公开(公告)号：US10826054B2

公开(公告)日：2020-11-03

申请号：US15763480

申请日：2016-09-29

申请人： TORAY INDUSTRIES, INC.

发明人： Takashi Konishi ,  Eiichiro Tamaki ,  Manabu Kawasaki ,  Koki Miyazono

IPC分类号： H01M4/131 ,  H01M4/525 ,  H01M4/13 ,  H01M4/36 ,  H01M4/139 ,  H01M4/62 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/505 ,  H01M10/0525

摘要： An object of the present invention is to improve the electron conductivity and ion conductivity of the surface of a positive electrode active material to provide a lithium ion battery having high capacity and high output. The present invention relates to a positive electrode for a lithium ion secondary battery, including a mixture layer containing a positive electrode active material for a lithium ion secondary battery and graphene, wherein the mixture layer has a percentage of abundance of silicon composing a siloxane bond in total elements of 0.4 atomic % or more as measured by X-ray photoelectron spectroscopy.

公开(公告)号：US20180261402A1

公开(公告)日：2018-09-13

申请号：US15760506

申请日：2016-09-09

申请人： TORAY INDUSTRIES, INC.

发明人： Koichiro Manabe ,  Eiichiro Tamaki ,  Manabu Kawasaki

IPC分类号： H01G11/38 ,  H01M4/583 ,  C01B32/194 ,  B01J13/00

CPC分类号： H01G11/38 ,  B01J13/0026 ,  C01B32/194 ,  C01B2204/22 ,  C01B2204/32 ,  C01P2002/85 ,  C01P2006/12 ,  C01P2006/22 ,  H01G11/24 ,  H01G11/36 ,  H01M4/583 ,  H01M4/625

摘要： A graphene material in a specific form is provided that has a high dispersibility and can maintain a high electric conductivity and ion conductivity when used as material for electrode manufacturing. A graphene dispersion liquid is provided including graphene dispersed in a solvent having a N-methyl pyrolidone content of 50 mass % or more and, when diluted with N-methylpyrolidone to a graphene weight fraction of 0.000013, giving a diluted solution having a weight-based absorptivity coefficient, which is calculated by Equation (1) given below, of 25,000 cm-1 or more and 200,000 cm-1 or less at a wavelength of 270 nm: weight-based absorptivity coefficient (cm−1)=absorbance/{0.000013×cell's optical path length (cm)}.  (1)

公开(公告)号：US20160164074A1

公开(公告)日：2016-06-09

申请号：US14892748

申请日：2014-05-19

申请人： TORAY INDUSTRIES, INC.

发明人： Eiichiro Tamaki ,  Yasu Kubota ,  Hiroaki Kawamura ,  Miyuki Matsushita

IPC分类号： H01M4/36 ,  H01M4/62 ,  H01M4/58

CPC分类号： H01M4/364 ,  H01M4/0471 ,  H01M4/362 ,  H01M4/5825 ,  H01M4/625 ,  H01M2004/028

摘要： A method is provided for producing polyanionic positive electrode active material composite particles, which comprises: a step 1 wherein precursor composite granulated bodies, each of which contains a polyanionic positive electrode active material precursor particle in graphite oxide, are formed by mixing a polyanionic positive electrode active material precursor and graphite oxide; and a step 2 wherein the precursor composite granulated bodies obtained in step 1 are heated at 500° C. or higher in an inert atmosphere or in a reducing atmosphere. The maximum intensity of the X-ray diffraction peak based on the positive electrode active material is less than 50% of the maximum intensity of the X-ray diffraction peak based on the materials other than the positive electrode active material. The maximum intensity of the X-ray diffraction peak based on the positive electrode active material is 50% or more of the maximum intensity of the X-ray diffraction peak based on the materials other than the positive electrode active material.

摘要翻译： 提供了一种用于制造聚阴离子正极活性物质复合颗粒的方法，其包括：步骤1，其中在氧化石墨中含有聚阴离子正极活性物质前体颗粒的前体复合颗粒体通过将聚阴离子正极 活性物质前体和氧化石墨; 和步骤2，其中步骤1中获得的前体复合粒状体在惰性气氛或还原气氛中在500℃或更高温度下加热。 基于正极活性物质的X射线衍射峰的最大强度小于基于正极活性物质以外的材料的X射线衍射峰的最大强度的50％。 基于正极活性物质的X射线衍射峰的最大强度是除了正极活性物质以外的材料的X射线衍射峰的最大强度的50％以上。

公开(公告)号：US20220145027A1

公开(公告)日：2022-05-12

申请号：US17433353

申请日：2020-03-12

申请人： Toray Industries, Inc.

