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公开(公告)号：US20170237116A1
公开(公告)日：2017-08-17
申请号：US15426695
申请日：2017-02-07
发明人： Yasuhiro SHINDO , Yusuke MIZUNO , Kenichi KAWAKITA , Yasuhiko OHSAWA , Yuki KUSACHI , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE
IPC分类号： H01M10/0525 , H01M4/525 , H01M4/62 , H01M2/02
CPC分类号： H01M4/624 , H01M2/0275 , H01M4/366 , H01M4/66 , H01M10/052 , H01M2004/027 , H01M2004/028 , H01M2220/20 , Y02E60/122
摘要： Provided is a lithium ion cell having a power generation part provided with a single cell obtained by stacking a positive electrode current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode current collector in the order, and an exterior cell container for accommodating the power generation part, in which the positive electrode active material layer is a non-bound material of a positive electrode active material particle, the negative electrode active material layer is a non-bound material of a negative electrode active material particle, and the single cell has flexibility.
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公开(公告)号：US20210408525A1
公开(公告)日：2021-12-30
申请号：US17285682
申请日：2019-10-21
发明人： Ryosuke KUSANO , Yasuhiro TSUDO , Yasuji MARUYAMA , Kazuaki ONISHI , Yasuhiko OHSAWA , Yuki KUSACHI , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE
摘要： The present invention aims to provide a method for producing a pinhole-free thin resin current collector for negative electrodes. The method for producing a sheet-shaped resin current collector for negative electrodes of the present invention includes stacking three or more layers of melts of conductive resin compositions each containing a polyolefin and a conductive filler to obtain a multilayered body, wherein the polyolefin contained in each of the conductive resin compositions that form the respective layers of the multilayered body has a melt mass flow rate of 15 to 70 g/10 min as measured at a temperature of 230° C. and a load of 2.16 kg in accordance with JIS K7210-1:2014.
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公开(公告)号：US20170279125A1
公开(公告)日：2017-09-28
申请号：US15506514
申请日：2015-08-21
发明人： Yasuhiko OHSAWA , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE , Yusuke MIZUNO , Hiroshi FUKUMOTO , Masatoshi OKURA , Yasuhiro SHINDO , Yasuhiro TSUDO
CPC分类号： H01M4/668 , H01M4/02 , H01M4/0404 , H01M4/13 , H01M4/137 , H01M4/139 , H01M4/624 , H01M4/66 , H01M2004/027 , H01M2004/028 , H01M2004/029
摘要： The present invention provides a means for improving the durability of a battery. An electrode of the present invention comprises a current collector having a conductive resin layer comprising a polymer material and a conductive filler, and an active material layer, and the electrode further includes a conductive member, which is in electrical contact with the conductive filler, between the current collector and the active material layer.
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公开(公告)号：US20200058923A1
公开(公告)日：2020-02-20
申请号：US16346707
申请日：2017-11-07
发明人： Kazuya MINAMI , Yusuke NAKASHIMA , Yasuhiko OHSAWA , Yuki KUSACHI , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE
IPC分类号： H01M4/13 , H01M10/0525 , H01M10/0568 , H01M4/66 , H01M4/36
摘要： To provide a negative electrode for a lithium ion battery having high energy density and excellent rapid charging characteristics.A negative electrode for a lithium ion battery, the negative electrode including a negative electrode current collector, a negative electrode active material layer formed on the surface of the negative electrode current collector, and a non-aqueous liquid electrolyte including an electrolyte containing lithium ions and a non-aqueous solvent, in which the negative electrode active material layer includes a negative electrode active material and voids, the voids are filled with the non-aqueous liquid electrolyte, and a proportion of the battery capacity based on a total amount of lithium ions in the non-aqueous liquid electrolyte existing in the negative electrode active material layer with respect to the battery capacity based on a total amount of the negative electrode active material is 3% to 17%.
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15.发明申请公开(公告)号：US20190319254A1
公开(公告)日：2019-10-17
申请号：US16470610
申请日：2017-12-19
发明人： Kazuya TSUCHIDA , Yusuke NAKASHIMA , Yasuhiko OHSAWA , Yuki KUSACHI , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE
IPC分类号： H01M4/04 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/36 , H01M4/38 , H01M4/587 , H01M10/0525
摘要： To provide a negative electrode for a lithium ion battery in which a volume change of a silicon-based negative electrode active material due to charging and discharging is small, and a production method therefor.Provided is a method for producing a negative electrode for a lithium ion battery, the method including a step of forming a coating film on a current collector or a separator by using a slurry containing a negative electrode active material composition, which contains a silicon-based negative electrode active material and a carbon-based negative electrode active material, and a dispersion medium, in which the method further includes a step of doping the silicon-based negative electrode active material with lithium ions and a step of doping the carbon-based negative electrode active material with lithium ions before or after the step of forming the coating film and before assembling a lithium ion battery, and the method does not substantially include a step of drying the coating film.
