-
1.发明授权
公开(公告)号：US5356574A
公开(公告)日：1994-10-18
申请号：US118742
申请日：1993-09-10
摘要： A process for providing activated carbon fibers consisting of optically anisotropic components and optically isotropic components by spinning a pitch into fibers, and infusibilizing the resulting fibers, followed by an activation treatment. The pitch for spinning is prepared by melt mixing together (A) 100 parts by weight of an optically isotropic pitch having a softening point of 230.degree.-300.degree. C. obtained by heat treatment of a pitch while blowing an oxygen containing gas into the pitch, and (B) 10-50 parts by weight of an optically isotropic pitch having a softening point of 200.degree.-270.degree. C. obtained by polymerization of naphthalene in the presence of a Lewis acid catalyst. The optically isotropic pitch (B) is further characterized as having the property of being converted into an optically anisotropic pitch by the stress occurring at the time of spinning. The carbon fibers produced by spinning the spinning pitch into fibers have a double layer structure, the surface layer exhibiting optical isotropy and the center portion exhibiting optical anisotropy. The spun fibers are infusibilized, followed by carbonization and/or graphitization.
摘要翻译： 提供由光学各向异性组分和光学各向同性组分组成的活性炭纤维的方法，其通过将沥青纺丝成纤维，并使所得到的纤维熔融化，然后进行活化处理。 通过熔融混合（A）将100重量份的软化点为230-300℃的光学各向同性沥青通过熔融混合在一起而制备，所述光学各向同性沥青通过在将含氧气体吹入沥青中的同时加热处理而获得 ，（B）10-50重量份的通过萘在路易斯酸催化剂存在下聚合得到的软化点为200〜-270℃的光学各向同性沥青。 光学各向同性沥青（B）的特征还在于通过旋转时发生的应力将其转化为光学各向异性的沥青。 通过将纺丝沥青纺丝成纤维而生产的碳纤维具有双层结构，表面层具有光学各向同性，中心部分表现出光学各向异性。 纺丝纤维是不熔化的，随后碳化和/或石墨化。
-
2.发明授权
公开(公告)号：US5792577A
公开(公告)日：1998-08-11
申请号：US755258
申请日：1996-11-22
CPC分类号： H01M4/587
摘要： A negative electrode material for use in lithium-ion secondary batteries, comprising milled pitch-based graphite fibers (A) obtained by graphitization at 2400.degree. C. or higher and milled pitch-based carbon fibers (B) obtained by carbonization at 550.degree. to 1300.degree. C. In this negative electrode material, it is preferred that both the milled pitch-based graphite fibers (A) and the milled pitch-based carbon fibers (B) have an average particle size of 10 to 30 .mu.m, that the ratio of milled pitch-based carbon and graphite fibers having a particle size of 5 .mu.m or less to all the milled pitch-based carbon and graphite fibers is not greater than 10% by weight and that the milled pitch-based graphite fibers (A) and the milled pitch-based carbon fibers (B) are blended at a weight ratio (A/B) of 95/5 to 40/60. A negative electrode which has a large capacity at the time of having been stabilized, exhibits a high charge and discharge efficiency at the initial stage and is excellent in charge and discharge cycle characteristics can be provided by the blending of milled pitch-based carbon fibers with milled pitch-based graphite fibers.
摘要翻译： 一种用于锂离子二次电池的负极材料，包括通过在2400℃以上的石墨化获得的磨碎沥青类石墨纤维（A）和通过在550℃下碳化获得的研磨沥青类碳纤维（B） 1300℃。在该负极材料中，优选研磨的沥青类石墨纤维（A）和碾磨沥青类碳纤维（B）的平均粒径为10〜30μm， 与所有研磨沥青类碳纤维和石墨纤维相比，粒径为5μm以下的研磨沥青类碳纤维和石墨纤维的比例为10重量％以下，研磨沥青类石墨纤维（A ）和研磨的沥青类碳纤维（B）以95/5至40/60的重量比（A / B）共混。 在稳定化时具有大容量的负极在初始阶段具有高的充放电效率，并且充放电循环特性优异，可以通过将研磨的沥青类碳纤维与 研磨的沥青基石墨纤维。
-
公开(公告)号：US06528036B2
公开(公告)日：2003-03-04
申请号：US09929017
申请日：2001-08-15
申请人： Yoshiyuki Nishimura , Hiroshi Ejiri
发明人： Yoshiyuki Nishimura , Hiroshi Ejiri
IPC分类号： D01F912
摘要： Milled carbon fibers are provided which have a fiber cut surface and a fiber axis intersecting with each other at cross angles, the smaller one thereof being at least 65° on the average. The milled carbon fibers may have a specific surface area as measured by the BET method of 0.2 to 10 m2/g. The milled carbon fibers may be obtained by a process comprising melt spinning of mesophase pitch, infusibilization, milling of the infusibilized pitch fibers as obtained or after a primary heat treatment at low temperatures in an inert gas and a high-temperature heat treatment in an inert gas. Even when the graphite layer plane has achieved high-level growth, the above milled carbon fibers have low reactivity with a metal of high temperature or the like during the molding or use thereof because the proportion of reactive exposed surface of the inner portion of the fiber is small, so that the use of the milled carbon fibers can improve the mechanical strength and high-temperature heat resistance of the composite material.
