Patents by Inventor Kei Shimamoto
Kei Shimamoto 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: 20170271091Abstract: A nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a lithium salt having a specific ?,?-dihydroxy carboxylic acid ester structure, phosphono hydroxy carboxylic acid structure, alkoxycarbonyl hydroxy carboxylic acid structure, or formyloxy structure; an energy storage device using the nonaqueous electrolytic solution; and a lithium salt used for the nonaqueous electrolytic solution. This nonaqueous electrolytic solution makes it possible not only to improve the electrochemical characteristics when the energy storage device is used at a high temperature and a high voltage and to improve the capacity retention rate after high-voltage and high-temperature storage, but also to suppress gas generation.Type: ApplicationFiled: May 13, 2015Publication date: September 21, 2017Applicant: UBE INDUSTRIES, LTD.Inventors: Koji ABE, Shoji SHIKITA, Junichi CHIKA, Kei SHIMAMOTO, Yosuke SATO
-
Publication number: 20170222268Abstract: Provided are a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the electrolyte salt including at least one first lithium salt selected from LiPF6, LiBF4, LiN(SO2F)2, LiN(SO2CF3)2, and LiN(SO2C2F5)2, and at least one second lithium salt selected from a lithium salt having an oxalate structure, a lithium salt having a phosphate structure, and a lithium salt having an S?O group, with a sum total of the first lithium salt and the second lithium salt being four or more, and an energy storage device using the same. This nonaqueous electrolytic solution is not only able to improve electrochemical characteristics at a high temperature and much more improve a discharge capacity retention rate and low-temperature output characteristics after a high-temperature storage test but also able to improve low-temperature input characteristics even for high-density electrodes.Type: ApplicationFiled: July 13, 2015Publication date: August 3, 2017Applicant: UBE INDUSTRIES, LTD.Inventors: Koji ABE, Kei SHIMAMOTO
-
Publication number: 20170194664Abstract: Disclosed are a non-aqueous electrolytic solution, which can improve cycle characteristics when a power storage device is used at high temperature and high voltage, and a power device using the same. The non-aqueous electrolytic solution according to the present invention comprises, in addition to a non-aqueous solvent and an electrolyte salt dissolved therein, a compound represented by the following formula (I): wherein n is an integer of 1 or 2; and when n is 1, L represents a straight or branched unsaturated hydrocarbon group of which at least one hydrogen atom is optionally substituted by a halogen atom, a cycloalkyl group of which at least one hydrogen atom is optionally substituted by a halogen atom, or an aryl group of which at least one hydrogen atom is optionally substituted by a halogen atom; and when n is 2, L represents a saturated or unsaturated divalent hydrocarbon group which optionally contains ether bond(s), or an arylene group.Type: ApplicationFiled: May 28, 2015Publication date: July 6, 2017Inventors: Koji ABE, Kei SHIMAMOTO, Shoji SHIKITA
-
Patent number: 9595737Abstract: The present invention includes [1] a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution and being capable of improving electrochemical characteristics in a broad temperature range; and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution.Type: GrantFiled: May 13, 2013Date of Patent: March 14, 2017Assignee: UBE INDUSTRIES, LTD.Inventors: Kei Shimamoto, Yuichi Kotou, Shoji Shikita
-
Patent number: 9570777Abstract: A lithium secondary battery of the present invention includes: a positive electrode; a negative electrode; a nonaqueous electrolytic solution; and a separator. The positive active material contains a lithium-containing composite oxide containing nickel. A molar ratio of a total nickel amount with respect to a total lithium amount contained in the entire positive active material is 0.05 to 1.0. The nonaqueous electrolytic solution contains 0.5 to 5.0 mass % of a phosphonoacetate-based compound represented by the following General Formula (1). In the Formula, R1, R2, and R3 independently represent an alkyl group, an alkenyl group, or an alkynyl group having 1 to 12 carbon atoms, which may be substituted by a halogen atom, and ānā represents an integer of 0 to 6.Type: GrantFiled: September 28, 2012Date of Patent: February 14, 2017Assignees: HITACHI MAXELL, LTD., UBE INDUSTRIES, LTD.Inventors: Haruki Kamizori, Yusuke Nakamura, Itaru Gosho, Masayuki Yamada, Koji Abe, Kei Shimamoto
-
