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。