摘要翻译： 提供了具有纤维切割表面和纤维轴线交叉相交的磨细碳纤维，其中较小的一个纤维平均至少为65°。 研磨的碳纤维可以具有通过BET法测量的比表面积为0.2至10m 2 / g。 研磨的碳纤维可以通过包括中间相沥青的熔融纺丝，不熔化，所得到的不熔化沥青纤维的研磨或在惰性气体中的低温初次热处理和惰性气体的高温热处理中的方法获得 加油站。 即使当石墨层平面达到高水平生长时，上述研磨碳纤维在模制或使用期间与高温等金属的反应性低，因为纤维内部的反应性暴露表面的比例 因此使用研磨的碳纤维可以提高复合材料的机械强度和耐高温性。
-
公开(公告)号：US06303095B1
公开(公告)日：2001-10-16
申请号：US08306610
申请日：1994-09-15
申请人： Yoshiyuki Nishimura , Hiroshi Ejiri
发明人： Yoshiyuki Nishimura , Hiroshi Ejiri
IPC分类号： D01F9145
CPC分类号： D01F9/322 , D01F9/145 , Y10T428/2918
摘要： Milled carbon fibers are provided which have a fiber cut surface and a fiber axis intersecting with each other at cross angles, the smaller one thereof being at least 65° on the average. The milled carbon fibers may have a specific surface area as measured by the BET method of 0.2 to 10 m2/g. The milled carbon fibers may be obtained by a process comprising melt spinning of mesophase pitch, infusibilization, milling of the infusibilized pitch fibers as obtained or after a primary heat treatment at low temperatures in an inert gas and a high-temperature heat treatment in an inert gas. Even when the graphite layer plane has achieved high-level growth, the above milled carbon fibers have low reactivity with a metal of high temperature or the like during the molding or use thereof because the proportion of reactive exposed surface of the inner portion of the fiber is small, so that the use of the milled carbon fibers can improve the mechanical strength and high-temperature heat resistance of the composite material.
摘要翻译： 提供了具有纤维切割表面和纤维轴线交叉相交的磨细碳纤维，其中较小的一个纤维平均至少为65°。 研磨的碳纤维可以具有通过BET法测量的比表面积为0.2至10m 2 / g。 研磨的碳纤维可以通过包括中间相沥青的熔融纺丝，不熔化，所得到的不熔化沥青纤维的研磨或在惰性气体中的低温初次热处理和惰性气体的高温热处理中的方法获得 加油站。 即使当石墨层平面达到高水平生长时，上述研磨碳纤维在模制或使用期间与高温等金属的反应性低，因为纤维内部的反应性暴露表面的比例 因此使用研磨的碳纤维可以提高复合材料的机械强度和耐高温性。
-
公开(公告)号：US5556723A
公开(公告)日：1996-09-17
申请号：US306614
申请日：1994-09-15
CPC分类号： H01M10/05 , H01M4/0459 , H01M4/382 , H01M4/583 , H01M4/622 , H01M2004/027 , H01M2300/0025 , H01M4/0404 , H01M4/405 , H01M4/587 , H01M4/661
摘要： A negative electrode for use in a secondary battery is disclosed, comprising milled carbon fibers derived from mesophase pitch wherein the milled carbon fibers each has a fiber cut surface and a fiber axis intersecting with each other at cross angles, the smaller one thereof being at least 65.degree. on the average. This negative electrode does not suffer from property deterioration, irrespective of multiple repetitions of charge and discharge, from which a nonaqueous-electrolyte-loaded lithic secondary battery having excellent cycle characteristics can be fabricated.
