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公开(公告)号：US10916779B2
公开(公告)日：2021-02-09
申请号：US16135622
申请日：2018-09-19
IPC分类号： H01M4/66 , C08L67/00 , H01B1/22 , H01B1/24 , C08L69/00 , C08F255/02 , C08F255/04 , C08F8/50 , C08L23/06 , C08L23/12 , C08L67/04 , C08K3/08 , C08L51/06 , C08L23/02 , C08F293/00 , H01M10/0525 , H01M10/052
摘要： An object of the present invention is to provide a dispersant for a resin current collector which can uniformly disperse a conductive filler to attain sufficient charge and discharge characteristics without impairing the output power per unit weight of a battery. The present invention provides a dispersant for a resin current collector comprising a polymer having a resin-philic block (A1) and a conductive filler-philic block (A2).
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公开(公告)号：US10547053B2
公开(公告)日：2020-01-28
申请号：US14368578
申请日：2012-11-05
发明人： Manabu Watanabe , Osamu Tanaka , Masao Yoshida
IPC分类号： H01M4/38 , C23C14/14 , C23C14/06 , C22C13/00 , C22C30/04 , C23C14/34 , H01M4/04 , C22C32/00 , C22C1/04 , H01M10/0525
摘要： A negative electrode active material for an electric device includes an alloy containing greater than or equal to 29% by mass of silicon and containing tin, carbon and inevitable impurities as a residue.
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3.发明申请公开(公告)号：US20170352882A1
公开(公告)日：2017-12-07
申请号：US15537324
申请日：2014-12-17
IPC分类号： H01M4/38 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/386 , B22F9/002 , B22F2009/041 , C22C1/0458 , C22C1/0483 , C22C1/0491 , C22C1/1084 , C22C29/18 , H01M4/36 , H01M10/052 , H01M10/0525 , H01M2004/027 , H01M2220/20 , Y02E60/122
摘要： A negative electrode active material for electric device is used which includes a silicon-containing alloy having a structure in which a silicide phase containing a silicide of a transition metal is dispersed in a parent phase containing amorphous or low crystalline silicon as a main component and a predetermined composition and in which a ratio value (B/A) of a diffraction peak intensity B of a silicide of a transition metal in a range of 2θ=37 to 45° to a diffraction peak intensity A of a (111) plane of Si in a range of 2θ=24 to 33° is 0.41 or more in an X-ray diffraction measurement of the silicon-containing alloy using a CuKα1 ray.
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公开(公告)号：US10910632B2
公开(公告)日：2021-02-02
申请号：US16461986
申请日：2016-11-22
发明人： Yuka Aiso , Atsushi Itou , Manabu Watanabe , Naoki Ueda
摘要： A negative electrode for an electric device includes a silicon-containing alloy containing silicon and tin, a carbon cover layer including a carbon material and covering the silicon-containing alloy, and a negative electrode electric conducting additive. A ratio of an average particle diameter of the silicon-containing alloy to an average particle diameter of the carbon material is 240 or greater. The negative electrode for an electric device and an electric device using the negative electrode can improve cycle durability.
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公开(公告)号：US10566608B2
公开(公告)日：2020-02-18
申请号：US14442661
申请日：2013-11-19
IPC分类号： H01M4/134 , C22C13/00 , C22C30/04 , H01M4/38 , H01M10/052 , C22C24/00 , C22C29/18 , C22C30/00 , C22C1/04 , C04B35/01 , H01M4/04 , C01B33/00 , C22C1/10 , C22C27/02 , H01M4/136 , H01M10/0525 , H01M4/62 , H01M4/66 , H01M4/02
摘要： The negative electrode for an electric device includes a current collector and an electrode layer containing a negative electrode active material, a conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by the following formula (1): SixSnyMzAa (in the formula (1), M is at least one metal selected from the group consisting of Al, V, C and a combination thereof, A is inevitable impurities, and x, y, z and a represent mass percent values and satisfy the conditions of 0
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6.发明授权公开(公告)号：US10403890B2
公开(公告)日：2019-09-03
申请号：US15774920
申请日：2015-11-10
摘要： A negative electrode active material which has a ternary alloy composition represented by Si—Sn-M (M is one or two or more transition metal elements) and has a microstructure which has a first phase (silicide phase) having a silicide of a transition metal as a main component and a second phase partially containing Sn and having amorphous or low crystalline silicon as a main component, and further has partially a plurality of independent first phases and partially a eutectic structure of the first phase and the second phase is used for an electric device. The negative electrode active material improves cycle durability of an electric device such as a lithium ion secondary battery.
