Patents by Inventor Tomoki Hatsumori
Tomoki Hatsumori 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).
-
Patent number: 11742485Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell or a sodium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LiFeaMnbMcPO4, formula (B): LiFeaMnbMcSiO4, or formula (C): NaFegMnhQiPO4; and carbon derived from a cellulose nanofiber supported thereon.Type: GrantFiled: July 18, 2019Date of Patent: August 29, 2023Assignee: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki Yamashita, Tomoki Hatsumori, Takaaki Ogami
-
Patent number: 11646405Abstract: A positive electrode active substance for a secondary cell, where the positive electrode active substance is capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The positive electrode active substance contains 0.3 to 5 mass % of graphite, 0.1 to 4 mass % of carbon obtained by carbonizing a water-soluble carbon material, or 0.1 to 5 mass % of a metal fluoride is supported on a composite containing a compound which contains at least iron or manganese, where the compound is represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4, and carbon obtained by carbonizing a cellulose nanofiber.Type: GrantFiled: September 17, 2015Date of Patent: May 9, 2023Assignee: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki Yamashita, Tomoki Hatsumori, Atsushi Nakamura, Takaaki Ogami
-
Patent number: 10964950Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which one or two selected from the group consisting of a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material, and 0.1 to 5 mass % of a metal fluoride are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFeaMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.Type: GrantFiled: September 17, 2015Date of Patent: March 30, 2021Assignee: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki Yamashita, Tomoki Hatsumori, Atsushi Nakamura, Takaaki Ogami
-
Patent number: 10601042Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFeaMnbMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.Type: GrantFiled: September 17, 2015Date of Patent: March 24, 2020Assignee: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki Yamashita, Tomoki Hatsumori, Atsushi Nakamura, Takaaki Ogami
-
Publication number: 20190348680Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell or a sodium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LiFeaMnbMcPO4, formula (B): LiFeaMnbMcSiO4, or formula (C): NaFegMnhQiPO4; and carbon derived from a cellulose nanofiber supported thereon.Type: ApplicationFiled: July 18, 2019Publication date: November 14, 2019Applicant: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Takaaki OGAMI
-
Patent number: 10461330Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LifeaMnbMcPO4; and carbon derived from a cellulose nanofiber supported thereon.Type: GrantFiled: September 15, 2015Date of Patent: October 29, 2019Assignee: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki Yamashita, Tomoki Hatsumori, Takaaki Ogami
-
Publication number: 20180083285Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which one or two selected from the group consisting of a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material, and 0.1 to 5 mass % of a metal fluoride are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFenMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.Type: ApplicationFiled: September 17, 2015Publication date: March 22, 2018Applicant: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Atsushi NAKAMURA, Takaaki OGAMI
-
Publication number: 20180083280Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material are supported on an oxide containing at least iron or manganese, the oxide represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4.Type: ApplicationFiled: September 17, 2015Publication date: March 22, 2018Applicant: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Atsushi NAKAMURA, Takaaki OGAMI
-
Publication number: 20180053929Abstract: A positive electrode active substance for a secondary cell, where the positive electrode active substance is capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The positive electrode active substance contains 0.3 to 5 mass % of graphite, 0.1 to 4 mass % of carbon obtained by carbonizing a water-soluble carbon material, or 0.1 to 5 mass % of a metal fluoride is supported on a composite containing a compound which contains at least iron or manganese, where the compound is represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4, and carbon obtained by carbonizing a cellulose nanofiber.Type: ApplicationFiled: September 17, 2015Publication date: February 22, 2018Applicant: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Atsushi NAKAMURA, Takaaki OGAMI
-
Publication number: 20170301919Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell or a sodium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LiFeaMnbMcPO4, formula (B): LiFeaMnbMcSiO4, or formula (C): NaFegMnhQiPO4; and carbon derived from a cellulose nanofiber supported thereon.Type: ApplicationFiled: September 15, 2015Publication date: October 19, 2017Applicant: TAIHEIYO CEMENT CORPORATIONInventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Takaaki OGAMI
-
Patent number: 9650247Abstract: A method for efficiently producing a high-purity metal hydride without contamination of other metals while initiating reaction rapidly is provided. A method for producing a metal hydride from a metal selected from the group consisting of Group 2 metals and Group 3 metals comprising: (A) charging the pressure resistant container with the metal, introducing hydrogen into the container, and heating the container to initiate reaction, wherein a gauge pressure (a) is set to 0.1 to 1.5 MPa, a heating temperature (b) is set to 50 to 250° C., and a product of the gauge pressure and the heating temperature, a×b, is set in the range of 20 to 100; (B) stopping the introduction of hydrogen to allow the reaction to proceed when the temperature in the reaction container is increased to a temperature higher by 10 to 100° C. than the heating temperature; (C) introducing hydrogen of 0.1 to 1.Type: GrantFiled: September 25, 2014Date of Patent: May 16, 2017Assignee: TAIHEIYO CEMENT CORPORATIONInventors: Tetsuya Ishimoto, Shoji Suzuki, Katsumi Matsui, Tomoki Hatsumori, Kazuhiko Tokoyoda
-
Publication number: 20160244328Abstract: A method for efficiently producing a high-purity metal hydride without contamination of other metals while initiating reaction rapidly is provided. A method for producing a metal hydride from a metal selected from the group consisting of Group 2 metals and Group 3 metals comprising: (A) charging the pressure resistant container with the metal, introducing hydrogen into the container, and heating the container to initiate reaction, wherein a gauge pressure (a) is set to 0.1 to 1.5 MPa, a heating temperature (b) is set to 50 to 250° C., and a product of the gauge pressure and the heating temperature, a×b, is set in the range of 20 to 100; (B) stopping the introduction of hydrogen to allow the reaction to proceed when the temperature in the reaction container is increased to a temperature higher by 10 to 100° C. than the heating temperature; (C) introducing hydrogen of 0.1 to 1.Type: ApplicationFiled: September 25, 2014Publication date: August 25, 2016Applicant: TAIHEIYO CEMENT CORPORATIONInventors: Tetsuya ISHIMOTO, Shoji SUZUKI, Katsumi MATSUI, Tomoki HATSUMORI, Kazuhiko TOKOYODA
-
Patent number: 9302913Abstract: There is provided a method for producing a high-purity metal nitride by simple processes with good yield. Specifically provided is a method for producing a metal nitride including heating a metal hydride under a nitrogen gas or an ammonia gas.Type: GrantFiled: August 11, 2011Date of Patent: April 5, 2016Assignee: TAIHEIYO CEMENT CORPORATIONInventors: Kazuhiko Tokoyoda, Shoji Suzuki, Tomoki Hatsumori
-
Publication number: 20130129600Abstract: There is provided a method for producing a high-purity metal nitride by simple processes with good yield. Specifically provided is a method for producing a metal nitride including heating a metal hydride under a nitrogen gas or an ammonia gas.Type: ApplicationFiled: August 11, 2011Publication date: May 23, 2013Applicant: TAIHEIYO CEMENT CORPORATIONInventors: Kazuhiko Tokoyoda, Shoji Suzuki, Tomoki Hatsumori