Patents by Inventor Takayuki Taki
Takayuki Taki 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: 10186732Abstract: A nonaqueous electrolyte solution for secondary batteries, which maintains small internal resistance and high electrical capacitance in long-term use in a nonaqueous electrolyte secondary battery uses, as an active material, a crystalline carbon material having a high crystallinity, and a negative electrode produced using a polymeric carboxylic compound as a binding agent. The nonaqueous electrolyte solution contains: (A) at least one compound selected from a group consisting of an unsaturated phosphate ester compound represented by a general formula (1) and an unsaturated phosphate ester compound represented by a general formula (2); (B) at least one compound selected from a group consisting of a sulfite ester compound, a sulfonate ester compound, an alkali metal imide salt compound, a fluorosilane compound, an organic disilane compound or an organic disiloxane compound; (C) an organic solvent, and (D) an electrolyte salt. A secondary battery using such nonaqueous electrolyte solution is also described.Type: GrantFiled: March 4, 2011Date of Patent: January 22, 2019Assignees: DENSO CORPORATION, ADEKA CORPORATIONInventors: Kouhei Yamamoto, Hisashi Umemoto, Kyohei Usami, Manabu Yamada, Takayuki Taki, Yuyu Ohnuma, Hiroaki Watanabe, Atsuski Shibuya
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Patent number: 9583280Abstract: An electricity storage device maintains low internal resistance and high electric capacity. The nonaqueous-electrolytic-solution hybrid electricity storage device employs an anode into/from which lithium can be intercalated and deintercalated and a cathode including activated carbon, even after high-temperature storage and/or high-temperature charging/discharging. Specifically, this electricity storage device includes an anode into/from which lithium can be intercalated and deintercalated, a cathode that includes activated carbon, and a nonaqueous electrolytic solution, wherein the electricity storage device employs a nonaqueous electrolytic solution that includes at least one type of compound represented by one of general formulas (1) to (5). Details on the general formulas (1) to (5) are as described in the Description.Type: GrantFiled: July 12, 2013Date of Patent: February 28, 2017Assignee: ADEKA CORPORATIONInventors: Takayuki Taki, Hiroaki Watanabe, Atsuki Shibuya, Akiko Tasaki, Eiji Katsuno
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Patent number: 9419306Abstract: The invention provides a nonaqueous electrolyte for batteries and a nonaqueous secondary battery using the same which maintains small internal resistance and high electric capacity in high temperature storage. The nonaqueous electrolyte has an electrolyte salt, a compound of general formula (1), and a compound of general formula (2) dissolved in an organic solvent. The ratio of the compound of formula (2) to the sum of the compound of formula (1) and the compound of formula (2) is 0.1 to 8 mass %. In the formulae, R1, R2, R3, and R4 each independently represent C1-C8 alkyl.Type: GrantFiled: November 1, 2012Date of Patent: August 16, 2016Assignee: ADEKA CORPORATIONInventors: Takayuki Taki, Hiroaki Watanabe, Atsuki Shibuya, Akiko Tasaki
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Patent number: 9379411Abstract: A non-aqueous electrolyte secondary battery has a negative electrode containing graphite particles as a negative electrode active material, a positive electrode containing a lithium-containing oxide of a transition metal or a lithium-containing phosphate of a transition metal as a positive electrode active material, and a non-aqueous electrolyte in which a lithium salt is dissolved in an organic solvent.Type: GrantFiled: August 8, 2011Date of Patent: June 28, 2016Assignee: ADEKA CORPORATIONInventors: Takayuki Taki, Yuyu Ohnuma, Hiroaki Watanabe, Atsuki Shibuya
