Patents by Inventor Tomoyuki Shiratsuchi
Tomoyuki Shiratsuchi 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: 11799171Abstract: An all-solid secondary battery including: a cathode including a cathode active material layer; an anode including an anode active material layer; and a solid electrolyte layer including a sulfide solid electrolyte between the cathode active material layer and the anode active material layer, wherein an arithmetic mean roughness (Ra) of an interface between the cathode active material layer and the solid electrolyte layer is about 1 micrometer or less, and a relative density of the solid electrolyte layer is about 80% or more.Type: GrantFiled: December 1, 2020Date of Patent: October 24, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Satoshi Fujiki, Takanobu Yamada, Tomoyuki Shiratsuchi, Yuichi Aihara
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Patent number: 11437643Abstract: An all-solid-state secondary battery including: a positive electrode active material layer including a positive electrode active material and a sacrificial positive electrode material having an oxidation-reduction potential which is less than a discharge voltage of the positive electrode active material; and a negative electrode active material layer including a negative electrode active material including an element alloyable with lithium or that forms a compound with lithium; and a solid electrolyte layer between the positive electrode active material layer and the negative electrode active material layer, wherein the sacrificial positive electrode material includes a sacrificial active material and a conductive agent.Type: GrantFiled: February 20, 2019Date of Patent: September 6, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Nobuyoshi Yashiro, Seitaro Ito, Tomoyuki Shiratsuchi, Yuichi Aihara
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Patent number: 11217785Abstract: A composite cathode active material including: a core particle; a first coating layer; and a second coating layer; wherein the core particle includes a cathode active material, the first and second coating layers cover a surface of the core particle, the first coating layer includes a first lithium-containing compound, wherein the first lithium-containing compound includes zirconium, niobium, titanium, aluminum, or a combination thereof, the second coating layer includes a second lithium-containing compound, wherein the second lithium-containing compound includes germanium, niobium, gallium, or a combination thereof, and the first lithium-containing compound is different from the second lithium-containing compound.Type: GrantFiled: January 15, 2018Date of Patent: January 4, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seitaro Ito, Tomoyuki Shiratsuchi, Yuichi Aihara, Tomoyuki Tsujimura
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Patent number: 11022653Abstract: A deterioration degree estimation device includes an internal resistance detection unit, a deterioration management unit and a deterioration degree estimation unit. The internal resistance detection unit detects an internal resistance of a battery. The deterioration management unit manages a cycle deterioration of the battery. The deterioration degree estimation unit estimates a deterioration degree of the battery as an estimated deterioration degree based on an increase rate of the internal resistance. The deterioration degree estimation unit estimates the estimated deterioration degree such that the estimated deterioration degree decreases as the cycle deterioration increases, or such that the estimated deterioration degree increases as the cycle deterioration degree decreases.Type: GrantFiled: August 26, 2015Date of Patent: June 1, 2021Assignee: Nissan Motor Co., Ltd.Inventors: Hironobu Shimosawa, Kenichi Sakai, Kenji Hosaka, Tomoyuki Shiratsuchi
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Publication number: 20210083252Abstract: An all-solid secondary battery including: a cathode including a cathode active material layer; an anode including an anode active material layer; and a solid electrolyte layer including a sulfide solid electrolyte between the cathode active material layer and the anode active material layer, wherein an arithmetic mean roughness (Ra) of an interface between the cathode active material layer and the solid electrolyte layer is about 1 micrometer or less, and a relative density of the solid electrolyte layer is about 80% or more.Type: ApplicationFiled: December 1, 2020Publication date: March 18, 2021Inventors: Satoshi FUJIKI, Takanobu YAMADA, Tomoyuki SHIRATSUCHI, Yuichi AIHARA
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Patent number: 10886515Abstract: An all-solid secondary battery including: a cathode including a cathode active material layer; an anode including an anode active material layer; and a solid electrolyte layer including a sulfide solid electrolyte between the cathode active material layer and the anode active material layer, wherein an arithmetic mean roughness (Ra) of an interface between the cathode active material layer and the solid electrolyte layer is about 1 micrometer or less, and a relative density of the solid electrolyte layer is about 80% or more.Type: GrantFiled: May 29, 2018Date of Patent: January 5, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Satoshi Fujiki, Takanobu Yamada, Tomoyuki Shiratsuchi, Yuichi Aihara
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Patent number: 10497933Abstract: A cathode active material including a first composite oxide represented by Formula (1): xV2O5.Li3PO4??(1) wherein, in Formula 1, x satisfies 2<x?10.Type: GrantFiled: March 22, 2017Date of Patent: December 3, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Satoshi Fujiki, Tomoyuki Shiratsuchi, Yuichi Aihara
