Patents by Inventor Taichi Sakamoto
Taichi Sakamoto 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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Publication number: 20240145765Abstract: A non-aqueous electrolyte power storage device in which a coating material having a silanol group is present at least on a surface of an electrode active material layer and a sulfur-based material is contained in a cell, the electrode active material layer contains an electrode active material and a resin-based binder, the electrode active material is an active material capable of being alloyed with a metal element identical to an ion species responsible for electrical conduction or an active material capable of absorbing ions responsible for electrical conduction, and the coating material having a silanol group is a silicate containing a siloxane bond as a component or a silica fine particle aggregate (containing a siloxane bond as a component).Type: ApplicationFiled: October 14, 2020Publication date: May 2, 2024Applicants: ATTACCATO Limited Liability Company, ADEKA CorporationInventors: Takashi Mukai, Naoto Yamashita, Yuta Ikeuchi, Taichi Sakamoto, Kenji Kakiage, Tomofumi Yokomizo, Yohei Aoyama
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Patent number: 11973210Abstract: To provide a negative electrode for nonaqueous electrolyte secondary batteries, by which the structural deterioration of the electrode is suppressed and cycle characteristics can be improved by absorbing the expansion and contraction of a silicon-based active material placed in the inside of a current collector made of porous metal, and a nonaqueous electrolyte secondary battery including the same. A negative electrode for nonaqueous electrolyte secondary batteries, having a current collector made of porous metal, and a negative electrode material placed in pores of the porous metal, the negative electrode material including a negative electrode active material including a silicon-based material; a skeleton forming agent including a silicate having a siloxane bond; a conductive additive; a binder; and a fibrous material.Type: GrantFiled: January 27, 2022Date of Patent: April 30, 2024Assignee: HONDA MOTOR CO., LTDInventors: Toshimitsu Tanaka, Kiyoshi Tanaami, Takashi Mukai, Yuta Ikeuchi, Taichi Sakamoto, Naoto Yamashita
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Patent number: 11955637Abstract: To provide an electrode for non-aqueous electrolyte batteries, which traps hydrogen sulfide gas, generated from the inside thereof for some reason, in the electrode, and suppresses the outflow of hydrogen sulfide gas to the outside of the battery. An electrode for lithium ion batteries includes a coating material which contains a silanol group and is present on at least a surface of an active material layer. The active material layer contains a sulfur-based material and a resin-based binder. The sulfur-based material is an active material capable of alloying with lithium metal or an active material capable of occluding lithium ions. The coating material containing the silanol group is a silicate having a siloxane bond or a silica fine particle aggregate having a siloxane bond as a component.Type: GrantFiled: November 22, 2019Date of Patent: April 9, 2024Assignees: ATTACCATO LIMITED LIABILITY COMPANY, ADEKA CORPORATIONInventors: Takashi Mukai, Naoto Yamashita, Yuta Ikeuchi, Taichi Sakamoto, Kenji Kakiage, Hiroyuki Osada, Yohei Aoyama
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Patent number: 11942623Abstract: Provided are a negative electrode that is for use in a non-aqueous electrolyte secondary battery, includes a porous metal body as a current collector, contains a skeleton-forming agent highly infiltrated in the current collector so that it is less likely to suffer from structural degradation and provides improved cycle durability; and a non-aqueous electrolyte secondary battery including such a negative electrode. The negative electrode for use in a non-aqueous electrolyte secondary battery includes a current collector including a porous metal body; a first negative electrode material disposed in pores of the porous metal body and including a conductive aid, a binder, and a negative electrode active material including a silicon-based material; and a second negative electrode material disposed in pores of the porous metal body and including a skeleton-forming agent including a silicate having a siloxane bond.Type: GrantFiled: January 27, 2022Date of Patent: March 26, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Kiyoshi Tanaami, Toshimitsu Tanaka, Yuji Isogai, Makiko Takahashi, Shintaro Aoyagi, Takashi Mukai, Yuta Ikeuchi, Taichi Sakamoto, Naoto Yamashita
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Patent number: 11870074Abstract: An object is to provide a non-aqueous electrolyte secondary battery negative electrode that can suppress a deterioration in durability and improve energy density, and a non-aqueous electrolyte secondary battery including the same. A non-aqueous electrolyte secondary battery negative electrode, comprising: a collector formed of a porous metal body, and a negative electrode material disposed in pores of the porous metal body, wherein the negative electrode material comprises a negative electrode active material formed of a silicon-based material, a skeleton-forming agent comprising a silicate having a siloxane bond, a conductivity aid, and a binder.Type: GrantFiled: July 6, 2021Date of Patent: January 9, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Kiyoshi Tanaami, Makiko Takahashi, Tomohiro Kinoshita, Shintaro Aoyagi, Yuji Isogai, Takashi Mukai, Yuta Ikeuchi, Taichi Sakamoto, Naoto Yamashita