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Patent number: 9337511Abstract: Disclosed is a nonaqueous secondary battery using a positive electrode containing a transition metal and lithium. The battery is prevented from deterioration due to elution of the transition metal from the positive electrode and thereby capable of maintaining small internal resistance and high electrical capacity even after high temperature storage or high-temperature charge and discharge cycles. The battery includes a negative electrode capable of intercalating and deintercalating lithium, a positive electrode containing a transition metal and lithium, and a nonaqueous electrolyte having a lithium salt dissolved in an organic solvent, the nonaqueous electrolyte containing a polycarboxylic ester compound represented by general formula (1) or (2).Type: GrantFiled: October 31, 2012Date of Patent: May 10, 2016Assignee: ADEKA CORPORATIONInventors: Takayuki Taki, Hiroaki Watanabe, Atsuki Shibuya, Akiko Tasaki, Eiji Katsuno
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Publication number: 20150206664Abstract: An electricity storage device maintains low internal resistance and high electric capacity. The nonaqueous-electrolytic-solution hybrid electricity storage device employs an anode into/from which lithium can be intercalated and deintercalated and a cathode including activated carbon, even after high-temperature storage and/or high-temperature charging/discharging. Specifically, this electricity storage device includes an anode into/from which lithium can be intercalated and deintercalated, a cathode that includes activated carbon, and a nonaqueous electrolytic solution, wherein the electricity storage device employs a nonaqueous electrolytic solution that includes at least one type of compound represented by one of general formulas (1) to (5). Details on the general formulas (1) to (5) are as described in the Description.Type: ApplicationFiled: July 12, 2013Publication date: July 23, 2015Applicant: ADEKA CORPORATIONInventors: Takayuki Taki, Hiroaki Watanabe, Atsuki Shibuya, Akiko Tasaki, Eiji Katsuno
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Patent number: 9023536Abstract: Disclosed is a non-aqueous electrolyte secondary battery using a polyanion compound or a lithium nickelate as a positive electrode active material, suppressing the elution of a transition metal from the polyanion compound or ameliorating the deterioration of a binder by a residual alkali component, and provides a non-aqueous electrolyte secondary battery having a negative electrode intercalating and deintercalating lithium ions, a positive electrode containing a lithium-containing compound as a positive electrode active material, and a non-aqueous electrolyte with a lithium salt dissolved in organic solvent. The lithium-containing compound is a polyanion compound or a lithium nickelate. The non-aqueous electrolyte contains a fluorosilane compound: R1 to R3: alkyl group having 1-8 carbon(s), an alkenyl group having 2-8 carbons, a cycloalkyl group having 5-8 carbons, an aryl group having 6-8 carbons or a fluorine atom.Type: GrantFiled: October 13, 2011Date of Patent: May 5, 2015Assignee: Adeka CorporationInventors: Takayuki Taki, Yuyu Ohnuma, Atsuki Shibuya, Hiroaki Watanabe, Hisashi Umemoto, Kyohei Usami, Manabu Yamada
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Patent number: 9017866Abstract: A non-aqueous electrolyte battery using a lithium-containing metal oxide containing manganese as a positive electrode active material, which can suppress the elution of manganese from the positive electrode active material. The non-aqueous electrolyte secondary battery has a negative electrode capable of intercalating and deintercalating lithium ions, a positive electrode containing a lithium-containing compound as a positive electrode active material, and a non-aqueous electrolyte in which a lithium salt is dissolved in an organic solvent. The lithium-containing compound is a lithium-containing metal oxide containing manganese, and the non-aqueous electrolyte contains a fluorosilane compound: R1 to R3 each represents a 1-8 carbon alkyl group, a 2-8 carbon alkenyl group, a 5-8 carbon cycloalkyl group, a 6-8 carbon aryl group or a fluorine atom, and R4 represents a 1-8 carbon alkylene group or a 4-8 carbon alkylene group having an ether group.Type: GrantFiled: October 13, 2011Date of Patent: April 28, 2015Assignee: Adeka CorporationInventors: Takayuki Taki, Yuyu Ohnuma, Atsuki Shibuya, Hiroaki Watanabe