发明人： Tomohiro Kato ,  Eiichiro Tamaki

IPC分类号： C08J7/04 ,  C08G77/442 ,  C08J5/24 ,  C08J7/044 ,  C09D183/10 ,  C09D5/02 ,  C09D5/24 ,  A61B5/268 ,  A61B5/28 ,  D06M11/74 ,  D06M15/643

摘要： A conductive sheet comprising a conductive substrate layer and a hydrogel layer formed of a silicone hydrogel having a polymer comprising a repeat unit (A) derived from a monomer represented by Formula (I) as a gel skeleton. Provided is a conductive sheet which can maintain adhesiveness and flexibility even when used for a long period of time and can attain high biocompatibility.

公开(公告)号：US20200075937A1

公开(公告)日：2020-03-05

申请号：US16489507

申请日：2017-11-01

申请人： Toray Industries, Inc.

发明人： Takashi Konishi ,  Eiichiro Tamaki

IPC分类号： H01M4/36 ,  H01M4/62 ,  H01M4/1391 ,  H01M4/1393 ,  H01M10/0525

摘要： A secondary battery electrode is provided that may achieve a non-aqueous electrolyte secondary battery having a high energy output density with a small amount of a conductive aid. The secondary battery electrode has a mixture layer containing graphene and a secondary battery active substance. The secondary battery electrode has a mean aspect ratio of 2.0 or greater in an electric conductive material portion from a cross section of the secondary battery electrode, as specified by the method described below. The method for specifying the electric conductive material portion comprises: (1) acquiring, by scanning spreading resistance microscopy, a mapping image and a histogram of spreading resistance values for a mixture layer portion; and (2), defining R1 as the lowest resistance value in the histogram, accumulating sequentially from R1 the frequency, defining R2 as the spreading resistance value when the cumulative frequency has exceeded 3% relative to the cumulative frequency over the entire data, further defining R3 as a spreading resistance value of ten times R2, and, with R3 serving as the threshold value, binarizing the mapping image to define as the electric conductive material portion the portion having a resistance value of R3 or lower.

公开(公告)号：US10230111B2

公开(公告)日：2019-03-12

申请号：US15517399

申请日：2015-10-06

申请人： TORAY INDUSTRIES, INC.

发明人： Hanxiao Yang ,  Eiichiro Tamaki ,  Yasuo Kubota

IPC分类号： H01M4/583 ,  B82Y30/00 ,  H01M4/62 ,  C01B32/05 ,  C01B32/192 ,  H01M10/0525 ,  B82Y40/00 ,  H01M10/052

摘要： The present invention relates to preparation of a highly dispersible graphene powder. Further, the present invention includes providing an electrode for a lithium ion battery having good output characteristics and cycle characteristics by utilizing a highly dispersible graphene powder. The present invention also includes providing a graphene powder having a specific surface area of 80 m2/g or more to 250 m2/g or less as measured by BET measurement, and an oxygen-to-carbon element ratio of 0.09 or more to 0.30 or less as measured by X-ray photoelectron spectroscopy.

公开(公告)号：US20150325848A1

公开(公告)日：2015-11-12

申请号：US14410827

申请日：2013-06-28

申请人： TORAY INDUSTRIES, INC.

发明人： Tetsuo Yamashita ,  Natsuko Chayama ,  Tomoyuki Yuba ,  Eiichiro Tamaki ,  Yasuo Kubota ,  Toshiyuki Nonaka

IPC分类号： H01M4/36 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/38 ,  H01M4/133 ,  H01M4/134

CPC分类号： H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  Y02T10/7011

摘要： The present invention provides a negative electrode material for a lithium ion secondary battery, a composite negative electrode material for a lithium ion secondary battery, a resin composition for a lithium ion secondary battery negative electrode, and a negative electrode for a lithium ion secondary electrode, which may provide high charge/discharge capacity, and excellent initial charge-discharge characteristics and capacity retention. The surfaces of core particles of silicon of 5 nm or more and 100 nm or less in average particle size are coated with a coating layer to use a negative electrode material containing substantially no silicon oxide in the coating layer, or a composite negative electrode material for a lithium ion secondary battery, which includes the negative electrode material and a matrix material, further with the use of a polyimide resin or a precursor thereof as a bonding resin, thereby making it possible to achieve high charge/discharge capacity and excellent capacity retention, as well as high initial efficiency.

