公开(公告)号：US20190280299A1

公开(公告)日：2019-09-12

申请号：US16463789

申请日：2017-11-20

Applicant: Tokyo University of Science Foundation

Inventor： Shinichi KOMABA ,  Kei KUBOTA ,  Kuniko CHIHARA ,  Akihiro KATOGI

IPC: H01M4/58 ,  H01M10/054 ,  C01G31/00

Abstract: Provided is the positive electrode active material for a potassium ion battery according to the embodiment comprises a compound represented by Formula (1), in which M represents at least one element selected from the group consisting of V, Fe, Co, Ni, and Mn, and x represents a number from 0 to 1; and is a positive electrode for a potassium ion battery comprising the positive electrode active material for a potassium ion battery according to the embodiment, or a potassium ion battery comprising the positive electrode for a potassium ion battery. KMOxPO4F1-x  [Formula (1)]

公开(公告)号：US20250130197A1

公开(公告)日：2025-04-24

申请号：US18684966

申请日：2022-08-15

Applicant: KOA CORPORATION ,  Tokyo University of Science Foundation

Inventor： Toshiharu TAKAYAMA ,  Takahiro MATSUI ,  Tomoyuki KURIBAYASHI ,  Yuko TAKEI ,  Shinichi KOMABA ,  Ryoichi TATARA ,  Kenta ISHIHARA

IPC: G01N27/333

Abstract: The present invention relates to an all-solid-state ion-selective electrode having an insertion material, and a method of manufacturing such an all-solid-state ion-selective electrode. The all-solid-state potassium ion-selective electrode (1) includes: a conductor (2); an insertion material (10) formed on a surface of the conductor (2); and a potassium ion-sensitive membrane (20) covering the insertion material (10). The insertion material (10) includes at least a Prussian blue analog represented by a structural formula KxFe[Fe(CN)6]y·nH2O, where x is a numerical number larger than 0 and less than or equal to 2, y is a numerical number larger than 0 and less than or equal to 1, and n is a numerical number larger than or equal to 0.

公开(公告)号：US20180166686A1

公开(公告)日：2018-06-14

申请号：US15575462

申请日：2016-05-20

Applicant: Umicore ,  Tokyo University of Science Foundation

Inventor： Shinichi KUMAKURA ,  Shinichi KOMABA ,  Kei KUBOTA ,  Yoshiyuki TAHARA

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/054 ,  H01M10/058 ,  C01G45/12 ,  C01G53/00

Abstract: A sodium transition metal based cathode material for a rechargeable sodium battery, having a P2 orthorhombic layered bronze crystal structure with space group Cmcm, and having a composition NaxMyMn1-yLiy′AzO2 with 0.60 0.

公开(公告)号：US20170294676A1

公开(公告)日：2017-10-12

申请号：US15518104

申请日：2015-09-03

Applicant: TOKYO UNIVERSITY OF SCIENCE FOUNDATION

Inventor： Shinichi KOMABA ,  Kei KUBOTA ,  Mouad DAHBI ,  Tetsuya HASEGAWA

IPC: H01M10/054 ,  H01G11/68 ,  H01M4/62 ,  H01G11/30 ,  H01M4/587 ,  H01M4/66

Abstract: Provided are: a potassium ion secondary battery which is not susceptible to deterioration of charge/discharge capacity even if charging and discharging are repeated, and which has a long service life as a secondary battery; a potassium ion capacitor; a negative electrode for the potassium ion secondary battery; and a negative electrode for the potassium ion capacitor. A negative electrode for potassium ion secondary batteries and a negative electrode for potassium ion capacitors, each of which contains a carbon material that is capable of absorbing and desorbing potassium and a binder that contains a polycarboxylic acid and/or a salt thereof. A potassium ion secondary battery which is provided with the negative electrode or the capacitor. A binder for negative electrodes of potassium ion secondary batteries or negative electrodes of potassium ion capacitors, which contains a polycarboxylic acid and/or a salt thereof.