Patent number: 9384906Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics at high temperatures, which comprises at least one organic phosphorus compound represented by the following general formula (I), an energy storage device using the nonaqueous electrolytic solution, and a specific organic phosphorus compound. (In the formula, R1 and R2 each independently represent an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an alkoxy group, a cycloalkoxy group, an alkenyloxy group, an alkynyloxy group, a halogenoalkyl group, a halogenoalkoxy group, an aryl group, or an aryloxy group; R3 and R4 each independently represent a hydrogen atom, a halogen atom, or an alkyl group; m is an integer of from 1 to 4, n is 0 or 1, q is 1 or 2. When q is 1 and n is 0, X represents an alkoxy group, an alkynyloxy group, an alkyloxyalkoxy group, an aryloxy group, etc.Type: GrantFiled: April 12, 2012Date of Patent: July 5, 2016Assignee: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kei Shimamoto
-
Publication number: 20160027592Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in a broad temperature range and an energy storage device using the same. [1] A nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing, as an additive, an SO4 group-containing compound having a specified structure and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous electrolytic solution contains, as an additive, 0.001% by mass or more and less than 5% by mass of an SO4 group-containing compound having a specified structure in the nonaqueous electrolytic solution, are disclosed.Type: ApplicationFiled: March 31, 2014Publication date: January 28, 2016Applicant: UBE INDUSTRIES, LTD.Inventors: Kei SHIMAMOTO, Koji ABE, Yuichi KOTOU, Shoji SHIKITA
-
Patent number: 9240614Abstract: The present invention provides a nonaqueous electrolytic solution which can improve the electrochemical characteristics in a broad temperature range, an electrochemical element produced by using the same and a sulfonic ester compound having a branched structure which is used for the same. The present invention relates to a nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent, which comprises a sulfonic ester compound represented by the following Formula (I) in an amount of 0.Type: GrantFiled: June 3, 2011Date of Patent: January 19, 2016Assignee: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kazuhiro Miyoshi, Shoji Shikita, Kei Shimamoto
-
Patent number: 9236635Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in a broad temperature range, such as low-temperature cycle properties and low-temperature discharge properties after high-temperature storage, and provides an energy storage device using the nonaqueous electrolytic solution. The invention includes (1) a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, which comprises from 0.001 to 10% by mass of a compound represented by the following general formula (I), and (2) an energy storage device comprising a positive electrode, a negative electrode, and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous electrolytic solution is the nonaqueous electrolytic solution of (1).Type: GrantFiled: August 7, 2012Date of Patent: January 12, 2016Assignee: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kei Shimamoto
-
Publication number: 20150125761Abstract: The present invention includes [1] a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution and being capable of improving electrochemical characteristics in a broad temperature range; and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution.Type: ApplicationFiled: May 13, 2013Publication date: May 7, 2015Applicant: UBE INDUSTRIES, LTD.Inventors: Kei Shimamoto, Yuichi Kotou, Shoji Shikita
-
Publication number: 20140377668Abstract: A nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent and an energy storage device are provided, wherein the nonaqueous electrolytic solution contains at least one kind of a compound represented by the following general formula (I): (wherein each of R1 to R10 independently represents hydrogen atom, halogen atom, or a C1 to C4 alkyl group in which at least one hydrogen atom may be substituted with halogen atom.Type: ApplicationFiled: December 17, 2012Publication date: December 25, 2014Applicant: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kei Shimamoto
-
Publication number: 20140234704Abstract: A lithium secondary battery of the present invention includes: a positive electrode; a negative electrode; a nonaqueous electrolytic solution; and a separator. The positive active material contains a lithium-containing composite oxide containing nickel. A molar ratio of a total nickel amount with respect to a total lithium amount contained in the entire positive active material is 0.05 to 1.0. The nonaqueous electrolytic solution contains 0.5 to 5.0 mass % of a phosphonoacetate-based compound represented by the following General Formula (1). In the Formula, R1, R2, and R3 independently represent an alkyl group, an alkenyl group, or an alkynyl group having 1 to 12 carbon atoms, which may be substituted by a halogen atom, and ānā represents an integer of 0 to 6.Type: ApplicationFiled: September 28, 2012Publication date: August 21, 2014Applicants: UBE INDUSTRIES, LTD., HITACHI MAXELL, LTD.Inventors: Haruki Kamizori, Yusuke Nakamura, Itaru Gosho, Masayuki Yamada, Koji Abe, Kei Shimamoto