摘要翻译： 本发明提供一种锂离子二次电池用负极材料，锂离子二次电池用复合负极材料，锂离子二次电池负极用树脂组合物和锂离子二次电极用负极， 这可以提供高充电/放电容量，以及优异的初始充放电特性和容量保持。 平均粒径为5nm以上且100nm以下的芯的核心颗粒的表面涂覆有涂层，以使用在涂层中基本上不含氧化硅的负极材料，或复合负极材料 包括负极材料和基质材料的锂离子二次电池，进一步使用聚酰亚胺树脂或其前体作为接合树脂，从而可以实现高充电/放电容量和优异的容量保持率， 以及初始效率高。

公开(公告)号：US20210305576A1

公开(公告)日：2021-09-30

申请号：US17269643

申请日：2019-09-06

申请人： Toray Industries, Inc.

发明人： Takashi Konishi ,  Eiichiro Tamaki

IPC分类号： H01M4/62 ,  H01M10/0525

摘要： An electrode for a secondary battery is described that is capable of realizing a secondary battery having a high output and a long lifespan using a small amount of conductive auxiliary, where the electrode for secondary battery has a mixture layer containing graphene and active material particles for a secondary battery containing at least lithium and nickel and in which an average aspect ratio of conductive material portions in a cross section of the electrode for the secondary battery is 2.0 or more.

公开(公告)号：US10714754B2

公开(公告)日：2020-07-14

申请号：US16077627

申请日：2017-02-20

申请人： Toray Industries, Inc.

发明人： Koichiro Manabe ,  Eiichiro Tamaki ,  Manabu Kawasaki

IPC分类号： H01M4/62 ,  C01B32/15 ,  C01B32/182 ,  C08L101/00 ,  H01M4/36 ,  C01B32/18 ,  H01M4/131 ,  H01M4/139 ,  C08K9/04 ,  C01B32/194 ,  B82Y30/00 ,  B82Y40/00

摘要： The purpose of the present invention is to provide a graphene which has high dispersibility, high electrical conductivity and oxidation resistance namely a graphene which has high electrochemical stability. In order to achieve the above-described purpose, a surface-treated graphene according to the present invention is obtained by having a compound represented by general formula (1) or a neutralized salt thereof adhere to a graphene. In general formula (1), A represents a benzene-based aromatic group with a condensation number of 1-4, which has no phenolic hydroxy group; R1 represents a direct bond, a divalent hydrocarbon group having 1-12 carbon atoms, or a divalent organic group having 1-12 carbon atoms, which has a structure selected from the group consisting of an ether bond, an ester bond, an alcohol structure and a carbonyl structure; each of R2 and R3 independently represents a hydrogen atom, a hydrocarbon group having 1-12 carbon atoms, or an organic group having 1-12 carbon atoms, which has a structure selected from the group consisting of an ether bond, an ester bond, an alcohol structure and a carbonyl structure; and n represents an integer of 1-6.

公开(公告)号：US10518506B2

公开(公告)日：2019-12-31

申请号：US15317588

申请日：2015-06-08

申请人： TORAY INDUSTRIES, INC.

发明人： Koki Miyazono ,  Yutaka Katayama ,  Yusuke Kawabata ,  Eiichiro Tamaki ,  Yasuo Kubota

IPC分类号： B32B9/00 ,  B32B7/12 ,  B32B5/16 ,  B32B27/06 ,  H01B1/04 ,  C08J7/06 ,  G01N27/30 ,  B32B9/04 ,  B32B27/14 ,  B32B27/36 ,  F28F21/02

摘要： Provided are a laminate that has high smoothness, planar homogeneity, and substrate adhesion and undergoes little change in physical properties even if degradation of surface quality due to physical contact in use has occurred, and a method for producing the homogeneous laminate in a convenient manner in a small number of steps. A laminate includes a substrate made of a polymer material and a partially oxidized thin layer graphite piece layer including partially oxidized thin layer graphite pieces and having an average thickness to of 3.0 nm to 10,000 nm, the layer being formed on the substrate and bonded to the substrate via a chemical bond.