摘要翻译： 公开了一种用于二次电池的负极，包括衍生自中间相沥青的磨碎碳纤维，其中研磨碳纤维各自具有纤维切割面和纤维轴线交叉的交叉角，其中较小的一个至少是 平均65度。 不管充放电多次重复，可以制造出具有优异的循环特性的非水电解质负载的锂二次电池，不会损害该负极的性能劣化。
-
6.发明授权
公开(公告)号：US5698341A
公开(公告)日：1997-12-16
申请号：US695848
申请日：1996-08-09
申请人： Toshio Tamaki , Yoshiyuki Nishimura
发明人： Toshio Tamaki , Yoshiyuki Nishimura
IPC分类号： C01B31/04 , H01M4/133 , H01M4/1393 , H01M4/58 , H01M4/583 , H01M10/052 , H01M10/36 , H01M4/62
CPC分类号： H01M4/583 , C01B31/04 , H01M4/133 , H01M4/1393 , C01P2002/60 , C01P2002/72 , C01P2002/74 , C01P2006/80 , H01M10/052
摘要： A carbon material for use in a lithium secondary battery, which is obtained by graphitization conducted in the presence of a boric compound so as to contain boron in an amount ranging from 1,000 ppm to 30,000 ppm and which, when subjected to X-ray diffractometry, exhibits an interplanar spacing of 002 surface (d.sub.002) of not greater than 0.338 nm, a crystallite size along c-axis (Lc) of at least 35 nm, a crystallite size along a-axis (La) of at least 50 nm and a ratio of diffraction peak (101) to diffraction peak (100), designated as P.sub.101 /P.sub.100, of at least 1.0; a negative electrode and a lithium secondary battery each produced by using the above carbon material; and a process for producing the carbon material. This carbon material exhibits large charge and discharge capacities, so that it can provide a negative electrode for use in a lithium secondary battery which is excellent in charge and discharge cycle characteristics.
摘要翻译： 一种用于锂二次电池的碳材料，其通过在硼化合物的存在下进行石墨化而获得，以便含有量为1,000ppm至30,000ppm的硼，并且当进行X射线衍射时， 表现出不大于0.338nm的002表面（d002）的晶面间距，沿c轴（Lc）至少35nm的微晶尺寸，沿a轴（La）至少50nm的微晶尺寸和 衍射峰（101）与衍射峰（100）的比值，指定为P101 / P100，为至少1.0; 通过使用上述碳材料制造的负极和锂二次电池; 以及碳材料的制造方法。 该碳材料具有大的充放电容量，因此能够提供充放电循环特性优异的锂二次电池用负极。
-
公开(公告)号：US5945072A
公开(公告)日：1999-08-31
申请号：US916397
申请日：1997-08-22
CPC分类号： C01B13/11 , C01B2201/12 , C01B2201/32
摘要： An ozonizer in which a pair of plate-like electrode plates are arranged opposite to each other so as to form a discharge space therebetween, and ceramic dielectric layers are arranged on the surface on the side of the discharge space of said electrode plates, wherein a plate-like anode 4 is arranged between the dielectrics 31 and 32, extreme ends 41 and 42 having sharp extreme ends of a number of protrusions are formed on both surfaces of the anode 4, the anode 4 is arranged between the dielectrics 41 and 42 in a state where the extreme ends 41 and 42 are in contact with the surfaces of the dielectrics 31 and 32 on both sides, the anode 4 is formed with a number of through-holes extending through both surfaces, and the anode being formed of expanded metal.