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Publication number: 20230387549Abstract: Properties of a porous film used as a separator of a lithium ion cell are improved. A porous film (separator) of the present invention is a porous film including: a porous base substance S; and a coating film CF arranged on a surface of the porous base substance, the coating film includes: alkali silicate; and a first filler, the first filler is made of inorganic particles, and a content of the alkali silicate is equal to or more than 0.05 weight % with respect to the inorganic particles. The inorganic particle includes a material selected from nano silica, micro silica, carbon nanotube, talc, alumina, boehmite, aluminum hydroxide and glass fiber, and the porous film includes a second filler (a hydrophilic group of a cellulose is substituted with a hydrophobic group), a content of which is equal to or more than 0.05 weight % with respect to the inorganic particles. By usage of the porous film, the cell properties such as the thermal resistance and the cycle property can be improved.Type: ApplicationFiled: August 4, 2021Publication date: November 30, 2023Inventors: Ryo ISHIGURO, Satoru NAKAMURA, Yusuke KUKEN, Takashi MUKAI, Yuta IKEUCHI, Taichi SAKAMOTO, Keita TORISU, Naoto YAMASHITA
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Publication number: 20230369564Abstract: Provided is an electrode mixture used for an all-solid-state sodium storage battery that can maintain a high discharging capacity in a room temperature environment and exhibit excellent charge-discharge cycle characteristics. Further provided is a storage battery comprising the same. An object of the present invention is to provide an electrode mixture used for an all-solid-state sodium storage battery, the electrode mixture comprising an active material, wherein the active material is a cluster formed of polyphosphate acid transition metal oxide with a plurality of individual particles connected together, each particle having a particle size within the range of 0.1 ?m to 100 ?m.Type: ApplicationFiled: September 3, 2021Publication date: November 16, 2023Inventors: Taichi SAKAMOTO, Yuta IKEUCHI, Takashi MUKAI, Hiroshi SENOH, Hideaki TANAKA, Masahiro YANAGIDA, Hideo YAMAUCHI, I, Junichi IKEJIRI, Kei TSUNODA, Ayumu TANAKA, Fumio SATO
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Patent number: 11495799Abstract: To provide a negative electrode of a lithium ion battery excellent in cycle life characteristics. The negative electrode for a lithium ion battery includes an Si-based material as an active material, wherein a skeleton-forming agent including a silicate having a siloxane bond or a phosphate having an aluminophosphate bond as an ingredient is present on the surface and inside of an active material layer, and the skeleton of the active material is formed with the skeleton-forming agent.Type: GrantFiled: March 25, 2017Date of Patent: November 8, 2022Assignee: ATTACCATO LIMIIED LIABILITY COMPANYInventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Naoto Yamashita, Daichi Iwanari, Kazuma Yoshida, Kazuyoshi Tanaka
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Publication number: 20220293948Abstract: Characteristics of a battery are improved. The nonaqueous electrolyte secondary battery of the present application includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte solution. The positive electrode has a positive electrode active material and a binder for positive electrode. Then, the positive electrode active material has at least an alkali metal element as a constituent element, and the binder for positive electrode has cellulose and a solvent, and carbon dioxide gas is dissolved in the solvent. Further, a part or all of the surface of the positive electrode active material is coated with the cellulose, and a carbonate compound of the alkali metal element is coated on a part or all of the surface of the cellulose.Type: ApplicationFiled: October 30, 2018Publication date: September 15, 2022Inventors: Takashi MUKAI, Yuta IKEUCHI, Taichi SAKAMOTO, Naoto YAMASHITA, Ryou ISHIGURO, Satoru NAKAMURA
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Publication number: 20220280902Abstract: A slurry storage device that stores an aqueous slurry containing a high nickel material prepared by a dispersion device which mixes a powder and a solvent, the device includes a holding unit that holds the aqueous slurry, and a pH value rise suppressing unit that suppresses a rise in a pH value of the aqueous slurry.Type: ApplicationFiled: May 24, 2022Publication date: September 8, 2022Inventors: Keiichiro Onishi, Keiichi Asami, Takashi Mukai, Taichi Sakamoto, Hideaki Tanaka, Hiroshi Senoh, Masahiro Yanagida
