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1.发明公开公开(公告)号：US20240327237A1
公开(公告)日：2024-10-03
申请号：US18595444
申请日：2024-03-05
发明人： Kazumasa SAKATSUME , Yoshiyuki MORITA , Yoshiya FUJIWARA , Akihisa TANAKA , Kazuki CHIBA , Takashi HAKARI , Junji AKIMOTO , Kunimitsu KATAOKA
CPC分类号： C01G45/12 , H01M4/505 , C01P2002/72 , C01P2006/40
摘要： The invention provides a secondary battery positive electrode active material including an oxide containing Li, Mn, and Ti, wherein the oxide has a Li content of 43 to 60 mol %, a Mn content of 22 to 35 mol %, and a Ti content of 7 to 29 mol %, the oxide has an X-ray diffraction pattern that is measured using CuKα as an X-ray source and has a maximum X-ray diffraction peak exhibiting the highest peak intensity and existing at an angle in the range of 43 to 45 degrees, the oxide satisfies the formula 0.70
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公开(公告)号：US20170365847A1
公开(公告)日：2017-12-21
申请号：US15502452
申请日：2015-08-06
发明人： Kunimitsu KATAOKA , Junji AKIMOTO
IPC分类号： H01M4/485 , H01M10/054 , H01M10/0525
CPC分类号： H01M4/485 , C01G23/005 , C01P2002/72 , C01P2002/77 , H01M10/0525 , H01M10/054 , Y02P70/54
摘要： Provided are a sodium ion secondary battery and a lithium ion secondary battery capable of undergoing a reversible large-capacity charge/discharge reaction. The sodium and lithium ion secondary batteries each have a positive electrode, a negative electrode, and an electrolyte. The active substance of the positive or negative electrode of these secondary batteries is a single-phase polycrystal represented by the following chemical formula: NaxTi4O9 (2≦x≦3), preferably Na2Ti4O9, having a one-dimensional tunnel type structure, and belonging to a monoclinic crystal system. This polycrystal is obtained by filling a container made of molybdenum or the like with a raw material containing a sodium compound and at least one of a titanium compound and metal titanium, and firing at 800° C. or more but 1600° C. or less.
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3.发明申请公开(公告)号：US20170222258A1
公开(公告)日：2017-08-03
申请号：US15329750
申请日：2015-07-30
发明人： Kunimitsu KATAOKA , Junji AKIMOTO
IPC分类号： H01M10/0562 , H01M10/0525 , C01G25/00
摘要： Provided is a high-density lithium-containing garnet crystal body. The lithium-containing garnet crystal body has a relative density of 99% or more, belongs to a tetragonal system, and has a garnet-related type structure. A method of producing a Li7La3Zr2O12 crystal, which is one example of this lithium-containing garnet crystal body, includes melting a portion of a rod-like raw material composed of polycrystalline Li7La3Zr2O12 belonging to a tetragonal system while rotating it on a plane perpendicular to the longer direction and moving the melted portion in the longer direction. The moving rate of the melted portion is preferably 8 mm/h or more but not more than 19 mm/h. The rotational speed of the raw material is preferably 30 rpm or more but not more than 60 rpm. By increasing the moving rate of the melted portion, decomposition of the raw material due to evaporation of lithium can be prevented and by increasing the rotational speed of the raw material, air bubbles can be removed.
