001 to 20% by mass of a compound represented by the formula (1) or the formula (A) as defined herein.Type: GrantFiled: February 27, 2014Date of Patent: May 30, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Mayuko Taeda, Meiten Koh, Aoi Nakazono, Michiru Kagawa, Yoshiko Kuwajima, Michiaki Okada, Tomoo Shimada, Shinichi Kinoshita
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Patent number: 9627714Abstract: A non-aqueous electrolyte including (i) a compound represented by the general formula (1): X—R—SO2F??(1) where R is a C1-12 linear or branched alkylene group optionally containing an ether bond and optionally hydrogen atoms of the alkylene group are partly substituted by a fluorine atom(s); and X is a carboxylic acid derivative group), (ii) a non-aqueous solvent and (iii) an electrolyte salt.Type: GrantFiled: October 3, 2012Date of Patent: April 18, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Aoi Nakazono, Mayuko Taeda, Akiyoshi Yamauchi
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Patent number: 9570778Abstract: The present invention aims to provide an electrolyte solution for forming, for example, a secondary battery having excellent oxidation resistance and high-temperature storage characteristics; an electrochemical device such as a lithium-ion secondary battery that contains the electrolyte solution; and a module that contains the electrochemical device. The present invention provides an electrolyte solution containing a solvent and an electrolyte salt, wherein the solvent contains a fluorine-containing compound (A) represented by formula (1) shown below in an amount of 0.01 to 20% by mass, and a fluorine-containing compound (B) represented by formula (2) shown below in an amount of 10 to 80% by mass: Rf1OCOOR??(1) wherein Rf1 is a C1-C4 fluorine-containing alkyl group, and R is a C1-C4 non-fluorinated alkyl group, and Rf2OCOORf3??(2) wherein Rf2 and Rf3 are the same or different, and each is a C1-C4 fluorine-containing alkyl group.Type: GrantFiled: April 12, 2013Date of Patent: February 14, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Shigeaki Yamazaki, Hideo Sakata, Mayuko Taeda, Meiten Koh, Aoi Nakazono, Michiru Kagawa, Akiyoshi Yamauchi
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Patent number: 9509016Abstract: An object of the present invention is to provide a battery having excellent durability at high temperature and high voltage. The present invention is a battery including a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the non-aqueous electrolyte contains (i) a compound represented by the general formula (1): Rf—SO2F??(1) (where Rf is a C1-13 linear or branched fluorine-containing alkyl group optionally containing an ether bond and optionally containing a double bond).Type: GrantFiled: October 3, 2012Date of Patent: November 29, 2016Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Aoi Nakazono, Hitomi Miyawaki, Hideo Sakata
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Patent number: 9455468Abstract: The present invention aims to provide an electrochemical device excellent in high temperature storage characteristics and cycling characteristics at high voltages, and a nonaqueous electrolyte for the electrochemical device.Type: GrantFiled: March 30, 2012Date of Patent: September 27, 2016Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Hideo Sakata, Meiten Koh, Akiyoshi Yamauchi, Hitomi Nakazawa, Tomoyo Sanagi, Aoi Nakazono, Yuki Adachi, Kyouhei Sawaki, Akinori Tani, Masahiro Tomita, Mayuko Taeda
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Patent number: 9455474Abstract: Provided is an electrolytic solution exhibiting excellent withstand voltage and satisfactory characteristics even at low and high temperatures. The invention is an electrolytic solution that includes a cyclic carbonate (I-1) represented by formula (I-1): (in the formula, R is an alkyl group having two or more carbon atoms, a fluorine-containing alkyl group having two or more carbon atoms, an alkoxy group or a fluorine-containing alkoxy group, in which an oxygen atom may be inserted between carbon atoms); a cyclic carbonate (I-2) different from the cyclic carbonate (I-1); and an electrolyte salt (II)).Type: GrantFiled: April 2, 2012Date of Patent: September 27, 2016Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Hideo Sakata, Hitomi Nakazawa, Tomoyo Sanagi, Kyouhei Sawaki, Akiyoshi Yamauchi, Aoi Nakazono, Yuki Adachi