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Publication number: 20220246905Abstract: Provided are a negative electrode that is for use in a non-aqueous electrolyte secondary battery, includes a porous metal body as a current collector, contains a skeleton-forming agent highly infiltrated in the current collector so that It is less likely to suffer from structural degradation and provides improved cycle durability; and a non-aqueous electrolyte secondary battery including such a negative electrode. The negative electrode for use in a non-aqueous electrolyte secondary battery includes a current collector including a porous metal body; a first negative electrode material disposed in pores of the porous metal body and including a conductive aid, a binder, and a negative electrode active material including a silicon-based material; and a second negative electrode material disposed in pores of the porous metal body and including a skeleton-forming agent including a silicate having a siloxane bond.Type: ApplicationFiled: January 27, 2022Publication date: August 4, 2022Inventors: Kiyoshi Tanaami, Toshimitsu Tanaka, Yuji Isogai, Makiko Takahashi, Shintaro Aoyagi, Takashi Mukai, Yuta Ikeuchi, Taichi Sakamoto, Naoto Yamashita
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Publication number: 20220246919Abstract: To provide a negative electrode for nonaqueous electrolyte secondary batteries, by which durability deterioration and structural deterioration of the electrode is suppressed, and cycle durability and energy density can be improved by suppressing generation of voids in the inside of the porous metal, and a nonaqueous electrolyte secondary battery including the same. A negative electrode for nonaqueous electrolyte secondary batteries, having a current collector made of porous metal, and a negative electrode material placed in pores of the porous metal, the negative electrode material including a first negative electrode active material placed on an internal surface of each of the pores and including a silicon-based material; a skeleton forming agent placed on the first negative electrode active material and including a silicate having a siloxane bond; and a second negative electrode active material placed on the skeleton forming agent.Type: ApplicationFiled: January 27, 2022Publication date: August 4, 2022Inventors: Kiyoshi TANAAMI, Toshimitsu TANAKA, Yuji ISOGAI, Makiko TAKAHASHI, Shintaro AOYAGI, Takashi MUKAI, Yuta IKEUCHI, Taichi SAKAMOTO, Naoto YAMASHITA
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Publication number: 20220246904Abstract: To provide a negative electrode for nonaqueous electrolyte secondary batteries, by which the structural deterioration of the electrode is suppressed and cycle characteristics can be improved by absorbing the expansion and contraction of a silicon-based active material placed in the inside of a current collector made of porous metal, and a nonaqueous electrolyte secondary battery including the same. A negative electrode for nonaqueous electrolyte secondary batteries, having a current collector made of porous metal, and a negative electrode material placed in pores of the porous metal, the negative electrode material including a negative electrode active material including a silicon-based material; a skeleton forming agent including a silicate having a siloxane bond; a conductive additive; a binder; and a fibrous material.Type: ApplicationFiled: January 27, 2022Publication date: August 4, 2022Inventors: Toshimitsu TANAKA, Kiyoshi TANAAMI, Takashi MUKAI, Yuta IKEUCHI, Taichi SAKAMOTO, Naoto YAMASHITA
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Publication number: 20220231299Abstract: To provide a nonaqueous electrolyte secondary battery which enables to suppress durability deterioration, improve energy density, and further suppress a decrease in the function of the nonaqueous electrolyte secondary battery cell. A nonaqueous electrolyte secondary battery, comprising: a positive electrode; and a negative electrode, wherein the negative electrode has: a current collector comprising a porous metal body; and a negative electrode material disposed in pores of the porous metal body, the negative electrode material comprises a negative electrode active material comprising a silicon-based material, a skeleton-forming agent comprising a silicate having a siloxane bond, a conductive auxiliary, and a binder, and a content of the skeleton-forming agent in an outside in a surface direction of the negative electrode is higher than a content of the skeleton-forming agent in an inside in the surface direction of the negative electrode.Type: ApplicationFiled: January 19, 2022Publication date: July 21, 2022Inventors: Kiyoshi Tanaami, Toshimitsu Tanaka, Yuji Isogai, Shintaro Aoyagi, Makiko Takahashi, Tomohiro Kinoshita, Takashi Mukai, Yuta Ikeuchi, Taichi Sakamoto, Naoto Yamashita
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Patent number: 11289706Abstract: A lithium ion secondary battery includes a positive electrode having a positive electrode active material layer on a current collector, a negative electrode having a negative electrode active material layer on a current collector, and a separator disposed between the positive electrode and the negative electrode and impregnated with a non-aqueous electrolyte solution. The positive electrode active material layer contains a positive electrode active material and a binder, the negative electrode active material layer contains a negative electrode active material and a binder, the binder of the negative electrode active material layer contains a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid, and the separator includes a polymeric base material containing an inorganic compound or includes a polymer having a melting point or glass transition temperature of 140° C. or higher.Type: GrantFiled: October 11, 2017Date of Patent: March 29, 2022Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Yuta Ikeuchi, Taichi Sakamoto, Takashi Mukai, Masahiro Yanagida, Junichi Fujishige, Masako Kinno, Erina Takahashi