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Publication number: 20190260065Abstract: An all-solid-state secondary battery including: a positive electrode active material layer including a positive electrode active material and a sacrificial positive electrode material having an oxidation-reduction potential which is less than a discharge voltage of the positive electrode active material; and a negative electrode active material layer including a negative electrode active material including an element alloyable with lithium or that forms a compound with lithium; and a solid electrolyte layer between the positive electrode active material layer and the negative electrode active material layer, wherein the sacrificial positive electrode material includes a sacrificial active material and a conductive agent.Type: ApplicationFiled: February 20, 2019Publication date: August 22, 2019Inventors: Nobuyoshi YASHIRO, Seitaro ITO, Tomoyuki SHIRATSUCHI, Yuichi AIHARA
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Publication number: 20180351159Abstract: An all-solid secondary battery including: a cathode including a cathode active material layer; an anode including an anode active material layer; and a solid electrolyte layer including a sulfide solid electrolyte between the cathode active material layer and the anode active material layer, wherein an arithmetic mean roughness (Ra) of an interface between the cathode active material layer and the solid electrolyte layer is about 1 micrometer or less, and a relative density of the solid electrolyte layer is about 80% or more.Type: ApplicationFiled: May 29, 2018Publication date: December 6, 2018Inventors: Satoshi FUJIKI, Takanobu YAMADA, Tomoyuki SHIRATSUCHI, Yuichi AIHARA
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Publication number: 20180246174Abstract: A deterioration degree estimation device includes an internal resistance detection unit, a deterioration management unit and a deterioration degree estimation unit. The internal resistance detection unit detects an internal resistance of a battery. The deterioration management unit manages a cycle deterioration of the battery. The deterioration degree estimation unit estimates a deterioration degree of the battery as an estimated deterioration degree based on an increase rate of the internal resistance. The deterioration degree estimation unit estimates the estimated deterioration degree such that the estimated deterioration degree decreases as the cycle deterioration increases, or such that the estimated deterioration degree increases as the cycle deterioration degree decreases.Type: ApplicationFiled: August 26, 2015Publication date: August 30, 2018Inventors: Hironobu SHIMOSAWA, Kenichi SAKAI, Kenji HOSAKA, Tomoyuki SHIRATSUCHI
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Publication number: 20180212233Abstract: A composite cathode active material including: a core particle; a first coating layer; and a second coating layer; wherein the core particle includes a cathode active material, the first and second coating layers cover a surface of the core particle, the first coating layer includes a first lithium-containing compound, wherein the first lithium-containing compound includes zirconium, niobium, titanium, aluminum, or a combination thereof, the second coating layer includes a second lithium-containing compound, wherein the second lithium-containing compound includes germanium, niobium, gallium, or a combination thereof, and the first lithium-containing compound is different from the second lithium-containing compound.Type: ApplicationFiled: January 15, 2018Publication date: July 26, 2018Inventors: Seitaro ITO, Tomoyuki SHIRATSUCHI, Yuichi AIHARA, Tomoyuki TSUJIMURA
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Publication number: 20180090752Abstract: A cathode active material including a first composite oxide represented by Formula (1): xV2O5.Li3PO4??(1) wherein, in Formula 1, x satisfies 2<x?10.Type: ApplicationFiled: March 22, 2017Publication date: March 29, 2018Inventors: Satoshi FUJIKI, Tomoyuki SHIRATSUCHI, Yuichi AIHARA
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Patent number: 9786951Abstract: Batteries and battery packs are provided. In one embodiment, the battery includes a positive electrode, a negative electrode, and an electrolyte including a fluidic electrolyte and a non-fluidic electrolyte. The fluidic electrolyte is configured to be imaged as a void image in a secondary electron image and a reflection electron image obtained by energy dispersive X-ray spectroscopy, and the non-fluidic electrolyte is configured to be imaged in the secondary electron image and the reflection electron image with a non-fluidic electrolyte contrast different from a contrast associated with a member selected from the group consisting of a solid current collector, an active material, a conductive material, a binding material and a separator.Type: GrantFiled: March 10, 2015Date of Patent: October 10, 2017Assignee: Sony CorporationInventors: Ichiro Yamada, Tomoyuki Shiratsuchi, Toru Odani