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Publication number: 20150044551Abstract: Disclosed is a nonaqueous secondary battery using a positive electrode containing a transition metal and lithium. The battery is prevented from deterioration due to elution of the transition metal from the positive electrode and thereby capable of maintaining small internal resistance and high electrical capacity even after high temperature storage or high-temperature charge and discharge cycles. The battery includes a negative electrode capable of intercalating and deintercalating lithium, a positive electrode containing a transition metal and lithium, and a nonaqueous electrolyte having a lithium salt dissolved in an organic solvent, the nonaqueous electrolyte containing a polycarboxylic ester compound represented by general formula (1) or (2).Type: ApplicationFiled: October 31, 2012Publication date: February 12, 2015Inventors: Takayuki Taki, Hiroaki Watanabe, Atsuki Shibuya, Akiko Tasaki, Eiji Katsuno
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Publication number: 20140242456Abstract: The invention provides a nonaqueous electrolyte for batteries and a nonaqueous secondary battery using the same which maintains small internal resistance and high electric capacity in high temperature storage. The nonaqueous electrolyte has an electrolyte salt, a compound of general formula (1), and a compound of general formula (2) dissolved in an organic solvent. The ratio of the compound of formula (2) to the sum of the compound of formula (1) and the compound of formula (2) is 0.1 to 8 mass %. In the formulae, R1, R2, R3, and R4 each independently represent C1-C8 alkyl.Type: ApplicationFiled: November 1, 2012Publication date: August 28, 2014Inventors: Takayuki Taki, Hiroaki Watanabe, Atsuki Shibuya, Akiko Tasaki
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Publication number: 20130323605Abstract: A nonaqueous electrolyte solution for secondary batteries, which maintains small internal resistance and high electrical capacitance in long-term use in a nonaqueous electrolyte secondary battery uses, as an active material, a crystalline carbon material having a high crystallinity, and a negative electrode produced using a polymeric carboxylic compound as a binding agent. The nonaqueous electrolyte solution contains: (A) at least one compound selected from a group consisting of an unsaturated phosphate ester compound represented by a general formula (1) and an unsaturated phosphate ester compound represented by a general formula (2); (B) at least one compound selected from a group consisting of a sulfite ester compound, a sulfonate ester compound, an alkali metal imide salt compound, a fluorosilane compound, an organic disilane compound or an organic disiloxane compound; (C) an organic solvent, and (D) an electrolyte salt. A secondary battery using such nonaqueous electrolyte solution is also described.Type: ApplicationFiled: March 4, 2011Publication date: December 5, 2013Applicants: ADEKA CORPORATION, DENSO CORPORATIONInventors: Kouhei YAMAMOTO, Hisashi UMEMOTO, Kyohei USAMI, Manabu YAMADA, Takayuki TAKI, Yuyu OHNUMA, Hiroaki WATANABE, Atsuski SHIBUYA
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Publication number: 20130236777Abstract: Provided is a non-aqueous secondary battery that uses a lithium-containing metal oxide that contains manganese as a positive electrode active material, and wherein a small internal resistance and a high electric capacity can be maintained even after high-temperature storage or charge and discharge at high temperatures, by suppressing elution of manganese from the positive electrode active material. Specifically provided is a non-aqueous electrolyte secondary battery with a negative electrode capable of intercalating and deintercalating lithium ions, a positive electrode with a lithium-containing compound as the positive electrode active material, and a non-aqueous electrolyte that has lithium salt dissolved in an organic solvent. Said non-aqueous electrolyte secondary battery is characterized by the lithium-containing compound being a lithium-containing metal oxide compound that contains manganese and by the non-aqueous electrolyte containing a fluorosilane compound indicated by general formula (1).Type: ApplicationFiled: October 13, 2011Publication date: September 12, 2013Applicant: ADEKA CORPORATIONInventors: Takayuki Taki, Yuyu Ohnuma, Atsuki Shibuya, Hiroaki Watanabe