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7.发明授权公开(公告)号：US10340519B2
公开(公告)日：2019-07-02
申请号：US15774948
申请日：2016-11-10
摘要： To provide a means capable of improving the cycle durability of an electric device such as a lithium ion secondary battery. A negative electrode active material containing a silicon-containing alloy having ternary alloy composition represented by Si—Sn-M (M is one or two or more transition metal elements) or quaternary alloy composition represented by Si—Sn-M-Al (M is one or two or more transition metal elements) and having a structure wherein an a-Si phase containing amorphous or low crystalline silicon containing tin in a silicon crystal structure in form of a solid solution is dispersed in a silicide phase containing a silicide of a transition metal as a main component is used in an electric device. The negative electrode active material improves the cycle durability of an electric device such as a lithium ion secondary battery.
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公开(公告)号：US10276866B2
公开(公告)日：2019-04-30
申请号：US15537270
申请日：2014-12-17
发明人： Manabu Watanabe , Tomohiro Kaburagi , Youichi Yoshioka , Hirokazu Komatsu , Nobutaka Chiba , Shinji Yamamoto
IPC分类号： H01M4/36 , H01M4/38 , H01M10/052 , B22F9/00 , C22C1/04 , C22C1/10 , C22C29/18 , B22F9/04 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/02
摘要： In an electric device the negative electrode active material layer includes a silicide phase containing a silicide of a transition metal is dispersed in a parent phase containing amorphous or low crystalline silicon as a main component, a predetermined composition, and a ratio value (B/A) of a diffraction peak intensity B of a silicide of a transition metal in a range of 2θ=37 to 45° to a diffraction peak intensity A of a (111) plane of Si in a range of 2θ=24 to 33° in a predetermined range in an X-ray diffraction measurement using a CuKα1 ray is used as a Si-containing alloy. A solid solution or an oxide-coated solid solution in which a coating layer containing an oxide in a predetermined amount is formed on the particle surface of the solid solution and is used in the positive electrode active material layer.
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9.发明授权公开(公告)号：US10651465B2
公开(公告)日：2020-05-12
申请号：US16309416
申请日：2016-06-16
发明人： Youichi Yoshioka , Nobutaka Chiba , Manabu Watanabe , Masaya Arai
IPC分类号： H01M4/38 , C22C29/18 , H01M10/0525 , C22C28/00 , H01M4/02
摘要： A negative electrode active material including a silicon-containing alloy having a ternary alloy composition expressed by Si—Sn—Ti and including a structure in which an a-Si phase containing amorphous or low-crystalline silicon formed by dissolving tin in a crystal structure of silicon is dispersed in a parent phase of a silicide phase including TiSi2, wherein when a peak intensity of a Si—O bond peak that is observed at a position where an interatomic distance in a radial wave function observed by XAFS is 0.13 nm is S(1) and a peak intensity of a Si—Si bond peak that is observed at a position where the interatomic distance is 0.2 nm is S(2), a relation of S(2)>S(1) is satisfied is used for an electrical device. When used, the negative electrode active material achieves both cycle durability and charging-discharging efficiency for an electrical device such as a lithium ion secondary battery.
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公开(公告)号：US20190214643A1
公开(公告)日：2019-07-11
申请号：US16351064
申请日：2019-03-12
发明人： Fumihiro Miki , Manabu Watanabe , Nobutaka Chiba , Kei Kitaura , Tohru Wada
IPC分类号： H01M4/38 , C22C29/06 , C22C1/04 , C22C30/04 , H01M4/42 , C22C28/00 , H01M10/0525 , C22C29/18 , C22C13/00
CPC分类号： H01M4/386 , C22C1/0483 , C22C13/00 , C22C28/00 , C22C29/06 , C22C29/18 , C22C30/04 , H01M4/387 , H01M4/42 , H01M10/052 , H01M10/0525 , H01M2004/027
摘要： A negative electrode active material having high cycle durability contains an alloy represented by the following chemical formula (1): SixSnyMzAa (1) wherein M is Zn, A is unavoidable impurities, x, y, z, and a represent % by mass values, and in that case, 0
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