Patents by Inventor Itaru Honma
Itaru Honma 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: 20210020950Abstract: A negative electrode for a power generation battery which is capable of suppressing hydrogen generation and a reduction in battery performance and performing stable power generation for a long time, a gastric acid battery, a metal ion secondary battery, a system, and a method for using a battery are provided. A mixture containing: a negative electrode powder made of a metal, an alloy, or a compound having a standard electrode potential lower than the standard hydrogen electrode potential; and a conductive polymer. The negative electrode powder consists of a zinc or magnesium powder, for example. The conductive polymer contains an acrylic resin or an epoxy resin and a conductive aid, for example. The mixture contains 60 to 90% by weight of the negative electrode powder, with the remainder being the conductive polymer and the conductive aid.Type: ApplicationFiled: September 30, 2020Publication date: January 21, 2021Applicant: TOHOKU UNIVERSITYInventor: Itaru HONMA
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Patent number: 10741824Abstract: A battery includes a main body having a space therein, and including a channel communicating between an outside and the space; a pair of electrodes adjoining the space; and a valve that closes the channel responsive to pH.Type: GrantFiled: June 27, 2018Date of Patent: August 11, 2020Assignee: TOHOKU UNIVERSITYInventors: Shinya Yoshida, Tsutomu Nakamura, Hiroshi Hyodo, Itaru Honma
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Patent number: 10593994Abstract: It is an objective of the invention to provide a quasi-solid state electrolyte that has a well-balanced combination of contact performance with electrode active materials, conductivity, and chemical and structural stability, each at a high level, and an all solid state lithium secondary battery using the quasi-solid state electrolyte. There is provided a quasi-solid state electrolyte comprising: metal oxide particles; and an ionic conductor, the ionic conductor being a mixture of either a glyme or DEME-TFSI and a lithium salt that includes LiFSI, and being carried by the metal oxide particles.Type: GrantFiled: September 12, 2016Date of Patent: March 17, 2020Assignees: HITACHI, LTD., TOHOKU UNIVERSITYInventors: Erina Yokoyama, Jun Kawaji, Yoshiyuki Ganbe, Nobuto Oka, Itaru Honma
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Patent number: 10193152Abstract: A lithium ion secondary battery including: a cathode including a plurality cathode active material particles; an electrolyte; and an anode, wherein a cathode active material particle of the plurality of cathode active material particles has a plate-shaped crystal structure having an aspect ratio of 2 to 1000, wherein a major surface in at least one direction of the plate-shaped crystal structure is a 111 face, wherein the cathode active material particle also has a spinel-type crystal structure, and wherein the cathode active material particle has a composition represented by the formula LiCo2-xNixO4, wherein 0<x<2.Type: GrantFiled: September 9, 2016Date of Patent: January 29, 2019Assignees: SAMSUNG ELECTRONICS CO., LTD., TOHOKU TECHNO ARCH CO., LTD.Inventors: Itaru Honma, Murukanahally Kempaiah Devaraju, Yuichi Aihara, Seitaro Ito
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Publication number: 20180315989Abstract: A battery includes a main body having a space therein, and including a channel communicating between an outside and the space; a pair of electrodes adjoining the space; and a valve that closes the channel responsive to pH.Type: ApplicationFiled: June 27, 2018Publication date: November 1, 2018Applicant: TOHOKU UNIVERSITYInventors: Shinya YOSHIDA, Tsutomu NAKAMURA, Hiroshi HYODO, Itaru HONMA
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Publication number: 20180230290Abstract: The present invention relates to a thermally conductive polymer composition. The thermally conductive polymer composition comprises (a) 30 to 60 parts by weight of a polymer, and (b) 100 parts by weight of a boron nitride filler comprising, (b-1) 70 to 99 parts by weight of a spherical boron nitride filler, and (b-2) 1 to 30 parts by weight of a sheet boron nitride filler having a thickness of 5 to 500 nm, a surface area of 4 to 50 m2/g and an aspect ratio of 100:1 to 10000:1.Type: ApplicationFiled: February 8, 2018Publication date: August 16, 2018Inventors: Yuji Saga, Takeshi Kondo, Yuri Noma, Takaaki Tomai, Itaru Honma
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Patent number: 9620297Abstract: An electrode material for electricity storage devices includes: an active material including at least one of quinone having a halogen group and hydroquinone having a halogen group; and a porous body supporting the active material.Type: GrantFiled: March 4, 2014Date of Patent: April 11, 2017Assignee: TOHOKU UNIVERSITYInventors: Itaru Honma, Satoshi Mitani, Takaaki Tomai
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Publication number: 20170084949Abstract: It is an objective of the invention to provide a quasi-solid state electrolyte that has a well-balanced combination of contact performance with electrode active materials, conductivity, and chemical and structural stability, each at a high level, and an all solid state lithium secondary battery using the quasi-solid state electrolyte. There is provided a quasi-solid state electrolyte comprising: metal oxide particles; and an ionic conductor, the ionic conductor being a mixture of either a glyme or DEME-TFSI and a lithium salt that includes LiFSI, and being carried by the metal oxide particles.Type: ApplicationFiled: September 12, 2016Publication date: March 23, 2017Applicants: HITACHI, LTD., TOHOKU UNIVERSITYInventors: Erina YOKOYAMA, Jun KAWAJI, Yoshiyuki GANBE, Nobuto OKA, Itaru HONMA
