公开(公告)号：US20160111724A1

公开(公告)日：2016-04-21

申请号：US14894201

申请日：2014-05-30

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi NAKAMURA ,  Nobuaki ISHII ,  Yuta HIRANO

IPC: H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/587 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/362 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/463 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/027

Abstract: A method for producing a negative electrode material for lithium ion secondary battery which includes: pressing a mixed liquid comprising particles (B) containing an element capable of occluding/releasing lithium ions, carbon nanotubes (C) of which not less than 95% by number have a fiber diameter of not less than 5 nm and not more than 40 nm, and water into a pulverizing nozzle of a high-pressure dispersing device to obtain a paste or slurry; drying the paste or slurry into a powder; and mixing the powder and carbon particles (A). A negative electrode material for lithium ion secondary battery including carbon particles (A); and flocculates in which particles (B) containing an element capable of occluding/releasing lithium ions and carbon nanotubes (C) of which not less than 95% by number has a fiber diameter of not less than 5 nm and not more than 40 nm are uniformly composited.

Abstract translation: 一种锂离子二次电池用负极材料的制造方法，其特征在于，包括：包含含有能够吸留或释放锂离子的元素的粒子（B）的混合液，不低于95个数的碳纳米管（C） 纤维直径不小于5nm且不大于40nm，水分入高压分散装置的粉碎喷嘴中以获得糊状物或浆料; 将糊或浆料干燥成粉末; 并混合粉末和碳颗粒（A）。 一种含有碳粒子（A）的锂离子二次电池用负极材料。 并且其中含有能够吸留/释放锂离子的元素的颗粒（B）和其不小于95数量级的碳纳米管（C）的纤维直径不小于5nm且不大于40nm的絮凝物是 均匀合成。

公开(公告)号：US20140010749A1

公开(公告)日：2014-01-09

申请号：US13934327

申请日：2013-07-03

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi NAKAMURA ,  Ryuji YAMAMOTO

IPC: C01B31/02

CPC classification number: C01B31/0253 ,  C01B32/168 ,  D01G13/00 ,  D02G3/04 ,  D06M10/00 ,  H01M4/364 ,  H01M4/587 ,  H01M10/052

Abstract: An object of the present invention is to provide a method for producing composite carbon fibers in which two or more carbon fibers are dispersed in a nearly homogenous state, the composite carbon fibers capable of being easily dispersed in a matrix such as a resin without leaving aggregate, and imparting low resistance. Disclosed is a method for producing composite carbon fibers, which comprises imparting a cavitation effect to slurry containing 6% by mass or less of two or more carbon fibers each having a different average fiber diameter under a pressure of 100 MPa or more and less than 245 MPa thereby to form a composite.

Abstract translation: 本发明的目的是提供一种复合碳纤维的制造方法，其中两个或更多个碳纤维以几乎均匀的状态分散，能够容易地分散在诸如树脂的基质中而不留下骨料的复合碳纤维 并赋予低电阻。 公开了一种复合碳纤维的制造方法，其特征在于，在100MPa以上且小于245℃的压力下，对于含有6质量％以下的两种以上的平均纤维直径不均的碳纤维， 从而形成复合材料。

公开(公告)号：US20200083527A1

公开(公告)日：2020-03-12

申请号：US16498174

申请日：2018-03-20

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi NAKAMURA

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/80 ,  H01M10/0525

Abstract: A positive electrode for lithium ion secondary batteries includes a current collector including a sheet-shaped conductive substrate and a coating layer disposed on one or both sides of the conductive substrate, and a positive electrode active material layer disposed on the coating layer, wherein the coating layer includes a powdery conductive material and a first binder, the positive electrode active material layer includes a positive electrode active material, a conductive auxiliary and a second binder, the void content in the positive electrode active material layer is 43 to 64%, and the difference represented by (Ra1−Ra2) is 0.10 to 0.40 μm wherein Ra1 is the surface roughness of the coating layer and Ra2 is the surface roughness of the surface of the conductive substrate covered by the coating layer.

公开(公告)号：US20170331112A1

公开(公告)日：2017-11-16

申请号：US15529561

申请日：2015-11-19

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi NAKAMURA ,  Yuta HIRANO ,  Akihiro KITAZAKI

IPC: H01M4/62 ,  H01M2/26 ,  H01B1/24 ,  H01M4/04 ,  C01B32/05

CPC classification number: H01M4/62 ,  C01B32/05 ,  H01B1/24 ,  H01B13/00 ,  H01G11/36 ,  H01G11/38 ,  H01G11/86 ,  H01M2/26 ,  H01M4/043 ,  H01M4/139 ,  H01M4/625 ,  H01M2220/20 ,  Y02E60/13 ,  Y02T10/7022

Abstract: A method for producing an electrically conductive paste, including a step of manufacturing paste A by exerting a cavitation effect in mixed liquid A containing multi-walled carbon nanotubes and a solvent, a step of manufacturing paste B from mixed liquid B containing carbon black particles, graphitized carbon nanofibers and a solvent, and a step of mixing paste A and paste B.