公开(公告)号：US20230124539A1

公开(公告)日：2023-04-20

申请号：US17909497

申请日：2021-02-25

Applicant: Tokyo University of Science Foundation ,  TOSOH CORPORATION

Inventor： Tatsuo HORIBA ,  Kei KUBOTA ,  Yoshinari ABE ,  Asako OISHI ,  Shinichi KOMABA ,  Hiroshi INOUE ,  Eiichi TOUGOU

IPC: H01M4/62 ,  C08B37/00 ,  C08B11/12

Abstract: The present invention provides a binder for positive electrode of lithium ion battery which is excellent in workability at the time of producing a positive electrode, is excellent in charge and discharge characteristics such as cycle characteristics and rate characteristics, and enables to possible to produce a positive electrode having an extended cycle life, as well as the present invention provides a slurry for forming positive electrode mixture layer of lithium ion battery, a positive electrode for lithium ion battery, and a lithium ion battery, using the same. As a binder for binding a positive electrode active material, a conductive aid and a current collector at a positive electrode of a lithium ion battery, by using one containing a polysaccharide introduced with at least one ion exchange group selected from the group consisting of sulfate groups and alkali metal sulfate groups, it is possible to provide a lithium ion battery with excellent charge and discharge characteristics and an extended cycle life.

公开(公告)号：US20160056461A1

公开(公告)日：2016-02-25

申请号：US14780833

申请日：2014-03-17

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED ,  TOKYO UNIVERSITY OF SCIENCE FOUNDATION

Inventor： Shinichi KOMABA ,  Naoaki YABUUCHI ,  Masaya YANO ,  Satoru KUZE

IPC: H01M4/505 ,  H01M2/16 ,  H01M10/0569 ,  H01M4/525 ,  H01M10/054

CPC classification number: H01M4/505 ,  H01M2/1653 ,  H01M2/1686 ,  H01M4/525 ,  H01M10/054 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2220/10 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0034

Abstract: A positive electrode-active material is provided for use in a positive electrode for a sodium secondary cell and a sodium secondary cell. Also provided is a positive electrode for a sodium secondary cell and a sodium secondary cell having a high energy density. The positive electrode-active material for a sodium secondary cell includes a composite metal oxide, which has an α-NaFeO2 type crystal structure and is denoted by Formula (1) described below: Naa(FewNixMny-zTiz)O2  (1), wherein a is greater than or equal to 0.6 and less than or equal to 1.0, w is greater than 0 and less than 0.5, x is greater than 0 and less than 0.5, y is greater than 0.03 and less than or equal to 0.5, z is greater than or equal to 0.03 and less than 0.5, and w+x+y=1.0, and y>z.

Abstract translation: 提供了用于钠二次电池和钠二次电池的正极中使用的正极活性物质。 还提供了一种钠二次电池用正极和能量密度高的钠二次电池。 钠二次电池用正极活性物质包括具有α-NaFeO 2型晶体结构的复合金属氧化物，由下述式（1）表示：Naa（FewNixMny-zTiz）O 2（1），其中， 大于或等于0.6且小于或等于1.0，w大于0且小于0.5，x大于0且小于0.5，y大于0.03且小于或等于0.5，z为 大于或等于0.03且小于0.5，且w + x + y = 1.0，y> z。

公开(公告)号：US20160013470A1

公开(公告)日：2016-01-14

申请号：US14770536

申请日：2014-02-24

Applicant: UMICORE ,  UMICORE KOREA LTD. ,  TOKYO UNIVERSITY OF SCIENCE FOUNDATION

Inventor： Jens PAULSEN ,  Shinichi KOMABA ,  Ryo HARA ,  Naoaki YABUUCHI ,  Masataka KAJIYAMA

IPC: H01M4/131 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/131 ,  C01G45/1228 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2004/61 ,  H01M4/0445 ,  H01M4/505 ,  H01M4/525 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/028

Abstract: A sodium transition metal cathode material for a rechargeable sodium battery having a P2 layered bronze crystal structure, comprising at least 55 mol % manganese, wherein the manganese valence state is at least 3.75. The material undergoes a structural transformation to a secondary cathode material by extraction of sodium during the 1st charge of a rechargeable sodium battery comprising the sodium cathode material. The material has either a composition NaxMO2 where M=Mn1-y-zLiyAz where z

Abstract translation: 一种具有P2层青铜晶体结构的可再充电钠电池用钠过渡金属阴极材料，其包含至少55mol％的锰，其中锰价态至少为3.75。 在包含钠阴极材料的可再充电钠电池的第一次充电期间，材料通过提取钠而进行到次级正极材料的结构转化。 该材料具有组成NaxMO2，其中M = Mn1-y-zLiyAz其中z <0.2和y <0.33和0.66