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16.发明申请公开(公告)号：US20180090762A1
公开(公告)日：2018-03-29
申请号：US15561563
申请日：2016-03-03
发明人： Yusuke MIZUNO , Yasuhiro SHINDO , Yusuke NAKASHIMA , Kenichi KAWAKITA , Yuki KUSACHI , Yasuhiko OHSAWA , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE
IPC分类号： H01M4/62 , H01M10/0525 , H01M4/36 , H01M4/04 , H01M4/139
CPC分类号： H01M4/62 , H01M4/0404 , H01M4/13 , H01M4/139 , H01M4/36 , H01M4/364 , H01M4/366 , H01M10/0525 , H01M2004/021 , H01M2220/20
摘要： The objective of the present invention is to provide an electrode for a lithium ion battery which has excellent electron conductivity even when the thickness of the electrode is increased. The electrode for a lithium ion battery according to the present invention includes a first principal surface located on a separator side of the lithium ion battery, and a second principal surface located on a current collector side, wherein the electrode has a thickness of 50 to 5000 μm, and the electrode includes, between the first principal surface and the second principal surface, short fibers (A) having an average fiber length of 50 nm or more and less than 100 μm, long fibers (B) having an average fiber length of 100 μm or more and 1000 μm or less, and active material particles (C), and the short fibers (A) and the long fibers (B) are electroconductive fibers.
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公开(公告)号：US20170279113A1
公开(公告)日：2017-09-28
申请号：US15505729
申请日：2015-08-21
发明人： Yasuhiko OHSAWA , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE , Yusuke MIZUNO , Hiroshi FUKUMOTO , Masatoshi OKURA , Yasuhiro SHINDO , Yasuhiro TSUDO
IPC分类号： H01M4/139 , H01M4/62 , H01M2/16 , H01M10/0525 , H01M10/058 , H01M4/66 , H01M4/04
CPC分类号： H01M4/139 , H01M2/1606 , H01M2/168 , H01M2/204 , H01M2/22 , H01M4/0404 , H01M4/62 , H01M4/66 , H01M4/661 , H01M4/667 , H01M4/668 , H01M10/04 , H01M10/0525 , H01M10/058
摘要： The present invention relates to a laminate type battery including: a power generating element formed by electrically laminating in series a plurality of single battery layers in which the single battery layer is formed by sequentially laminating a positive electrode current collector, a positive electrode active material layer, an electrolyte layer, a negative electrode active material layer, and a negative electrode current collector; and an outer casing body inside which the power generating element is disposed, in which at least one of the positive electrode current collector and the negative electrode current collector includes a resin layer having conductivity, and the power generating element further includes a resistance reduction layer adjacent to the resin layer at the outer surface side of the single battery layer including the resin layer. According to the present invention, a means for improving output characteristics in a laminate type secondary battery using a resin current collector is provided.
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公开(公告)号：US20200091508A1
公开(公告)日：2020-03-19
申请号：US16495474
申请日：2018-03-26
发明人： Yasuhiko OHSAWA , Yuki KUSACHI , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE , Naofumi SHOJI
IPC分类号： H01M4/38 , H01M4/36 , H01M4/48 , H01M10/0525
摘要： To provide a non-aqueous electrolyte secondary battery negative electrode material that can be produced even without performing a heat treatment at a high temperature such as 2,000° C. or higher and can have the discharge capacity further increased.The non-aqueous electrolyte secondary battery negative electrode material according to the invention has a core portion including carbonaceous negative electrode active material particles; and a shell portion including a polyimide and silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles. There is a feature that the value of the ratio of the volume average particle size (D50) of the silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles with respect to the volume average particle size (D50) of the carbonaceous negative electrode active material particles is 0.001 to 0.1, and the content of the silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles with respect to 100% by mass of the content of the carbonaceous negative electrode active material particles is 2% to 20% by mass.
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公开(公告)号：US20190267610A1
公开(公告)日：2019-08-29
申请号：US16346337
申请日：2017-11-07
发明人： Kazuya MINAMI , Yusuke NAKASHIMA , Yasuhiko OHSAWA , Yuki KUSACHI , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE
IPC分类号： H01M4/13 , H01M10/0525 , H01M10/0568 , H01M4/66 , H01M4/36 , H01M4/62
摘要： To provide a positive electrode for a lithium ion battery having high energy density and being capable of rapid discharging.A positive electrode for a lithium ion battery, the positive electrode including a positive electrode current collector, a positive electrode active material layer formed on the surface of the positive electrode current collector, and a non-aqueous liquid electrolyte including an electrolyte containing lithium ions and a non-aqueous solvent, in which the positive electrode active material layer includes a positive electrode active material and voids, the voids are filled with the non-aqueous liquid electrolyte, and a proportion of the battery capacity based on a total amount of lithium ions in the non-aqueous liquid electrolyte existing in the positive electrode active material layer with respect to the battery capacity based on a total amount of the positive electrode active material is 3.5 to 15%.
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公开(公告)号：US20190067680A1
公开(公告)日：2019-02-28
申请号：US16079392
申请日：2017-02-14
发明人： Yasuhiko OHSAWA , Yuki KUSACHI , Hajime SATOU , Hiroshi AKAMA , Hideaki HORIE , Naofumi SHOJI , Masatoshi OKURA
IPC分类号： H01M4/139 , H01M4/66 , H01M4/62 , H01M10/0525 , H01M4/04
摘要： To provide an electrode for a lithium ion secondary battery capable of enhancing a charge and discharge cycle durability of an electrode that uses a resin current collector. An electrode for a lithium ion secondary battery provided with a resin current collector including a polyolefin resin matrix and a conductive filler A, and an electrode active material layer provided on the resin current collector, in which a crosslinked resin thin-film layer, which contains an Ni filler as a conductive filler B that does not alloy with Li and which has impermeability to the electrolyte solution, is arranged between the resin current collector and a negative electrode active material layer.
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