公开(公告)号：US20140234724A1

公开(公告)日：2014-08-21

申请号：US14013771

申请日：2013-08-29

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi NAKAMURA ,  Nobuaki ISHII ,  Yuta HIRANO

IPC: H01M4/1393 ,  H01M4/62

CPC classification number: H01M4/1393 ,  H01M4/0404 ,  H01M4/0409 ,  H01M4/043 ,  H01M4/0433 ,  H01M4/139 ,  H01M4/1397 ,  H01M4/621 ,  H01M4/625

Abstract: A battery electrode is obtained by a method comprising: mixing active material (A), carbon fibers (B) having a fiber diameter of not less than 50 nm and not more than 300 nm, carbon fibers (C) having a fiber diameter of not less than 5 nm and not more than 40 nm, carbon black (D) and a binder (E) by dry process to obtain a mixture; to the mixture, adding not less than 5/95 and not more than 20/80 of a liquid medium by mass relative to the total mass of the active material (A), the carbon fibers (B), the carbon fibers (C), carbon black (D) and the binder (E); performing kneading while applying shear stress; and shaping the kneaded material into a sheet form.

Abstract translation: 通过以下方法获得电池电极：将活性材料（A），纤维直径不小于50nm且不大于300nm的碳纤维（B）混合，纤维直径不大于的碳纤维（C） 小于5nm且不大于40nm，通过干法处理炭黑（D）和粘合剂（E）以获得混合物; 相对于活性物质（A），碳纤维（B），碳纤维（C）的总质量，添加不少于5/95且不大于20/80的液体介质， ，碳黑（D）和粘合剂（E）; 施加剪切应力时进行揉搓; 并将捏合的材料成型为片状。

公开(公告)号：US20140212762A1

公开(公告)日：2014-07-31

申请号：US14166359

申请日：2014-01-28

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi NAKAMURA ,  Nobuaki ISHII ,  Masataka TAKEUCHI

IPC: H01M4/587

CPC classification number: H01M4/587 ,  H01M4/364 ,  H01M4/386 ,  H01M4/387 ,  H01M4/42 ,  H01M4/44 ,  H01M10/0525 ,  Y02E60/122

Abstract: Particles (A) including an element capable of intercalating and deintercalating lithium ions, carbon particles (B) capable of intercalating and deintercalating lithium ions, multi-walled carbon nanotubes (C), carbon nanofibers (D) and optionally electrically conductive carbon particles (E) are mixed in the presence of shear force to obtain a composite electrode material. A lithium ion secondary battery is obtained using the above composite electrode material.

Abstract translation: 包含能够嵌入和脱嵌锂离子的元素的颗粒（A），能够嵌入和脱嵌锂离子的碳颗粒（B），多壁碳纳米管（C），碳纳米纤维（D）和任选的导电碳颗粒 ）在剪切力的存在下混合以获得复合电极材料。 使用上述复合电极材料获得锂离子二次电池。

公开(公告)号：US20140272596A1

公开(公告)日：2014-09-18

申请号：US14047637

申请日：2013-10-07

Applicant: SHOWA DENKO K.K.

Inventor： Ryuji YAMAMOTO ,  Takeshi NAKAMURA ,  Nobuaki ISHII ,  Yuta HIRANO

IPC: H01M4/62

CPC classification number: H01M4/625 ,  H01M4/5825 ,  H01M10/052

Abstract: Provided is composite carbon fibers comprising multi-walled carbon nanotubes wherein 99% by number or more of the multi-walled carbon nanotubes have a fiber diameter of not less than 5 nm and not more than 40 nm, carbon particles having a primary particle diameter of not less than 20 nm and not more than 100 nm and graphitized carbon nanofibers wherein 99% by number or more of the graphitized carbon nanofibers have a fiber diameter of not less than 50 nm and not more than 300 nm, wherein the multi-walled carbon nanotubes are homogeneously dispersed between the graphitized carbon nanofibers and the carbon particles.

Abstract translation: 提供了包含多层碳纳米管的复合碳纤维，其中多壁碳纳米管的99质量％或更多的纤维直径不小于5nm且不大于40nm，具有一次粒径为 不小于20nm且不大于100nm的石墨化碳纳米纤维，其中99％或更多的石墨化碳纳米纤维的纤维直径不小于50nm且不大于300nm，其中多壁碳 纳米管均匀分散在石墨化碳纳米纤维和碳颗粒之间。

公开(公告)号：US20140011092A1

公开(公告)日：2014-01-09

申请号：US13934429

申请日：2013-07-03

Applicant: Showa Denko K.K

Inventor： Ryuji YAMAMOTO ,  Takeshi NAKAMURA

IPC: H01M4/62 ,  H01B1/04

CPC classification number: H01M4/625 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/16 ,  C01B2202/36 ,  D01F9/127 ,  H01B1/04 ,  Y10T428/2918

Abstract: An object of the present invention is to provide composite carbon fibers in which multiwalled carbon nanotubes are homogeneously dispersed between graphitized carbon nanofibers and near the surface of the graphitized carbon nanofibers, the composite carbon fibers being capable of easily being dispersed in a matrix such as resin without leaving aggregates, and also imparting low resistance. Disclosed are composite carbon fibers comprising multiwalled carbon nanotubes having a fiber diameter of 5 nm or more and 30 nm or less and graphitized carbon nanofibers having a fiber diameter of 50 nm or more and 300 nm or less, wherein the multiwalled carbon nanotubes are homogeneously dispersed between the graphitized carbon nanofibers and near the surface of the graphitized carbon nanofibers.

Abstract translation: 本发明的目的是提供复合碳纤维，其中多层碳纳米管均匀分散在石墨化碳纳米纤维和石墨化碳纳米纤维表面附近，复合碳纤维能够容易地分散在基质如树脂中 而不会留下聚集体，并且赋予低电阻。 公开了包含纤维直径为5nm以上且30nm以下的多壁碳纳米管和纤维直径为50nm以上且300nm以下的石墨化碳纳米纤维的复合碳纤维，其中，多壁碳纳米管均匀分散 石墨化碳纳米纤维与石墨化碳纳米纤维表面附近。