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Patent number: 9397368Abstract: The present invention directs to a non-aqueous electrolyte solution, including (I) at least one compound selected from the group consisting of fluorinated linear sulfones and fluorinated linear sulfonic acid esters, and (II) an electrolyte salt. Such a non-aqueous electrolyte solution has high oxidation resistance, minimizes its decomposition even when hydrofluoric acid is produced. Also, the solution is less likely to cause, in the case of being used for a secondary cell, swelling of the cell and lowering of the battery performance.Type: GrantFiled: October 11, 2011Date of Patent: July 19, 2016Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Hideo Sakata, Hitomi Nakazawa, Kyouhei Sawaki, Tomoyo Sanagi, Akiyoshi Yamauchi, Aoi Nakazono, Akinori Tani, Masahiro Tomita, Yuki Adachi
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Publication number: 20160006078Abstract: The present invention aims to provide an electrolytic solution which restrains gas generation and has excellent battery characteristics. The electrolytic solution includes a nonaqueous solvent (I), an electrolyte salt (II), and 0.Type: ApplicationFiled: February 27, 2014Publication date: January 7, 2016Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mayuko TAEDA, Meiten KOH, Aoi NAKAZONO, Michiru KAGAWA, Yoshiko KUWAJIMA, Michiaki OKADA, Tomoo SHIMADA, Shinichi KINOSHITA
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Publication number: 20150235772Abstract: A nonaqueous electrolyte solution including: a nonaqueous solvent; and an electrolyte salt. The nonaqueous solvent contains a fluorinated linear carbonate (A) represented by Formula (1): RfOCOOR where Rf represents a C1-4 fluorinated alkyl group and R represents a C1-4 alkyl group, and at least one cyclic carbonate (B) selected from ethylene carbonate, propylene carbonate, and fluoroethylene carbonate. The nonaqueous solvent also contains at least one compound (?) and at least one compound (?) as defined herein. The compound (?) is contained in an amount of 5000 ppm or less based on the amount of the fluorinated linear carbonate (A), and the compound (?) is contained in an amount of 50 ppm or less based on the amount of the cyclic carbonate (B). Also disclosed is an electrochemical device and a lithium ion secondary cell containing the nonaqueous electrolyte solution and a module including the lithium ion secondary cell.Type: ApplicationFiled: September 25, 2013Publication date: August 20, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hideo Sakata, Meiten Koh, Shigeaki Yamazaki, Akiyoshi Yamauchi, Michiru Kagawa, Aoi Nakazono
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Publication number: 20150086876Abstract: The present invention aims to provide an electrolyte solution for forming, for example, a secondary battery having excellent oxidation resistance and high voltage cycle characteristics; an electrochemical device such as a lithium-ion secondary battery that contains the electrolyte solution; and a module that contains the electrochemical device. The present invention provides an electrolyte solution containing a solvent and an electrolyte salt, wherein the solvent contains a fluorine-containing compound (A) represented by formula (1) shown below, and a fluorine-containing compound (B) represented by formula (2) shown below: Rf1OCOOR??(1) wherein Rf1 is a C1-C4 fluorine-containing alkyl group, and R is a C1-C4 non-fluorinated alkyl group, and Rf2OCOORf3??(2) wherein Rf2 and Rf3 are the same or different, and each is a C1-C4 fluorine-containing alkyl group.Type: ApplicationFiled: April 12, 2013Publication date: March 26, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mayuko Taeda, Meiten Koh, Aoi Nakazono, Michiru Kagawa, Akiyoshi Yamauchi
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Publication number: 20150086877Abstract: The present invention aims to provide an electrolyte solution for forming, for example, a secondary battery having excellent oxidation resistance and high-temperature storage characteristics; an electrochemical device such as a lithium-ion secondary battery that contains the electrolyte solution; and a module that contains the electrochemical device. The present invention provides an electrolyte solution containing a solvent and an electrolyte salt, wherein the solvent contains a fluorine-containing compound (A) represented by formula (1) shown below in an amount of 0.01 to 20% by mass, and a fluorine-containing compound (B) represented by formula (2) shown below in an amount of 10 to 80% by mass: Rf1OCOOR??(1) wherein Rf1 is a C1-C4 fluorine-containing alkyl group, and R is a C1-C4 non-fluorinated alkyl group, and Rf2OCOORf3??(2) wherein Rf2 and Rf3 are the same or different, and each is a C1-C4 fluorine-containing alkyl group.Type: ApplicationFiled: April 12, 2013Publication date: March 26, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shigeaki Yamazaki, Hideo Sakata, Mayuko Taeda, Meiten Koh, Aoi Nakazono, Michiru Kagawa, Akiyoshi Yamauchi
