公开(公告)号：US06755911B2

公开(公告)日：2004-06-29

申请号：US10136531

申请日：2002-05-02

申请人： Masatoshi Yamaji ,  Hisanori Nishi ,  Yuji Tomita ,  Shingo Bito ,  Toshiyuki Miyatani

发明人： Masatoshi Yamaji ,  Hisanori Nishi ,  Yuji Tomita ,  Shingo Bito ,  Toshiyuki Miyatani

IPC分类号： C30R3500

CPC分类号： C30B15/10 ,  C30B35/002 ,  Y10S117/90 ,  Y10T117/10 ,  Y10T117/1052 ,  Y10T428/13

摘要： A crucible 1 made of a C/C composite material for use in single crystal pulling, the crucible 1 having a lateral cylindrical portion 11 and a bottom portion 12 integrally formed as multiple layers wound by a filament winding method, in which the first layer 2 as the innermost crucible layer, among the multiple layers, is wound such that carbon fibers form tracks passing the polar point O at the bottom 12, the second layer 3 wound on the outer surface of the first layer 2 is wound along tracks to form a first outer circular bottom 8 that extends outwardly from about a middle part of a raised portion 6 where the carbon fibers of the first layer 2 are localized to the polar point O, and the third layer 4 and the succeeding layers wound on the outer surface of the second layer 3 are wound respectively along tracks to form outer circular bottoms that extend stepwise outwardly from about the middle parts of the outer surfaces of layers situated inside the respective layers, and the top for the raised portion of the first layer and the top for each of the outer circular bottoms at the bottom of the carbon fibers wound around as the multiple layers are at an substantially identical height, detachment and deformation of carbon fibers during use being suppressed by reducing the machining for the bottom of the crucible after molding.

摘要翻译： 由用于单晶拉制的C / C复合材料制成的坩埚1，坩埚1具有一个横向圆筒形部分11和一个整体形成为通过丝缠绕方法缠绕的多层的底部12，其中第一层2 作为最内层的坩埚层，在多层中被卷绕，使得碳纤维形成通过底部12处的极点O的轨道，缠绕在第一层2的外表面上的第二层3沿轨道缠绕形成 第一外圆底8从第一层2的碳纤维定位于极点O的凸起部分6的中部附近向外延伸，第三层4和后层缠绕在 第二层3分别沿着轨道缠绕以形成从位于各层内侧的层的外表面的中部附近向外延伸的外圆底，而顶部为t 在多个层处于基本相同的高度时，将碳纤维底部的每个外部圆形底部的每个外圆底部分抬高，使用过程中碳纤维的脱离和变形被减少 成型后对坩埚底部进行加工。

公开(公告)号：US20090280413A1

公开(公告)日：2009-11-12

申请号：US12439311

申请日：2007-07-06

申请人： Naoto Ohta ,  Kazuhito Hoshi ,  Shingo Bito ,  Akio Yamanaka ,  Tomoyuki Okuni

发明人： Naoto Ohta ,  Kazuhito Hoshi ,  Shingo Bito ,  Akio Yamanaka ,  Tomoyuki Okuni

IPC分类号： H01M4/58

CPC分类号： H01M4/133 ,  C01B32/20 ,  H01M4/1393 ,  H01M4/583 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

摘要： There is obtained a carbon material for lithium-ion secondary battery negative electrode, a low-crystalline carbon impregnated carbon material for lithium-ion secondary battery negative electrode, a negative electrode plate, and a lithium-ion secondary battery, each of which realizes a first charge/discharge cycle with less gas generation and provides a rapid charge/discharge. The carbon material is obtained by: blending and kneading a carbonaceous aggregate with a binder to form a composition; press molding the composition into an article; carbonizing the press molded article; graphitizing the article to obtain an artificial graphite block; milling the block; and carrying out particle size control. The carbon material has characteristics of: (1) R-value=(I1360/I1580)≧0.2, where R-value is defined by the ratio of D band to G band in Raman spectrum using Nd:YAG laser light of 532 nm wavelength; and (2) d(002)≧0.336 nm, and Lc(002)≦50 nm, where d(002) and Lc(002) are crystallographic parameters calculated by Gakushin-method. The carbon material is used for the negative electrode plate of a lithium-ion secondary battery, and used in the lithium-ion secondary battery having therein the negative electrode plate.

摘要翻译： 得到锂离子二次电池用负极用碳材料，锂离子二次电池用负极用低碳碳浸渍碳材料，负极板，锂离子二次电池，实现了 第一次充放电循环，气体产生较少，并提供快速充放电。 碳材料通过以下方式获得：将碳质骨料与粘合剂混合并捏合以形成组合物; 将组合物压制成制品; 将压制成型品碳化; 石墨化制品以获得人造石墨块; 铣块; 并进行粒度控制。 碳材料具有以下特征：（1）R值=（I1360 / I1580）> = 0.2，其中R值由使用Nd：YAG激光532nm的拉曼光谱中的D带与G带的比率定义 波长; 和（2）d（002）> = 0.336nm，Lc（002）<= 50nm，其中d（002）和Lc（002）是通过Gakushin方法计算的晶体参数。 碳材料用于锂离子二次电池的负极板，并用于其中具有负极板的锂离子二次电池中。