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1.发明授权公开(公告)号：US11056678B2
公开(公告)日：2021-07-06
申请号：US16384086
申请日：2019-04-15
发明人： Nobuhiro Inoue , Sachiko Kataniwa , Kazutaka Kuriki , Junpei Momo
IPC分类号： H01M4/02 , H01M4/04 , H01G11/28 , H01M4/62 , H01G11/50 , H01G11/84 , H01M4/133 , H01M4/583 , H01M10/0525
摘要： An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor: thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering part of the negative electrode active material. The film has an insulating property and lithium ion conductivity.
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公开(公告)号：US10593940B2
公开(公告)日：2020-03-17
申请号：US16025109
申请日：2018-07-02
发明人： Kiyofumi Ogino , Yumiko Yoneda , Rika Yatabe , Nobuhiro Inoue
摘要： A power storage device having high capacitance is provided. A power storage device with excellent cycle characteristics is provided. A power storage device with high charge and discharge efficiency is provided. A power storage device including a negative electrode with low resistance is provided. A negative electrode for the power storage device includes a current collector and an active material layer including a plurality of active material particles over the current collector. The active material particle is silicon, and the size of the silicon particle is greater than or equal to 0.001 μm and less than or equal to 7 μm.
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公开(公告)号：US10541409B2
公开(公告)日：2020-01-21
申请号：US15907317
申请日：2018-02-28
发明人： Nobuhiro Inoue , Kai Kimura , Sachiko Kataniwa , Ryota Tajima
IPC分类号： H01M4/00 , H01M4/131 , H01G11/68 , H01M4/62 , H01M4/1393 , H01M4/133 , H01M4/36 , H01G11/06 , H01G11/28 , H01G11/50 , H01G11/46 , H01G11/58 , H01M4/134 , H01M4/38 , H01M4/485 , H01G11/66 , H01M4/48 , H01M10/0525 , H01M4/02
摘要： A decomposition reaction of an electrolyte solution and the like caused as a side reaction of charge and discharge is minimized in repeated charge and discharge of a lithium ion battery or a lithium ion capacitor, and thus the lithium ion battery or the lithium ion capacitor can have long-term cycle performance. A negative electrode for a power storage device includes a negative electrode current collector and a negative electrode active material layer which includes a plurality of particles of a negative electrode active material. Each of the particles of the negative electrode active material has an inorganic compound film containing a first inorganic compound on part of its surface. The negative electrode active material layer has a film in contact with an exposed part of the negative electrode active material and part of the inorganic compound film. The film contains an organic compound and a second inorganic compound.
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4.发明授权公开(公告)号：US09384904B2
公开(公告)日：2016-07-05
申请号：US13792598
申请日：2013-03-11
发明人： Nobuhiro Inoue , Sachiko Kataniwa , Kazutaka Kuriki , Junpei Momo
CPC分类号： H01M4/0404 , H01G11/28 , H01G11/50 , H01G11/84 , H01M4/0471 , H01M4/133 , H01M4/583 , H01M4/623 , H01M4/628 , H01M10/0525 , H01M2004/027 , Y02E60/13 , Y02T10/7022
摘要： An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor; thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering part of the negative electrode active material. The film has an insulating property and lithium ion conductivity.
摘要翻译： 目的是抑制锂离子电池或锂离子电容器中的负极处的电解质溶液等的电化学分解， 因此，不可逆容量降低，循环性能提高，或者工作温度范围延长。 一种蓄电装置用负极，其具备负极集电体和负极活性物质层，该负极活性物质层包含负极活性物质的多个粒子，负极活性物质的负极 电极活性物质。 该膜具有绝缘性和锂离子电导率。
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5.发明申请公开(公告)号：US20130283603A1
公开(公告)日：2013-10-31
申请号：US13923428
申请日：2013-06-21
发明人： Takuya MIWA , Kuniharu Nomoto , Nobuhiro Inoue
CPC分类号： H01G9/042 , B82Y30/00 , H01M4/5825 , H01M4/622 , H01M4/625 , H01M10/04 , Y10T29/417 , Y10T29/49115
摘要： At least one of an aqueous solution A containing lithium, an aqueous solution B containing iron, manganese, cobalt, or nickel, and an aqueous solution C containing a phosphoric acid includes graphene oxide. The aqueous solution A is dripped into the aqueous solution C, so that a mixed solution E including a precipitate D is prepared. The mixed solution E is dripped into the aqueous solution B, so that a mixed solution G including a precipitate F is prepared. The mixed solution G is subjected to heat treatment in a pressurized atmosphere, so that a mixed solution H is prepared, and the mixed solution H is then filtered. Thus, particles of a compound containing lithium and oxygen which have a small size are obtained.