摘要翻译： 一种臭氧化器，其中一对板状电极板彼此相对地布置以在其间形成放电空间，并且陶瓷电介质层布置在所述电极板的放电空间侧的表面上，其中， 板状阳极4配置在电介质31,32之间，在阳极4的两面形成具有多个突起的尖端的末端41和42，阳极4配置在电介质41和42之间 末端41和42与两侧的电介质31,32的表面接触的状态，阳极4形成有多个通过两个表面延伸的通孔，阳极由多孔金属 。
-
8.发明申请Method for producing a nitride semiconductor crystal layer, nitride semiconductor crystal layer and substrate for producing the same 审中-公开氮化物半导体晶体层的制造方法，氮化物半导体晶体层及其制造用基板公开(公告)号：US20050245054A1
公开(公告)日：2005-11-03
申请号：US10974698
申请日：2004-10-28
CPC分类号： H01L21/0254 , H01L21/02381 , H01L21/02458 , H01L21/0262 , H01L21/02642 , H01L21/02647
摘要： A mask with rectangular openings is formed on a large-scaled silicon substrate, and an AlN micro crystalline layer is formed in a thickness of 200 nm or over through the mask on the silicon substrate by means of selective and lateral growth. Then, a nitride semiconductor crystal layer with a composition of InxGayAlzN (0≦x, y, z≦1, x+y+z=1) is formed on the AlN micro crystalline layer.
摘要翻译： 在大型硅衬底上形成具有矩形开口的掩模，并且通过选择性和横向生长通过硅衬底上的掩模在200nm或更大的厚度上形成AlN微晶层。 然后，在AlN微晶层上形成具有In x Ga y Al z N（0 <= x，y，z <= 1，x + y + z = 1）组成的氮化物半导体晶体层。
-
公开(公告)号：US5283113A
公开(公告)日：1994-02-01
申请号：US961879
申请日：1992-10-16
CPC分类号： D04H1/4382 , D04H1/4242 , Y10T428/24124 , Y10T428/30 , Y10T442/50
摘要： There is disclosed a process for continuously producing a pitch-based carbon fiber felt which comprises the steps of spinning a pitch by melt blow spinning system; accumulating the spun fibers as a pitch fiber web composed of the aggregate of short fibers; continuously cross lapping the web; subsequently stabilizing the cross lapped web; carbonizing and/or activating the stabilized web; and then felting the resultant web. The above-mentioned process is capable of efficiently producing a pitch-based carbon fiber felt having uniform unit weight and excellent physical properties and well suited for use in high-performance thermal insulator, cushioning thermal insulator, filter media and adsorbent for water purification and solvent recovery, etc.
摘要翻译： 公开了一种用于连续生产沥青类碳纤维毡的方法，该方法包括以下步骤：通过熔喷法纺丝沥青; 将纺丝纤维作为由短纤维集合体构成的沥青纤维网聚集; 不断交叉研究网络; 随后稳定交叉搭接的网; 碳化和/或激活稳定的纤维网; 然后使所得到的网络发生毛刺。 上述方法能够有效地生产具有均匀单位重量和优异物理性能的沥青基碳纤维毡，并且非常适合用于高性能绝热材料，缓冲隔热材料，过滤介质和用于水净化和溶剂的吸附剂 恢复等
-
10.发明授权公开(公告)号：US08372373B2
公开(公告)日：2013-02-12
申请号：US13266068
申请日：2010-10-22
CPC分类号： H01M10/0525 , C01B32/20 , C01B32/215 , H01M4/133 , H01M4/364 , H01M4/587 , H01M2004/021 , Y02T10/7011 , Y10T428/2918 , Y10T428/2982
摘要： Provided are a graphite material suitable as an electrode material for nonaqueous electrolyte secondary batteries, a carbonaceous material for battery electrodes, and secondary batteries which exhibit excellent charge-discharge cycle characteristics and excellent severe-current-load characteristics. A graphite material which has specific sizes of optically anisotropic and isotropic structures, a specific content ratio between both structures, and various orientation of crystallization; and a carbonaceous material for battery electrodes which is made using the graphite material and which exhibits a large discharge capacity and a small irreversible capacity with the severe-current-load characteristics and cycle characteristics being kept at high levels.
摘要翻译： 提供适合作为非水电解质二次电池的电极材料，电池用电极用碳质材料和二次电池的石墨材料，其具有优异的充放电循环特性和优异的强电流负载特性。 具有特定尺寸的光学各向异性和各向同性结构的石墨材料，两种结构之间的特定含量比和结晶的各种取向; 以及使用石墨材料制成并且具有大的放电容量和小的不可逆容量的电池电极用碳质材料，其严重的电流 - 负载特性和循环特性被保持在高水平。
-
-
-
-
-
-
-
-
-
搜索结果
26 条记录 (耗时 0.022 秒)