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Publication number: 20170069912Abstract: A lithium ion secondary battery including: a cathode including a plurality cathode active material particles; an electrolyte; and an anode, wherein a cathode active material particle of the plurality of cathode active material particles has a plate-shaped crystal structure having an aspect ratio of 2 to 1000, wherein a major surface in at least one direction of the plate-shaped crystal structure is a 111 face, wherein the cathode active material particle also has a spinel-type crystal structure, and wherein the cathode active material particle has a composition represented by the formula LiCo2-xNixO4, wherein 0<x<2.Type: ApplicationFiled: September 9, 2016Publication date: March 9, 2017Inventors: Itaru HONMA, Murukanahally Kempaiah DEVARAJU, Yuichi AIHARA, Seitaro ITO
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Patent number: 9583750Abstract: A secondary battery charged and discharged even after dissolution. The active material in the cathode body and/or the anode body is a liquid, or the active material undergoes phase transition into a liquid is provided. The secondary battery (1) includes: a cathode collector (2), a cathode body (3), a solid electrolyte (4), an anode body (5), and an anode collector (6). The cathode body and the anode body are sealed by the solid electrolyte, the cathode collector, and/or the anode collector. The cathode body and the anode body preferably contain an active material that undergoes phase transition from a solid to a liquid, or to a phase containing a liquid, due to charge and discharge. The cathode body or the anode body preferably contains a liquid active material. A polymeric layer may be inserted between the cathode body and/or the anode body and the solid electrolyte.Type: GrantFiled: June 11, 2012Date of Patent: February 28, 2017Assignee: TOHOKU UNIVERSITYInventors: Yuki Hanyu, Itaru Honma
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Publication number: 20160035498Abstract: An electrode material for electricity storage devices includes: an active material including at least one of quinone having a halogen group and hydroquinone having a halogen group; and a porous body supporting the active material.Type: ApplicationFiled: March 4, 2014Publication date: February 4, 2016Applicant: TOHOKU UNIVERSITYInventors: Itaru HONMA, Satoshi MITANI, TOMAI Tomai
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Publication number: 20140377621Abstract: A secondary battery charged and discharged even after dissolution. The active material in the cathode body and/or the anode body is a liquid, or the active material undergoes phase transition into a liquid is provided. The secondary battery (1) includes: a cathode collector (2), a cathode body (3), a solid electrolyte (4), an anode body (5), and an anode collector (6). The cathode body and the anode body are sealed by the solid electrolyte, the cathode collector, and/or the anode collector. The cathode body and the anode body preferably contain an active material that undergoes phase transition from a solid to a liquid, or to a phase containing a liquid, due to charge and discharge. The cathode body or the anode body preferably contains a liquid active material. A polymeric layer may be inserted between the cathode body and/or the anode body and the solid electrolyte.Type: ApplicationFiled: June 11, 2012Publication date: December 25, 2014Applicant: TOHOKU UNIVERSITYInventors: Yuki Hanyu, Itaru Honma
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Patent number: 7625673Abstract: An electrode material for an electrochemical device comprising a composite of a particulate conductive material and a metal oxide is prepared by mixing and dispersing the particulate conductive material with a colloidal solution of an oxide of an element in a range of from Group 3 to Group 12 in the fourth, fifth and sixth periods of the Periodic Table and heating the mixture. This composite has a high capacity even at a high current density and good filling properties, and is useful as an electrode material for an electrochemical device such as a lithium secondary battery or an electrochemical capacitor. When the electrode material comprising this composite is used, an electrode can be produced without any binder, and the electrochemical device having good output characteristics can be constructed.Type: GrantFiled: September 6, 2001Date of Patent: December 1, 2009Assignees: Hitachi Maxell, Ltd., Japan as Represented by the President of the University of TokyoInventors: Tetsuichi Kudo, Masaru Miyayama, Keiji Sakai, Yasuo Takeda, Itaru Honma, Hiroshi Abe
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Patent number: 7179356Abstract: A process directed to preparing surfactant-polycrystalline inorganic nanostructured materials having designed microscopic patterns. The process includes forming a polycrystalline inorganic substrate having a flat surface and placing in contact with the flat surface of the substrate a surface having a predetermined microscopic pattern. An acidified aqueous reacting solution is then placed in contact with an edge of the surface having the predetermined microscopic pattern. The solution wicks into the microscopic pattern by capillary action. The reacting solution has an effective amount of a silica source and an effective amount of a surfactant to produce a mesoscopic silica film upon contact of the reacting solution with the flat surface of the polycrystalline inorganic substrate and absorption of the surfactant into the surface. Subsequently an electric field is applied tangentially directed to the surface within the microscopic pattern.Type: GrantFiled: April 11, 2003Date of Patent: February 20, 2007Assignee: The Trustees of Princeton UniversityInventors: Ilhan A. Aksay, Mathias Trau, Srinivas Manne, Itaru Honma, George Whitesides