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Publication number: 20130177822Abstract: Disclosed is a non-aqueous electrolyte secondary battery using a polyanion compound or a lithium nickelate as a positive electrode active material, suppressing the elution of a transition metal from the polyanion compound or ameliorating the deterioration of a binder by a residual alkali component, and provides a non-aqueous electrolyte secondary battery having a negative electrode intercalating and deintercalating lithium ions, a positive electrode containing a lithium-containing compound as a positive electrode active material, and a non-aqueous electrolyte with a lithium salt dissolved in organic solvent. The lithium-containing compound is a polyanion compound or a lithium nickelate. The non-aqueous electrolyte contains a fluorosilane compound: R1 to R3: alkyl group having 1-8 carbon(s), an alkenyl group having 2-8 carbons, a cycloalkyl group having 5-carbons, an aryl group having 6-8 carbons or a fluorine atom.Type: ApplicationFiled: October 13, 2011Publication date: July 11, 2013Applicant: ADEKA CORPORATIONInventors: Takayuki Taki, Yuyu Ohnuma, Atsuki Shibuya, Hiroaki Watanabe, Hisashi Umemoto, Kyohei Usami, Manabu Yamada
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Publication number: 20130149603Abstract: A non-aqueous electrolyte secondary battery has a negative electrode containing graphite particles as a negative electrode active material, a positive electrode containing a lithium-containing oxide of a transition metal or a lithium-containing phosphate of a transition metal as a positive electrode active material, and a non-aqueous electrolyte in which a lithium salt is dissolved in an organic solvent.Type: ApplicationFiled: August 8, 2011Publication date: June 13, 2013Applicant: ADEKA CORPORATIONInventors: Takayuki Taki, Yuyu Ohnuma, Hiroaki Watanabe, Atsuki Shibuya
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Patent number: 7799469Abstract: A nonaqueous electrolyte solution in which an electrolyte salt is dissolved in an organic solvent includes, includes at least one or more compounds selected from the silicon compounds represented by general formula (1), (2), or (3) below: (In the formulae, each of R1, R2, and R3 independently represents a C1-8 alkyl, C2-8 alkenyl, C2-8 alkynyl, or C6-8 aryl group; R4 represents a C1-8 alkylene, C2-8 alkenylene, C2-8 alkynylene, or C6-8 arylene group; and n represents 1 or 2. When n is 1, X represents a fluorine atom, trifluoromethyl group, C1-8 alkoxy group, C2-8 alkenyloxy group, C6-8 aryloxy group, or C2-8 acyloxy group, C1-8 sulfonyloxy group, isocyanato group, isothiocyanato group, or cyano group. When n is 2, X represents a C1-8 alkylene group, C1-8 alkylenedioxy group, C2-8 alkenylene group, C2-8 alkenylenedioxy group, C2-8 alkynylene group, C2-8 alkynylenedioxy group, C6-8 arylene group, C6-8 arylenedioxy group, C2-8 diacyloxy group, oxygen atom, or direct bond.Type: GrantFiled: April 13, 2007Date of Patent: September 21, 2010Assignees: Denso Corporation, Adeka CorporationInventors: Kouhei Yamamoto, Satoru Suzuki, Manabu Yamada, Takayuki Taki, Atsuo Tomita, Hiroto Asano
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Patent number: 7608659Abstract: A conductive material mixed composition obtained by synthesizing a piperidyl group-containing high-molecular-weight polymer or copolymer that is composed of the constitutional unit represented by general formula (1) below and insoluble in tetrahydrofuran (THF) by polymerization in a liquid phase, immediately followed by mixing a conductive material with the polymer or copolymer in the liquid phase: wherein R1 represents a hydrogen atom, a hydroxyl group, an oxyl radical, an alkyl group having 1 to 18 carbon atoms, or an alkoxy group having 1 to 18 carbon atoms; R2 and R3 each independently represent a hydrogen atom or a methyl group; R4 represents a hydrogen atom, an alkali metal atom, an alkyl group having 1 to 50 carbon atoms, an alkenyl group having 1 to 50 carbon atoms, an alkyl group having 1 to 50 carbon atoms, or a haloalkyl group having 1 to 50 carbon atoms; n represents a number of not less than 30; and m represents 0 or a positive number.Type: GrantFiled: June 17, 2008Date of Patent: October 27, 2009Assignee: Adeka CorporationInventors: Takayuki Taki, Atsuo Tomita, Hiroto Asano