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公开(公告)号：US20230378527A1
公开(公告)日：2023-11-23
申请号：US18247952
申请日：2021-08-30
IPC分类号： H01M10/0562 , H01M10/0525
CPC分类号： H01M10/0562 , H01M10/0525 , H01M2300/0077
摘要： Provided is a complex oxide having high density and high lithium ion conductivity and low activation energy. The complex oxide has a chemical composition represented by Li4−xSr2−xLaxZrO6 (0≤x≤1.0) and belongs to a monoclinic space group P21/n. The relative density of this complex oxide can be made to be 100%. The lithium ion conductivity of this complex oxide can be made to be 6.0×10−4 S/cm or more. This complex oxide is produced by melting at least a part of a raw material having a chemical composition represented by Li(4−x)ySr(2−x)zLaxZrO6 (0≤x≤1.0, 1
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公开(公告)号：US20180282174A1
公开(公告)日：2018-10-04
申请号：US15753910
申请日：2016-08-19
发明人： Junji AKIMOTO , Naoki HAMAO , Kunimitsu KATAOKA
摘要： Provided is a complex oxide that has a high hydrogen content, contains almost no impurity phase, and is suitable for proton conductivity. The complex oxide is represented by a chemical formula Li7-xHxLa3M2O12 (M represents Zr and/or Hf, and 3.2
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6.发明申请TITANATE COMPOUND, ALKALI METAL TITANATE COMPOUND AND METHOD FOR PRODUCING SAME, AND POWER STORAGE DEVICE USING TITANATE COMPOUND AND ALKALI METAL TITANATE COMPOUND AS ACTIVE MATERIAL 审中-公开钛酸盐化合物，碱金属钛酸盐化合物及其生产方法，以及使用钛酸盐化合物和碱金属钛酸盐化合物作为活性材料的电力存储装置公开(公告)号：US20160344025A1
公开(公告)日：2016-11-24
申请号：US15112632
申请日：2015-01-23
申请人： NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY , ISHIHARA SANGYO KAISHA, LTD.
CPC分类号： H01M4/485 , C01G23/005 , C01G23/04 , C01P2002/72 , C01P2002/74 , C01P2004/03 , C01P2004/54 , C01P2004/62 , C01P2006/12 , C01P2006/40 , C01P2006/80 , H01M4/131 , H01M10/052 , Y02E60/13
摘要： Provided is a titanate compound capable of further increasing the capacity of a power storage device when used as an electrode active material thereof. The titanate compound according to the present invention includes at least 60%, based on the number thereof, of particles having an anisotropic shape and a specific surface area of 10-30 m2/g as measured by a nitrogen adsorption BET one-point method, and having a long-axis diameter (L) in the range of 0.1
摘要翻译： 提供一种当用作电极活性材料时能够进一步提高蓄电装置的容量的钛酸酯化合物。 根据本发明的钛酸酯化合物，通过氮吸附BET一点法测定，其数量为至少60％，其具有各向异性形状的颗粒和比表面积为10-30m 2 / g， 并且通过电子显微镜测量的长轴直径（L）在0.1
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7.发明申请公开(公告)号：US20220320578A1
公开(公告)日：2022-10-06
申请号：US17642210
申请日：2020-06-26
发明人： Kunimitsu KATAOKA , Junji AKIMOTO , Yuso ISHIDA , Tomoki ARIGA
IPC分类号： H01M10/0562 , H01M10/0525 , C30B13/28 , C30B15/20 , C30B29/28 , C01G25/00
摘要： Provided is a novel solid electrolyte material of high density and high ionic conductivity, and an all-solid-state lithium ion secondary battery that utilizes the solid electrolyte material. The solid electrolyte material has a chemical composition represented by Li7-3xGaxLa3Zr2O12 (0.08≤x
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公开(公告)号：US20190341651A1
公开(公告)日：2019-11-07
申请号：US15776229
申请日：2016-12-26
IPC分类号： H01M10/0562 , C01G35/00 , C01G33/00 , H01M10/0525
摘要： There are provided a solid electrolyte material having high density and ion conductivity, and an all solid lithium ion secondary battery using the solid electrolyte material. The solid electrolyte material has a garnet-related structure which has a chemical composition represented by Li7-x-yLa3Zr2-x-yTaxNbyO12 (0≤x≤0.8, 0.2≤y≤1, and 0.2≤x+y≤1) and relative density of 99% or greater, and belongs to a cubic system. The solid electrolyte material has lithium ion conductivity which is equal to or greater than 1.0×10−3 S/cm. The solid electrolyte material has a lattice constant a which satisfies 1.28 nm≤a≤1.30 nm, and has a lithium ion which occupies only two or more 96h sites in a crystal structure. The all solid lithium ion secondary battery includes a positive electrode, a negative electrode, and a solid electrolyte. The solid electrolyte includes the solid electrolyte material.
