Patents by Inventor Atsuki Shibuya
Atsuki Shibuya 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: 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: 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