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Patent number: 6864006Abstract: A proton-conducting membrane, excellent in resistance to heat, durability, dimensional stability and fuel barrier characteristics, and showing excellent proton conductivity at high temperature and a method for producing the same. A proton-conducting membrane includes a carbon-containing compound and inorganic acid, characterized by a phase-separated structure containing a carbon-containing phase containing at least 80% by volume of the carbon-containing compound and inorganic phase containing at least 80% by volume of the inorganic acid, the inorganic phase forming the continuous ion-conducting paths.Type: GrantFiled: January 8, 2002Date of Patent: March 8, 2005Assignees: National Institute of Advanced Industrial Science and Technology, Sekisui Chemical Co., Ltd.Inventors: Itaru Honma, Shigeki Nomura, Toshiya Sugimoto, Osamu Nishikawa
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Publication number: 20040028978Abstract: A proton conducting membrane, excellent in resistance to heat, durability, dimensional stability, flexibility, mechanical strength and fuel barrier characteristics, and showing excellent proton conductivity at high temperature, method for producing the same, and fuel cell using the same. The proton conducting membrane includes a three-dimensionally crosslinked structure (A) containing the silicon-oxygen bond, organic structure (B), structure (C) containing amino group and proton conducting agent (D).Type: ApplicationFiled: February 11, 2003Publication date: February 12, 2004Inventors: Itaru Honma, Toshiya Sugimoto, Shigeki Nomura
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Publication number: 20040020774Abstract: A process directed to preparing surfactant-polycrystalline inorganic nanostructured materials having designed microscopic patterns. The process includes forming a polycrystalline inorganic substrate having a flat surface and placing in contact with the flat surface of the substrate a surface having a predetermined microscopic pattern. An acidified aqueous reacting solution is then placed in contact with an edge of the surface having the predetermined microscopic pattern. The solution wicks into the microscopic pattern by capillary action. The reacting solution has an effective amount of a silica source and an effective amount of a surfactant to produce a mesoscopic silica film upon contact of the reacting solution with the flat surface of the polycrystalline inorganic substrate and absorption of the surfactant into the surface. Subsequently an electric field is applied tangentially directed to the surface within the microscopic pattern.Type: ApplicationFiled: April 11, 2003Publication date: February 5, 2004Inventors: Ilhan A. Aksay, Mathias Trau, Srinivas Manne, Itaru Honma, George Whitesides
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Patent number: 6680138Abstract: It is an object of the present invention to provide a proton-conducting membrane excellent in resistance to heat and durability and showing excellent proton conductivity at high temperature. It is another object of the present invention to provide a method for producing the same and fuel cell using the same. The present invention provides a proton-conducting membrane, comprising an organic material (A), three-dimensionally crosslinked structure (B) containing a specific metal-oxygen bond, agent (C) for imparting proton conductivity, and water (D), wherein the organic material (A) has a number-average molecular weight of 56 to 30,000, and at least 4 carbon atoms connected in series in the main chain, and the organic material (A) and three-dimensionally crosslinked structure (B) are bound to each other via a covalent bond.Type: GrantFiled: September 15, 2000Date of Patent: January 20, 2004Assignees: Electrotechnical Laboratory (Agency of Industrial Science and Technology), Sekisui Chemical Co., Ltd.Inventors: Itaru Honma, Shigeki Nomura, Toshiya Sugimoto, Osamu Nishikawa
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Patent number: 6547940Abstract: A process directed to preparing surfactant-polycrystalline inorganic nanostructured materials having designed microscopic patterns. The process includes forming a polycrystalline inorganic substrate having a flat surface and placing in contact with the flat surface of the substrate a surface having a predetermined microscopic pattern. An acidified aqueous reacting solution is then placed in contact with an edge of the surface having the predetermined microscopic pattern. The solution wicks into the microscopic pattern by capillary action. The reacting solution has an effective amount of a silica source and an effective amount of a surfactant to produce a mesoscopic silica film upon contact of the reacting solution with the flat surface of the polycrystalline inorganic substrate and absorption of the surfactant into the surface. Subsequently an electric field is applied tangentially directed to the surface within the microscopic pattern.Type: GrantFiled: May 7, 2001Date of Patent: April 15, 2003Assignee: The Trustees of Princeton UniversityInventors: Ilhan A. Aksay, Mathias Trau, Srinivas Manne, Itaru Honma, George Whitesides
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Publication number: 20030003340Abstract: A proton-conducting membrane, excellent in resistance to heat, durability, dimensional stability and fuel barrier characteristics, and showing excellent proton conductivity at high temperature and a method for producing the same. A proton-conducting membrane includes a carbon-containing compound and inorganic acid, characterized by a phase-separated structure containing a carbon-containing phase containing at least 80% by volume of the carbon-containing compound and inorganic phase containing at least 80% by volume of the inorganic acid, the inorganic phase forming the continuous ion-conducting paths.Type: ApplicationFiled: January 8, 2002Publication date: January 2, 2003Inventors: Itaru Honma, Shigeki Nomura, Toshiya Sugimoto, Osamu Nishikawa