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Patent number: 9246190Abstract: A battery and a battery pack that includes the battery are provided. The battery includes a positive electrode including a positive electrode active material and a first current collector; a negative electrode including a negative electrode active material and a second current collector; a separator; a fluidic electrolyte; and a polymer layer including a polymeric material; wherein at least a portion of the polymer layer is provided between the separator and at least one of the positive electrode active material and the negative electrode active material; and wherein the fluidic electrolyte is provided in at least a void portion adjacent to at least one of the first current collector and the second current collector.Type: GrantFiled: July 29, 2015Date of Patent: January 26, 2016Assignee: Sony CorporationInventors: Ichiro Yamada, Tomoyuki Shiratsuchi, Toru Odani
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Publication number: 20150333369Abstract: A battery and a battery pack that includes the battery are provided. The battery includes a positive electrode including a positive electrode active material and a first current collector; a negative electrode including a negative electrode active material and a second current collector; a separator; a fluidic electrolyte; and a polymer layer including a polymeric material; wherein at least a portion of the polymer layer is provided between the separator and at least one of the positive electrode active material and the negative electrode active material; and wherein the fluidic electrolyte is provided in at least a void portion adjacent to at least one of the first current collector and the second current collector.Type: ApplicationFiled: July 29, 2015Publication date: November 19, 2015Inventors: Ichiro YAMADA, Tomoyuki SHIRATSUCHI, Toru ODANI
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Publication number: 20150188190Abstract: Batteries and battery packs are provided. In one embodiment, the battery includes a positive electrode, a negative electrode, and an electrolyte including a fluidic electrolyte and a non-fluidic electrolyte. The fluidic electrolyte is configured to be imaged as a void image in a secondary electron image and a reflection electron image obtained by energy dispersive X-ray spectroscopy, and the non-fluidic electrolyte is configured to be imaged in the secondary electron image and the reflection electron image with a non-fluidic electrolyte contrast different from a contrast associated with a member selected from the group consisting of a solid current collector, an active material, a conductive material, a binding material and a separator.Type: ApplicationFiled: March 10, 2015Publication date: July 2, 2015Inventors: Ichiro YAMADA, Tomoyuki SHIRATSUCHI, Toru ODANI
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Patent number: 8986893Abstract: Disclosed is a battery including: a positive electrode; a negative electrode; and an electrolyte including a fluidic electrolyte in which an electrolytic solution containing a solvent and an electrolyte salt is present while maintaining fluidity, and a non-fluidic electrolyte in which an electrolytic solution containing a solvent and an electrolyte salt is supported by a polymeric material.Type: GrantFiled: January 23, 2013Date of Patent: March 24, 2015Assignee: Sony CorporationInventors: Ichiro Yamada, Tomoyuki Shiratsuchi, Toru Odani
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Patent number: 8940439Abstract: A secondary battery capable of suppressing resistance rise even after repeated charge and discharge is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode contains titanium-containing lithium composite as an anode active material, and the electrolytic solution contains cyclic disulfonic acid anhydride.Type: GrantFiled: March 15, 2012Date of Patent: January 27, 2015Assignee: Sony CorporationInventors: Atsumichi Kawashima, Hiroshi Imoto, Tomoyuki Shiratsuchi, Takuma Sakamoto, Naoto Ueda, Atsushi Nishimoto, Tadahiko Kubota, Masayuki Ihara
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Patent number: 8865349Abstract: The present invention provides a positive electrode active material that has rate characteristics suitable for nonaqueous electrolyte batteries and particularly nonaqueous electrolyte secondary batteries, a method by which this positive electrode active material can be easily mass produced, and a high-performance nonaqueous electrolyte battery that has a positive electrode active material obtained by this method. The present invention relates to a method of producing a positive electrode active material, the method comprising a step of mixing a carbon source with lithium manganese phosphate LiMnPO4 or a compound LiMn1-xMxPO4 (where, 0?x<1 and M is at least one metal element selected from the group consisting of Co, Ni, Fe, Zn, Cu, Ti, Sn, Zr, V, and Al) containing lithium manganese phosphate LiMnPO4 as a solid solution composition, and heat treating the obtained mixture under an inert gas atmosphere.Type: GrantFiled: September 20, 2006Date of Patent: October 21, 2014Assignees: Kanto Denka Kogyo Co., Ltd., Kyushu University, National University CorporationInventors: Shigeto Okada, Tomoyuki Shiratsuchi, Tomoko Iwanaga, Jun-ichi Yamaki, Shinji Iizuka, Osamu Omae, Kumiko Sueto, Takeshi Shimada
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Publication number: 20120244410Abstract: A secondary battery capable of suppressing resistance rise even after repeated charge and discharge is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode contains titanium-containing lithium composite as an anode active material, and the electrolytic solution contains cyclic disulfonic acid anhydride.Type: ApplicationFiled: March 15, 2012Publication date: September 27, 2012Applicant: SONY CORPORATIONInventors: Atsumichi Kawashima, Hiroshi Imoto, Tomoyuki Shiratsuchi, Takuma Sakamoto, Naoto Ueda, Atsushi Nishimoto, Tadahiko Kubota, Masayuki Ihara