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Publication number: 20150004501Abstract: A non-aqueous electrolyte including (i) a compound represented by the general formula X—R—SO2F??(1) where R is a C1-12 linear or branched alkylene group optionally containing an ether bond and optionally hydrogen atoms of the alkylene group are partly substituted by a fluorine atom(s); and X is a carboxylic acid derivative group), (ii) a non-aqueous solvent and (iii) an electrolyte salt.Type: ApplicationFiled: October 3, 2012Publication date: January 1, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Aoi Nakazono, Mayuko Taeda, Akiyoshi Yamauchi
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Patent number: 8835696Abstract: There is provided a method of preparing a high purity fluorine-containing ether which inhibits a side reaction generating an unsaturated bond and assures low cost and simple steps. When preparing the fluorine-containing ether by allowing a fluorine-containing alkyl alcohol to react with a fluorinated olefin in the presence of a basic compound, a reaction is terminated at a stage before a conversion ratio of the fluorine-containing alkyl alcohol reaches 75%.Type: GrantFiled: June 11, 2009Date of Patent: September 16, 2014Assignee: Daikin Industries, Ltd.Inventors: Michiru Kagawa, Aoi Nakazono, Akiyoshi Yamauchi, Meiten Koh
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Publication number: 20140242475Abstract: An object of the present invention is to provide a battery having excellent durability at high temperature and high voltage. The present invention is a battery including a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the non-aqueous electrolyte contains (i) a compound represented by the general formula (1): Rf—SO2F??(1) (where Rf is a C1-13 linear or branched fluorine-containing alkyl group optionally containing an ether bond and optionally containing a double bond).Type: ApplicationFiled: October 3, 2012Publication date: August 28, 2014Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Aoi Nakazono, Hitomi Miyawaki, Hideo Sakata
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Publication number: 20140023916Abstract: Provided is an electrolytic solution exhibiting excellent withstand voltage and satisfactory characteristics even at low and high temperatures. The invention is an electrolytic solution that includes a cyclic carbonate (I-1) represented by formula (I-1): (in the formula, R is an alkyl group having two or more carbon atoms, a fluorine-containing alkyl group having two or more carbon atoms, an alkoxy group or a fluorine-containing alkoxy group, in which an oxygen atom may be inserted between carbon atoms); a cyclic carbonate (I-2) different from the cyclic carbonate (I-1); and an electrolyte salt (II)).Type: ApplicationFiled: April 2, 2012Publication date: January 23, 2014Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Hideo Sakata, Hitomi Nakazawa, Tomoyo Sanagi, Kyouhei Sawaki, Akiyoshi Yamauchi, Aoi Nakazono, Yuki Adachi
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Publication number: 20140023938Abstract: The present invention aims to provide an electrochemical device excellent in high temperature storage characteristics and cycling characteristics at high voltages, and a nonaqueous electrolyte for the electrochemical device.Type: ApplicationFiled: March 30, 2012Publication date: January 23, 2014Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hideo Sakata, Meiten Koh, Akiyoshi Yamauchi, Hitomi Nakazawa, Tomoyo Sanagi, Aoi Nakazono, Yuki Adachi, Kyouhei Sawaki, Akinori Tani, Masahiro Tomita, Mayuko Taeda
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Publication number: 20140017560Abstract: 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: ApplicationFiled: March 29, 2012Publication date: January 16, 2014Applicant: 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
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Publication number: 20130224606Abstract: The present invention directs to a non-aqueous electrolyte solution, including (I) at least one compound selected from the group consisting of fluorinated linear sulfones and fluorinated linear sulfonic acid esters, and (II) an electrolyte salt. Such a non-aqueous electrolyte solution has high oxidation resistance, minimizes its decomposition even when hydrofluoric acid is produced. Also, the solution is less likely to cause, in the case of being used for a secondary cell, swelling of the cell and lowering of the battery performance.Type: ApplicationFiled: October 11, 2011Publication date: August 29, 2013Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Meiten Koh, Hideo Sakata, Hitomi Nakazawa, Kyouhei Sawaki, Tomoyo Sanagi, Akiyoshi Yamauchi, Aoi Nakazono, Akinori Tani, Masahiro Tomita, Yuki Adachi