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公开(公告)号：US11637349B2
公开(公告)日：2023-04-25
申请号：US16323334
申请日：2017-09-01
发明人： Toshihiro Shigematsu , Tomohiro Sato , Makoto Kato
IPC分类号： H01M50/44 , H01M50/423 , H01M50/451 , H01M50/454
摘要： It is an object of the present invention to provide a substrate for lithium ion battery separators which has high adhesion to an inorganic particle layer, can be made thin and is excellent in tensile strength and cuttability and a lithium ion battery separator including the substrate for lithium ion battery separators. The substrate for lithium ion battery separators which contains heat-resistant fibers and synthetic resin short fibers contains fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml as the heat-resistant fibers and has a content of the fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml of not less than 1.0 mass % to less than 5.0 mass % based on the total of all the fiber components contained in the substrate. The modified freeness is a value measured in accordance with JIS P8121-2:2012 except that an 80-mesh wire net having a wire diameter of 0.14 mm and an opening of 0.18 mm is used as a screening plate and the concentration of a sample is 0.1%.
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公开(公告)号：US09653717B2
公开(公告)日：2017-05-16
申请号：US14468642
申请日：2014-08-26
发明人： Hiroo Kaji , Toshihiro Shigematsu
CPC分类号： H01M2/1626 , D21H11/18 , D21H13/02 , H01M2/145
摘要： A separator for electrochemical element, comprising a porous sheet that contains as a main fiber, a fibrillated solvent spun cellulose fiber with an average fiber length of 0.40 to 1.10 mm, has an average internal bond strength of 60 mJ or more in a thickness direction, and has a lowest internal bond strength of 30 mJ or more in the thickness direction, a process for producing the separator, and an electrochemical element using the separator. The separator for electrochemical element has strong mechanical strength and excellent processability.
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3.发明申请BASE FOR LITHIUM ION SECONDARY BATTERY SEPARATORS, METHOD FOR PRODUCING BASE FOR LITHIUM ION SECONDARY BATTERY SEPARATORS, AND LITHIUM ION SECONDARY BATTERY SEPARATOR 有权锂离子二次电池分离器的制造方法，锂离子二次电池分离器的制造方法以及锂离子二次电池分离器公开(公告)号：US20150024250A1
公开(公告)日：2015-01-22
申请号：US14376531
申请日：2013-01-25
IPC分类号： H01M2/16 , H01M2/14 , H01M10/0525
CPC分类号： H01M2/162 , D21H13/24 , D21H25/04 , H01M2/145 , H01M2/1646 , H01M2/1666 , H01M10/0525
摘要： A base material for a lithium ion secondary battery separator provided by the present invention comprises a polyethylene terephthalate fiber, in which an average fiber diameter of the polyethylene terephthalate fiber is 9.0 μm or less, a specific X-ray diffraction intensity derived from the polyethylene terephthalate fiber is 300 cps/(g/m2) or more, and a coefficient of variation of a specific X-ray diffraction intensity is 12.0% or less, and is excellent in the workability during production and excellent in mechanical strength, uniformity and handling in a subsequent treatment step.
摘要翻译： 本发明提供的锂离子二次电池用隔膜用基材包括聚对苯二甲酸乙二醇酯纤维的平均纤维直径为9.0μm以下的聚对苯二甲酸乙二醇酯纤维，来自聚对苯二甲酸乙二醇酯的特定X射线衍射强度 纤维为300cps /（g / m 2）以上，特定X射线衍射强度的变异系数为12.0％以下，制造时的加工性优异，机械强度，均匀性和处理性优异 随后的处理步骤。
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公开(公告)号：US09768430B2
公开(公告)日：2017-09-19
申请号：US14763967
申请日：2014-01-28
发明人： Tomohiro Sato , Toshihiro Shigematsu , Makoto Kato , Kenji Hyodo , Wakana Aizawa
IPC分类号： H01M2/16 , D04H1/55 , H01M2/14 , H01M10/0525 , H01M10/052
CPC分类号： H01M2/162 , D04H1/55 , H01M2/145 , H01M10/052 , H01M10/0525
摘要： A non-woven fabric base material for a lithium ion secondary battery separator composed mainly of a polyethylene terephthalate fiber, characterized in that the non-woven fabric base material comprises a polyethylene terephthalate binder fiber and a crystallized polyethylene terephthalate fiber, and the content of a polyethylene terephthalate binder fiber having a fiber length of 2.5 mm or less is 10 to 60 mass %.