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Patent number: 11251418Abstract: Provided is a method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery containing an alkali metal complex oxide, the method making it possible to reliably deaerate surplus carbonic acid gas after an alkali component of a slurry containing the alkali metal complex oxide is neutralized within a short period of time. The method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery includes a step of manufacturing an electrode slurry including a step of performing a neutralization treatment on an alkali component in the slurry by using inorganic carbon dissolved in a solvent of the slurry and a step of deaerating the inorganic carbon in the slurry as carbonic acid gas by causing cavitation.Type: GrantFiled: February 20, 2018Date of Patent: February 15, 2022Assignees: NIHON SPINDLE MANUFACTURING CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Naoto Yamashita, Masahiro Yanagida, Keiichi Asami, Keiichiro Onishi
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Publication number: 20220020989Abstract: To provide an electrode for non-aqueous electrolyte batteries, which traps hydrogen sulfide gas, generated from the inside thereof for some reason, in the electrode, and suppresses the outflow of hydrogen sulfide gas to the outside of the battery. An electrode for lithium ion batteries includes a coating material which contains a silanol group and is present on at least a surface of an active material layer. The active material layer contains a sulfur-based material and a resin-based binder. The sulfur-based material is an active material capable of alloying with lithium metal or an active material capable of occluding lithium ions. The coating material containing the silanol group is a silicate having a siloxane bond or a silica fine particle aggregate having a siloxane bond as a component.Type: ApplicationFiled: November 22, 2019Publication date: January 20, 2022Applicants: ATTACCATO Limited Liability Company, ADEKA CorporationInventors: Takashi Mukai, Naoto Yamashita, Yuta Ikeuchi, Taichi Sakamoto, Kenji Kakiage, Hiroyuki Osada, Yohei Aoyama
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Publication number: 20220013783Abstract: An object is to provide a non-aqueous electrolyte secondary battery negative electrode that can suppress a deterioration in durability and improve energy density, and a non-aqueous electrolyte secondary battery including the same. A non-aqueous electrolyte secondary battery negative electrode, comprising: a collector formed of a porous metal body, and a negative electrode material disposed in pores of the porous metal body, wherein the negative electrode material comprises a negative electrode active material formed of a silicon-based material, a skeleton-forming agent comprising a silicate having a siloxane bond, a conductivity aid, and a binder.Type: ApplicationFiled: July 6, 2021Publication date: January 13, 2022Inventors: Kiyoshi TANAAMI, Makiko TAKAHASHI, Tomohiro KINOSHITA, Shintaro AOYAGI, Yuji ISOGAI, Takashi MUKAI, Yuta IKEUCHI, Taichi SAKAMOTO, Naoto YAMASHITA
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Publication number: 20210288326Abstract: Provided are a lithium ion secondary battery in which heat generation is suppressed when the battery is internally short-circuited by an external impact, such as nail penetration or collapse, or short-circuited by foreign matter contamination or the like; and an electrical appliance using the battery. More specifically, the following lithium ion secondary battery and electrical appliance comprising the lithium ion secondary battery are provided.Type: ApplicationFiled: October 11, 2017Publication date: September 16, 2021Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Yuta IKEUCHI, Taichi SAKAMOTO, Takashi MUKAI, Masahiro YANAGIDA, Junichi FUJISHIGE, Masako KINNO, Erina TAKAHASHI
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Publication number: 20210288325Abstract: An object is to provide a non-aqueous electrolyte secondary battery negative electrode which can improve a battery life as compared with a conventional one, a non-aqueous electrolyte secondary battery including it and a method for manufacturing it. A non-aqueous electrolyte secondary battery negative electrode includes: a collector; and a negative electrode layer formed on the collector, the negative electrode layer includes a negative electrode active material, a conductivity aid, a binder and a skeleton-forming agent including a silicate having a siloxane bond or a phosphate having a phosphate bond and the skeleton-forming agent is arranged on at least the interface of the negative electrode layer with the collector.Type: ApplicationFiled: March 10, 2021Publication date: September 16, 2021Inventors: Makiko Takahashi, Kiyoshi Tanaami, Tomohiro Kinoshita, Shintaro Aoyagi, Takashi Mukai, Yuta Ikeuchi, Taichi Sakamoto, Naoto Yamashita