-
Publication number: 20140212770Abstract: Disclosed are a non-aqueous electrolytic solution that exhibits excellent electrochemical characteristics over a wide temperature range, and an electrochemical device using the non-aqueous electrolytic solution. The non-aqueous electrolytic solution includes a non-aqueous solvent and an electrolyte salt dissolved in the non-aqueous solvent, wherein the non-aqueous electrolytic solution further comprises one compound represented by general formula (I): wherein R1 represents alkyl having 1 to 6 carbon atoms, cycloalkyl having 3 to 6 carbon atoms, alkenyl having 2 to 6 carbon atoms, alkynyl having 3 to 6 carbon atoms, or aryl having 6 to 12 carbon atoms; X represents a divalent linking group that has 1 to 6 carbon atoms and is optionally substituted by a halogen atom; and Y1 represents a specific substituent, for example, alkylcarbonyl.Type: ApplicationFiled: August 3, 2012Publication date: July 31, 2014Applicant: Ulbe industries, Ltd.Inventors: Koji Abe, Kei Shimamoto
-
Publication number: 20140154587Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in a broad temperature range, such as low-temperature cycle properties and low-temperature discharge properties after high-temperature storage, and provides an energy storage device using the nonaqueous electrolytic solution. The invention includes (1) a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, which comprises from 0.001 to 10% by mass of a compound represented by the following general formula (I), and (2) an energy storage device comprising a positive electrode, a negative electrode, and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous electrolytic solution is the nonaqueous electrolytic solution of (1).Type: ApplicationFiled: August 7, 2012Publication date: June 5, 2014Applicant: UBE INDUSTRIES, LTDInventors: Koji Abe, Kei Shimamoto
-
Publication number: 20140030610Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics at high temperatures, which comprises at least one organic phosphorus compound represented by the following general formula (I), an energy storage device using the nonaqueous electrolytic solution, and a specific organic phosphorus compound. (In the formula, R1 and R2 each independently represent an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an alkoxy group, a cycloalkoxy group, an alkenyloxy group, an alkynyloxy group, a halogenoalkyl group, a halogenoalkoxy group, an aryl group, or an aryloxy group; R3 and R4 each independently represent a hydrogen atom, a halogen atom, or an alkyl group; m is an integer of from 1 to 4, n is 0 or 1, q is 1 or 2. When q is 1 and n is 0, X represents an alkoxy group, an alkynyloxy group, an alkyloxyalkoxy group, an aryloxy group, etc.Type: ApplicationFiled: April 12, 2012Publication date: January 30, 2014Applicant: UBE Industries, LtdInventors: Koji Abe, Kei Shimamoto
-
Publication number: 20130115520Abstract: The present invention relates to a nonaqueous electrolytic solution which can improve the electrochemical characteristics in a broad temperature range and an electrochemical element produced by using the same. Provided are (1) a nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent, which comprises an organic tin compound represented by the specific formula in an amount of 0.001 to 5% by mass of the nonaqueous electrolytic solution and (2) an electrochemical element comprising a positive electrode, a negative electrode and a nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent, wherein the above nonaqueous electrolytic solution is the nonaqueous electrolytic solution of (1) described above.Type: ApplicationFiled: July 22, 2011Publication date: May 9, 2013Applicant: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kei Shimamoto
-
Publication number: 20130071733Abstract: The present invention provides a nonaqueous electrolytic solution which can improve the electrochemical characteristics in a broad temperature range, an electrochemical element produced by using the same and a sulfonic ester compound having a branched structure which is used for the same. The present invention relates to a nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent, which comprises a sulfonic ester compound represented by the following Formula (I) in an amount of 0.Type: ApplicationFiled: June 3, 2011Publication date: March 21, 2013Applicant: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kazuhiro Miyoshi, Shoji Shikita, Kei Shimamoto