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Publication number: 20090072204Abstract: A conductive material mixed composition obtained by synthesizing a piperidyl group-containing high-molecular-weight polymer or copolymer that is composed of the constitutional unit represented by general formula (1) below and insoluble in tetrahydrofuran (THF) by polymerization in a liquid phase, immediately followed by mixing a conductive material with the polymer or copolymer in the liquid phase: wherein R1 represents a hydrogen atom, a hydroxyl group, an oxyl radical, an alkyl group having 1 to 18 carbon atoms, or an alkoxy group having 1 to 18 carbon atoms; R2 and R3 each independently represent a hydrogen atom or a methyl group; R4 represents a hydrogen atom, an alkali metal atom, an alkyl group having 1 to 50 carbon atoms, an alkenyl group having 1 to 50 carbon atoms, an aralkyl group having 1 to 50 carbon atoms, or a haloalkyl group having 1 to 50 carbon atoms; n represents a number of not less than 30; and m represents 0 or a positive number.Type: ApplicationFiled: June 17, 2008Publication date: March 19, 2009Applicant: ADEKA CORPORATIONInventors: Takayuki TAKI, Atsuo Tomita, Hiroto Asano
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Publication number: 20070243470Abstract: A nonaqueous electrolyte solution in which an electrolyte salt is dissolved in an organic solvent includes, includes at least one or more compounds selected from the silicon compounds represented by general formula (1), (2), or (3) below: (In the formulae, each of R1, R2, and R3 independently represents a C1-8 alkyl, C2-8 alkenyl, C2-8 alkynyl, or C6-8 aryl group; R4 represents a C1-8 alkylene, C2-8 alkenylene, C2-8 alkynylene, or C6-8 arylene group; and n represents 1 or 2. When n is 1, X represents a fluorine atom, trifluoromethyl group, C1-8 alkoxy group, C2-8 alkenyloxy group, C6-8 aryloxy group, or C2-8 acyloxy group, C1-8 sulfonyloxy group, isocyanato group, isothiocyanato group, or cyano group. When n is 2, X represents a C1-8 alkylene group, C1-8 alkylenedioxy group, C2-8 alkenylene group, C2-8 alkenylenedioxy group, C2-8 alkynylene group, C2-8 alkynylenedioxy group, C6-8 arylene group, C6-8 arylenedioxy group, C2-8 diacyloxy group, oxygen atom, or direct bond.Type: ApplicationFiled: April 13, 2007Publication date: October 18, 2007Applicants: DENSO CORPORATION, ADEKA CORPORATIONInventors: Kouhei Yamamoto, Satoru Suzuki, Manabu Yamada, Takayuki Taki, Atsuo Tomita, Hiroto Asano
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Publication number: 20070191534Abstract: A conductive material mixed composition obtained by synthesizing a piperidyl group-containing high-molecular-weight polymer or copolymer that is composed of the constitutional unit represented by general formula (1) below and insoluble in tetrahydrofuran (THF) by polymerization in a liquid phase, immediately followed by mixing a conductive material with the polymer or copolymer in the liquid phase: wherein R1 represents a hydrogen atom, a hydroxyl group, an oxyl radical, an alkyl group having 1 to 18 carbon atoms, or an alkoxy group having 1 to 18 carbon atoms; R2 and R3 each independently represent a hydrogen atom or a methyl group; R4 represents a hydrogen atom, an alkali metal atom, an alkyl group having 1 to 50 carbon atoms, an alkenyl group having 1 to 50 carbon atoms, an aralkyl group having 1 to 50 carbon atoms, or a haloalkyl group having 1 to 50 carbon atoms; n represents a number of not less than 30; and m represents 0 or a positive number.Type: ApplicationFiled: February 8, 2007Publication date: August 16, 2007Applicant: ADEKA CORPORATIONInventors: Takayuki Taki, Atsuo Tomita, Hiroto Asano
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Publication number: 20070148555Abstract: Disclosed is a nonaqueous electrolyte composition obtained by dissolving an electrolyte salt in an organic solvent. This nonaqueous electrolyte composition is characterized in that the organic solvent is a mixed organic solvent containing 20-35 volume % of ethylene carbonate (a), 35-45 volume % of ethyl methyl carbonate (b), 15-35 volume % of dimethyl carbonate (c) and 3-15 volume % of diethyl carbonate or propylene carbonate (d). With this nonaqueous electrolyte composition, there can be obtained a nonaqueous electrolyte secondary battery having excellent low-temperature characteristics as well as excellent storage characteristics or cycle characteristics.Type: ApplicationFiled: April 28, 2005Publication date: June 28, 2007Applicant: ADEKA CORPORATIONInventors: Atsushi Fukaya, Kyohei Usami, Naomi Awano, HIroyuki Tachikawa, Takayuki Taki