摘要翻译： 含有锂的水溶液A，含有铁，锰，钴或镍的水溶液B和含有磷酸的水溶液C中的至少一种包括氧化石墨烯。 将水溶液A滴入水溶液C中，制备包含析出物D的混合溶液E。 将混合溶液E滴加到水溶液B中，从而制备包含沉淀物F的混合溶液G. 混合溶液G在加压气氛中进行热处理，制备混合溶液H，然后过滤混合溶液H. 因此，获得了具有小尺寸的含有锂和氧的化合物的颗粒。
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公开(公告)号：US12074272B2
公开(公告)日：2024-08-27
申请号：US17736687
申请日：2022-05-04
CPC分类号： H01M10/0525 , H01M4/13 , H01M4/136 , H01M4/362 , H01M4/5825 , H01M4/665 , H01M4/668 , C30B1/00 , H01M2004/021 , H01M2004/028 , Y02E60/10 , Y02P70/50
摘要： A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte provided between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer over the positive electrode current collector. The positive electrode active material layer includes a plurality of lithium-containing composite oxides each of which is expressed by LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) that is a general formula. The lithium-containing composite oxide is a flat single crystal particle in which the length in the b-axis direction is shorter than each of the lengths in the a-axis direction and the c-axis direction. The lithium-containing composite oxide is provided over the positive electrode current collector so that the b-axis of the single crystal particle intersects with the surface of the positive electrode current collector.
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公开(公告)号：US11335945B2
公开(公告)日：2022-05-17
申请号：US16791328
申请日：2020-02-14
摘要： A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte provided between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer over the positive electrode current collector. The positive electrode active material layer includes a plurality of lithium-containing composite oxides each of which is expressed by LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) that is a general formula. The lithium-containing composite oxide is a flat single crystal particle in which the length in the b-axis direction is shorter than each of the lengths in the a-axis direction and the c-axis direction. The lithium-containing composite oxide is provided over the positive electrode current collector so that the b-axis of the single crystal particle intersects with the surface of the positive electrode current collector.
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公开(公告)号：US10388467B2
公开(公告)日：2019-08-20
申请号：US14069408
申请日：2013-11-01
发明人： Kazutaka Kuriki , Ryota Tajima , Nobuhiro Inoue , Junpei Momo
IPC分类号： H01M4/36 , H01G11/42 , H01M4/1393 , H01G11/32 , H01M4/587
摘要： To improve the long-term cycle performance of a lithium-ion battery or a lithium-ion capacitor by minimizing the decomposition reaction of an electrolytic solution and the like as a side reaction of charge and discharge in the repeated charge and discharge cycles of the lithium-ion battery or the lithium-ion capacitor. A current collector and an active material layer over the current collector are included in an electrode for a power storage device. The active material layer includes a plurality of active material particles and silicon oxide. The surface of one of the active material particles has a region that is in contact with one of the other active material particles. The surface of the active material particle except the region is partly or entirely covered with the silicon oxide.
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公开(公告)号：US10230095B2
公开(公告)日：2019-03-12
申请号：US15156524
申请日：2016-05-17
发明人： Kai Kimura , Tatsuya Ikenuma , Nobuhiro Inoue , Teppei Oguni
IPC分类号： H01M4/133 , H01M4/36 , H01M4/587 , H01M4/62 , H01M10/0525 , H01M4/134 , H01M4/38 , H01M10/052 , H01M4/02
摘要： To provide a power storage device with a high capacity. To provide a power storage device with a high energy density. To provide a highly reliable power storage device. To provide a long-life power storage device. To provide an electrode with a high capacity. To provide an electrode with a high energy density. To provide a highly reliable electrode. To provide a long-life electrode. The power storage device includes a first electrode and a second electrode. The first electrode includes a first current collector and a first active material layer. The first active material layer includes a first active material and a first binder. The first active material is graphite. A separation strength F of the first electrode that is measured when the first active material layer is separated from the first current collector after the first electrode is immersed in a solution at a temperature higher than or equal to 20° C. and lower than or equal to 70° C. for longer than or equal to three hours is higher than or equal to 0.05 N/cm and lower than or equal to 5 N/cm per unit width of a sample that is separated.
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公开(公告)号：US10026959B2
公开(公告)日：2018-07-17
申请号：US14714479
申请日：2015-05-18
发明人： Nobuhiro Inoue , Kiyofumi Ogino
IPC分类号： H01M4/13 , H01M4/38 , H01M4/48 , H01M10/0525 , H01G11/50 , H01M4/134 , H01M4/36 , H01M10/052 , H01G11/06 , H01G11/24 , H01M4/02
摘要： A power storage device with high capacity is provided. Alternatively, a power storage device with excellent cycle characteristics is provided. Alternatively, a power storage device with high charge and discharge efficiency is provided. Alternatively, a power storage device with a long lifetime is provided. A negative electrode active material includes a first region and a second region. The first region includes at least one element selected from Si, Mg, Ca, Ga, Al, Ge, Sn, Pb, Sb, Bi, Ag, Zn, Cd, As, Hg, and In. The second region includes oxygen and the same element as the one included in the first region. The crystallite size of the element included in the first region is larger than or equal to 1 nm and smaller than or equal to 10 nm.
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