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公开(公告)号：US10818898B2
公开(公告)日：2020-10-27
申请号：US16098152
申请日：2017-05-01
摘要： A separator for electrochemical elements includes beaten solvent-spun cellulose fibers and rayon fibers having a fiber diameter of 9.5 μm or less. More preferably, the separator for electrochemical elements has a content of the rayon fibers relative to all fibers of 10 to 25% by mass, and can be applied to electrochemical elements such as electric double layer capacitors, hybrid capacitors, redox capacitors, and lithium secondary batteries. The separator can provide low internal short circuit failure rates and high surface strength.
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公开(公告)号：US10230087B2
公开(公告)日：2019-03-12
申请号：US15631267
申请日：2017-06-23
发明人： Tomohiro Sato , Toshihiro Shigematsu , Makoto Kato , Kenji Hyodo , Wakana Aizawa
IPC分类号： H01M2/14 , H01M2/16 , H01M10/0525 , D04H1/55 , H01M10/052
摘要： A non-woven fabric base material for a lithium ion secondary battery separator composed mainly of a polyethylene terephthalate fiber, characterized in that the non-woven fabric base material comprises a polyethylene terephthalate binder fiber and a crystallized polyethylene terephthalate fiber, and the content of a polyethylene terephthalate binder fiber having a fiber length of 2.5 mm or less is 10 to 60 mass %.
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公开(公告)号：US11335972B2
公开(公告)日：2022-05-17
申请号：US16470674
申请日：2017-12-18
发明人： Toshihiro Shigematsu
IPC分类号： H01M50/44 , H01M10/0525 , H01M50/411
摘要： It is an object of the present invention to provide a lithium ion battery separator which can be made thin, is excellent in tensile strength and cuttability and has low internal resistance, a low incidence of internal short circuit failure and high cycle characteristics and a lithium ion battery including the separator. In a lithium ion battery separator containing heat-resistant fibers and synthetic resin short fibers, fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml are contained as the heat-resistant fibers, and the content of the fibrillated heat-resistant fibers having a modified freeness of not more than 300 ml is not less than 1.0 mass % to less than 5.0 mass % based on the total of all the fiber components contained in the separator. Modified freeness: This is a value measured in accordance with JIS P8121-2:2012 except that an 80-mesh wire net having a wire diameter of 0.14 mm and an opening of 0.18 mm is used as a screening plate and the concentration of a sample is 0.1%.
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8.发明授权Base for lithium ion secondary battery separators, method for producing base for lithium ion secondary battery separators, and lithium ion secondary battery separator 有权用于锂离子二次电池隔板的基座，锂离子二次电池隔板用基板的制造方法以及锂离子二次电池隔板公开(公告)号：US09570726B2
公开(公告)日：2017-02-14
申请号：US14376531
申请日：2013-01-25
IPC分类号： H01M2/16 , D21H25/04 , D21H13/24 , H01M2/14 , H01M10/0525
CPC分类号： H01M2/162 , D21H13/24 , D21H25/04 , H01M2/145 , H01M2/1646 , H01M2/1666 , H01M10/0525
摘要： A base material for a lithium ion secondary battery separator provided by the present invention comprises a polyethylene terephthalate fiber, in which an average fiber diameter of the polyethylene terephthalate fiber is 9.0 μm or less, a specific X-ray diffraction intensity derived from the polyethylene terephthalate fiber is 300 cps/(g/m2) or more, and a coefficient of variation of a specific X-ray diffraction intensity is 12.0% or less, and is excellent in the workability during production and excellent in mechanical strength, uniformity and handling in a subsequent treatment step.
摘要翻译： 本发明提供的锂离子二次电池用隔膜用基材包括聚对苯二甲酸乙二醇酯纤维的平均纤维直径为9.0μm以下的聚对苯二甲酸乙二醇酯纤维，来自聚对苯二甲酸乙二醇酯的特定X射线衍射强度 纤维为300cps /（g / m 2）以上，特定X射线衍射强度的变异系数为12.0％以下，制造时的加工性优异，机械强度，均匀性和处理性优异 随后的处理步骤。
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