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9.发明申请ALKALI METAL TITANIUM OXIDE HAVING ANISOTROPIC STRUCTURE, TITANIUM OXIDE, ELECTRODE ACTIVE MATERIAL CONTAINING SAID OXIDES, AND ELECTRICITY STORAGE DEVICE 审中-公开具有异相结构，氧化钛，含有氧化物的电极活性材料的ALKALI金属氧化钛和电力存储装置公开(公告)号：US20160190574A1
公开(公告)日：2016-06-30
申请号：US14910754
申请日：2014-08-14
申请人： NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY , ISHIHARA SANGYO KAISHA, LTD.
发明人： Hideaki NAGAI , Junji AKIMOTO , Kunimitsu KATAOKA , Yoshimasa KUMASHIRO , Tomoyuki SOTOKAWA , Nobuharu KOSHIBA
IPC分类号： H01M4/485 , C01G23/04 , H01M10/0525 , C01G23/00
CPC分类号： H01M4/485 , C01G23/00 , C01G23/005 , C01G23/04 , C01G23/047 , C01P2002/70 , C01P2002/72 , C01P2004/03 , C01P2004/32 , C01P2004/50 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/40 , H01G11/10 , H01G11/46 , H01G11/50 , H01M10/0525 , H01M2220/20 , H01M2220/30 , Y02E60/13 , Y02T10/7022
摘要： Provided are an alkali metal titanium oxide and titanium oxide that have a novel form and are industrially advantageous. The alkali metal titanium oxide is obtained by firing the result of impregnating the surface and interior of pores of porous titanium compound particles with an aqueous solution of an alkali metal-containing component, and has the form of secondary particles resulting from the aggregation of primary particles having an anisotropic structure. The titanium oxide is obtained using the alkali metal titanium oxide as a starting material. The secondary particles can further assume a clumped structure, have a suitable size, and are easily handled, and so are industrially advantageous. In particular, the H2Ti12O25 of the present invention is an electrode material that is for a lithium secondary battery, has a high capacity and a superior initial charging/discharging rate and cycling characteristics, and has an extremely high practical value.
摘要翻译： 提供具有新颖形式并且在工业上有利的碱金属氧化钛和氧化钛。 通过用含碱金属成分的水溶液浸渍多孔钛化合物颗粒的孔表面和内部的结果，得到碱金属氧化钛，并且具有由一次粒子聚集形成的二次粒子的形式 具有各向异性结构。 使用碱金属氧化钛作为起始原料得到氧化钛。 次级颗粒可以进一步呈现结块结构，具有合适的尺寸，并且易于处理，在工业上也是有利的。 特别地，本发明的H2Ti12O25是锂二次电池的电极材料，具有高容量，优异的初始充放电率和循环特性，具有极高的实用价值。
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10.发明申请公开(公告)号：US20200303771A1
公开(公告)日：2020-09-24
申请号：US16897119
申请日：2020-06-09
发明人： Kunimitsu KATAOKA , Junji AKIMOTO
IPC分类号： H01M10/0562 , H01M10/0525 , C01G25/00 , H01B1/08 , C01G35/00 , H01B1/12 , H01M10/0585
摘要： To provide a lithium ion conductive crystal body having a high density and a large length and an all-solid state lithium ion secondary battery containing the lithium ion conductive crystal body. A Li5La3Ta2O12 crystal body, which is one example of the lithium ion conductive crystal body, has a relative density of 99% or more, belongs to a cubic system, has a garnet-related type structure, and has a length of 2 cm or more. The Li5La3Ta2O12 crystal body is grown by a melting method employing a Li5La3Ta2O12 polycrystal body as a raw material. With the growing method, a Li5La3Ta2O12 crystal body having a relative density of 100% can also be obtained. In addition, the all-solid state lithium ion secondary battery has a positive electrode, a negative electrode, and a solid electrolyte, in which the solid electrolyte contains the lithium ion conductive crystal body.
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